CI/SfB. P364 July Technical Handbook

Transcription

1 St r u c tura l P ro d u c ts CI/SfB (28) Hh2 P364 July 2011 Technical Handbook

2 Kingspan Toolkit Software The Toolkit series has become the leading cold rolled steel and floor decking design software in the industry and is now used by structural engineers in over 1000 practices in the UK. The structural design software has been used industry wide to save valuable design time. Download the latest version from our website: or telephone our Marketing Department on +44 (0) for a CD. The contents of this Technical Handbook and CD are meant as a general introduction to Kingspan Structural Products and any purchaser, specifier or user retains the entire responsibility for satisfying himself, independently of anything herein, as to the suitability or fitness for purpose of any Kingspan product or system.

3 Multideck 50-V2 8 Specification and Design 9 Load Tables Fire Performance Dramix Load Tables Sound Attenuation 22 Multideck 60-V2 24 Specification and Design 25 Load Tables Fire Performance Dramix Load Tables Sound Attenuation 41 Multideck 80-V2 42 Specification and Design 43 Load Tables Fire Performance Dramix Load Tables Sound Attenuation 54 Multideck Specification and Design 57 Load Tables Fire Performance Sound Attenuation 65 Construction Details 66 Multideck 50-V Multideck 60-V2 and 80-V Multideck Sitework 84 Multideck Weights 85 Pack ID Primary Fixings 88 Shear Studs Formation of Holes 93 Temporary Supports Concrete 98 Estimating Concrete Volumes 99 Reinforcement 100 Dramix Steel Fibres Estimating and Ordering 104 Accessories and Service 107 Accessories 107 Suspension Systems Uni-Wedge Universal Clamp Order Forms References 113

4 Kingspan Structural Products The Company Kingspan Structural Products is one of Britain s leading designers and manufacturers of structural steel components for the construction industry. Based in Sherburn, North Yorkshire Kingspan operates one of the largest and most advanced production complexes in Europe, manufacturing over 50,000 tonnes of steel products each year. In five decades of trading the company has become established as a market leader renowned for quality products and innovative design. Kingspan Structural Products manufacturing facility Kingspan Structural Products Multideck Floor System High performance, profiled, galvanised steel floor decking for use in the construction of composite floor slabs. The profile may also be used as a permanent shuttering. Multibeam Purlin System A range of purlin sections designed to suit all types of modern roof construction with bay sizes up to 15 metres. Multibeam Cladding Rail System A range of cladding rails designed specifically to support metal clad walls in horizontal or vertical applications on all kinds of main supporting structures. Multichannel Steel Sections A range of pre-engineered, structural channel sections designed to complement the Multibeam purlin and rail systems. Multichannel is an ideal solution for horizontally laid cladding and is particularly suitable for mezzanine floors, volumetric units. Multichannel can be an effective substitute for conventional hot rolled sections and timber. Unique pre-engineered end connections reduce components and simplify detailing. Commitment It is our commitment and professional approach that has enabled the company to establish its outstanding reputation for service, quality and to maintain its lead in a highly competitive field. Further information on these products is available in technical handbook, reference P128. Quality Assurance Quality assurance is a fundamental feature of the Kingspan Structural Products operating policy. From initial material testing for yield strength and thickness through to delivery on site all aspects of quality and service are monitored ensuring compliance with the requirements of BS EN ISO 9001:2008 (Quality management systems. Requirements). CE Marking Kingspan Structural Products have been accredited at the highest execution class EXC4, allowing Multideck to be used on all types of construction. The accreditation was carried out by the Steel Construction Certificate Scheme (SCCS). Gold Standard Kingspan Structural Products have been awarded the Gold Standard under the Steel Construction Sustainability Charter (SCSC). The Gold Standard was awarded after a successful audit under SCSC rules. This included demonstrating the implementation of a range of management systems, including OHSAS 18001, BS EN ISO and BS EN ISO

5 Sustainability Reuse Steel does not lose its strength or stiffness over time so remains a viable product for reuse. Assembly joints between components can be easily dismantled at any time to facilitate reuse. Sections can be recut to length and reholed to suit a revised use. Recycling Steel is one of the world s most recycled materials with over 40% of new steel made from recycled steel. Kingspan s suppliers encourage, promote and assist in the return of steel for recycling. Certification Kingspan s products are manufactured from the highest quality materials to rigorous quality control standards, approved to BS EN ISO 9001:2008 (Quality management systems. Requirements). Kingspan manufacturing plants are BS EN ISO 14001: 2004 (Environmental management systems. Requirements with guidance for use) and BS OHSAS 18001: 2007 (Occupational health and safety management systems. Requirements) accredited. This simple coherent business management system enables the organisation to successfully achieve its purpose and mission to ensure that quality; safety and the environment are considered in all aspects of the business process. Further information on these certifications can be found on our website Customer Service Experience From concept and design to manufacture and site installation, Kingspan Structural Products has an unmatched degree of experience with over four decades of experience and technical expertise in all aspects of steel construction. Kingspan remain focused on servicing the ever changing need of the construction industry. Technical Excellence At Kingspan Structural Products we are committed to advancing technology within the construction industry. Working in conjunction with the world s leading experts, continually refining and testing new and existing products, while enhancing our reputation for technical excellence and the establishment of higher standards in the industry. Specialist Team Kingspan offer a comprehensive advisory service to customers, specifiers and contractors on all aspects of specification and use of our product range. Our specialist team of design engineers is available to answer technical queries regarding the use of our products in any application. Our internal sales staff and customer services department provide a friendly and efficient service from initial enquiry through to site delivery and after sales. Area Sales Managers Personal contact is important. Our specially trained regionally based Sales Managers are on hand to discuss your project personally and advise on the application and use of Kingspan structural products. Our Area Sales Managers are also trained to install and update our time saving Toolkit design software. Toolkit is available to all specifiers and users of our product range, as part of our comprehensive service package. 5

6 Kingspan Multideck Profiled Steel Floordeck Welcome to the Kingspan Multideck floordeck handbook. Multideck profiles are high performance profiled galvanised steel decks manufactured in high yield steel for use in the construction of composite floor slabs. This publication contains complete technical information on the following products manufactured by Kingspan Structural Products. Multideck 50-V2 For minimum slab depth and robust acoustics Multideck 60-V2 Our most popular deck suitable for most applications Please see Multideck 50-V3 Brochure for updated 50-V2 information 50mm Dovetail rib profile, maximising deck bond to concrete Minimum slab depth of 100mm Spans up to 4.0m unpropped Gauge range 0.9mm through 1.2mm for economic solutions Shear keys on flange and webs of ribs gives class leading load capacity 1 hour fire performance with 100mm slab depth Fire performance up to 4 hours Acoustic robust solution Tested Acoustic Performance Report available from the Kingspan Technical Department 60mm trapezoidal profile giving maximum strength Spans up to 4.5m unpropped Gauge range 0.9mm through 1.2mm for economic solutions Efficient concrete cross section using up to 20% less concrete than other decks 1 hour fire performance with 130mm slab depth Fire performance up to 4 hours 1.0m cover width for rapid lay of deck on site Acoustic robust solution Optimised for composite beam design 6

7 Multideck 80-V2 For greater spans and concrete savings Multideck 146 For long spans up to 6 metres 80mm trapezoidal profile giving maximum strength Spans up to 5.0m unpropped Gauge range 1.0mm through 1.2mm for economic solutions Efficient concrete cross section maximising performance 1 hour fire performance with 140mm slab depth Fire performance up to 4 hours Acoustic robust solution 146mm trapezoidal profile giving maximum strength Spans up to 6.0m unpropped Gauge range 1.2mm and 1.5mm for economic solutions Efficient concrete cross section using up to 31% less concrete than other decks 1 hour fire performance with 215mm slab depth Fire performance up to 4 hours Acoustic robust solution Spans up to 6 metres without the need for temporary props and uses minimal concrete 7

8 Multideck 50-V2 Contents Specification and Design 9 Load Tables 11 Fire Performance 17 Dramix Load Tables 20 Multideck 50-V2 is a dovetail profile deck with a depth of 50mm providing spans up to 4m unpropped. Key benefits include: Greater Design Efficiency The larger range of Multideck gauge thicknesses allow much closer matching of design requirements and deck performance. Quicker Installation No temporary supports required under most conditions. A wide range of accessories allows for easy installation of ceilings and services. Technical Support Kingspan Toolkit software includes comprehensive composite floor design software which allows the user to easily select the right Multideck solution. The design software is available for download from the web site The Multideck design department provides a comprehensive engineering and advisory service to specifiers and end users on the use of the Multideck range of composite decks. Please see Multideck 50-V3 Brochure for updated 50-V2 information Two Towers, Arnhem, Netherlands. Photo Courtesy of MSW (UK) Ltd. 8

9 Multideck 50-V2 Specification and Design Multideck 50 Profile and Dimensions (mm) 600mm nominal 150mm 40mm 20mm 51mm gauge 5mm 17mm Gauge = 0.9mm, 1.0mm, 1.2mm Section Properties per Metre Width 15mm Maximum length: 12 metres Height to Second Ultimate Moment Normal Self Weight Neutral Axis Moment Steel Capacity (knm/m) Thickness of Area Area (mm) (kg/m 2 ) (kn/m 2 ) Sagging (cm 4 /m) (mm 2 /m) Sagging Hogging mm mm mm Material Specification 350N/mm 2 Steel Steel strip for Multideck 50-V2 complies with BS EN and BS EN 10326: 2004 with a guaranteed minimum yield strength of 350N/mm 2 and a minimum total coating mass (including both sides) of 275g/m 2. Concrete Volumes and Specification Load / span tables are based on Grade C25/30 concrete, having a design strength of 30N/mm 2. Solutions using other concrete strengths are possible with the Multideck design software. Density of normal weight concrete: 2400kg/m 3 at wet stage. Density of lightweight concrete: 1900kg/m 3 at wet stage. Rake Cutting Pre-delivery cutting of sections is available. Please contact our Sales Department for details. Volume and Weight of Composite Slabs Reinforcement Mesh or bar reinforcement of the slab to control cracking in the concrete at all intermediate supports is required in BS 5950: Part Steel reinforcement for crack control in the concrete or fire engineering purposes should be in accordance with British Standards: Hot rolled bars BS 4449: 1997; Mesh reinforcement BS 4483: A reinforcement solution using Dramix Steel Fibres from Bekaert is available, see pages 101 to 103 for details. Embossments The unique patented combination of embossments on each face of the dovetail provide mechanical connection to enhance the bond between the harden concrete and the deck. References Please see Multideck 50-V3 Brochure for updated 50-V2 information Engineers are advised to consult the Steel Construction Institute / The Metal Cladding and Roofing Manufacturers Association (SCI / MCRMA) Technical Paper 13 Composite Slabs and Beams using Steel Decking: Best Practice for Design and Construction. Weight (kn/m 2 ) Slab Concrete Normal Weight Lightweight Depth Volume Concrete Concrete (mm) (m 3 /m 2 ) Wet Dry Wet Dry Notes: 1 Important concrete volumes do not take into account deflection. 2 Excludes weight of steel decking and relates only to weight of concrete. 3 Concrete volumes are based upon a calculated minimum value (nominal slab depth). Account should be taken of deck and supporting structure deflections. 9

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11 Multideck 50-V2 Load Tables Multideck 50 When using load tables for Multideck 50-V2 please take into consideration the following notes: 1 The table shows the maximum span in meters of the Multideck product for the applied loads and slab depths shown. Values are shown for each gauge where the deck is single span or double spans, plus values for propped spans during construction. 2 Construction stage span capacity are generally noted under the 4kN/m 2 load and are shaded. For confirmation of maximum un-propped spans see page The span values are based on the use of a minimum 100mm bearing support. Where the bearing exceeds 100mm the span capacity can be increased. See example below. 4 Deck must lie flat on all supports beams. Point only contact will affect the design loading. 5 The self weight of the slab has been taken in to account in the table and should not be included in the applied loading. 6 All tabulated span capacities include applied construction stage load of 1.5kN/m 2 for spans of 3.0m or larger. For spans less than 3.0m the construction load is 4.5/span(m) kn/m 2. 7 The composite slab should meet the requirements of BS5950 Part with regard to their composite behaviour under normal loading. 8 The concrete grade is a minimum of C25/30 with a minimum ultimate strength is of 30N/mm 2. 9 Minimum reinforcement mesh sizes shown meet or exceed 0.1% gross cross sectional area of the concrete at the supports. Minimum reinforcement should be increased where:- a) The slab is propped during construction. b) It is required to control the size of cracking in the concrete i.e. where a brittle finishes is applied to the slab. c) There are moving loads. Mesh reinforcement should be placed near the upper edge of the concrete slab in a zone of 15mm to 40mm from the top surface. Concrete cover to reinforcement should be increased where slab exposure dictates. 10 Where in the table the span value is shown in red this shows the maximum permissible span where there is a minimum of one stud per trough 11 Total applied load referred to in the table is a working load derived from the sum of the loads supported by the composite slab (live load, finishes, ceilings, services, partitions). Loads shown are based on Ultimate capacity / 1.6. The slab self weight has already been taken in to account do not include in applied loads. 12 Deflection under construction loading (wet concrete etc) has been limited to that stipulated in BS5950 Part At the composite stage the suggested maximum ratio of slab span to slab depth are 35 for NWC and 30 for LWC to control deflection. 13 For the propped during construction cases the temporary supports should remain in place until the concrete has achieved 75% of it 28 day cube strength often available after 7 days. 14 Where more than one prop is provided they should be equally spaced across the span of the Multideck. 15 Where * appears the addition of props gives no further spanning benefit in these cases. Definition of Span (Construction Stage) When Using Kingspan Load Tables 100mm minimum support c/c Support widths greater than 100mm? The span capacities shown on the following pages can be increased by the difference between the actual support widths and 100mm. The deck span (m) used in the table is based on the (support c/c support bearing) + the deck depth. All values in metres. Example Support widths 140mm and 200mm. Span values can be increased by ( )/2 100 = 70mm. MD50-V2 1.2mm double span deck (no props). 150mm thick slab normal weight concrete. Construction stage span from page 13, 4.0kN/m 2 load column = 3420mm. With support widths of 140 and 200 the increased span capacity is = 3490mm. 100mm minimum Please see Multideck 50-V3 Brochure for updated 50-V2 information 11

12 Multideck 50-V2 Load Tables Normal Weight Concrete Unpropped Load / Span Table (Steel 350N/mm 2 ) Gauge = 0.9mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Propped Load / Span Table (Steel 350N/mm 2 ) Span (m)* 100 A A A A A A A A A A A A A A A A A A A A Gauge = 0.9mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* 100 A A A A A A A A A A A A A A Notes: Total applied load referred to in the above table is a working load based on combinations of live loads, finishes, ceilings, services and partitions (excluding slab self weight). Figures in red are maximum permissible spans in situations where there is one stud per trough. Permanent Support Temporary Support *See diagram page 11. Please see Multideck 50-V3 Brochure for updated 50-V2 information 12

13 Multideck 50-V2 Load Tables Multideck 50 Normal Weight Concrete Unpropped Load / Span Table (Steel 350N/mm 2 ) Gauge = 1.0mm Gauge = 1.2mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Propped Load / Span Table (Steel 350N/mm 2 ) Span (m)* 100 A A , A A A A A A A A A A A A A A A A A A Gauge = 1.0mm Gauge = 1.2mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Span (m)* 100 A A A A A A A A A A A A A A Please see Multideck 50-V3 Brochure for updated 50-V2 information Notes: Total applied load referred to in the above table is a working load based on combinations of live loads, finishes, ceilings, services and partitions (excluding slab self weight). Figures in red are maximum permissible spans in situations where there is one stud per trough. Permanent Support Temporary Support *See diagram page

14 Multideck 50-V2 Load Tables Lightweight Concrete Unpropped Load / Span Table (Steel 350N/mm 2 ) Gauge = 0.9mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Propped Load / Span Table (Steel 350N/mm 2 ) Span (m)* 100 A A A A A A A A A A A A A A A A A A A A Gauge = 0.9mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* 100 A A A A A A A A A A A A A A Please see Multideck 50-V3 Brochure for updated 50-V2 information Notes: Total applied load referred to in the above table is a working load based on combinations of live loads, finishes, ceilings, services and partitions (excluding slab self weight). Figures in red are maximum permissible spans in situations where there is one stud per trough. Permanent Support Temporary Support *See diagram page

15 Multideck 50-V2 Load Tables Multideck 50 Lightweight Concrete Unpropped Load / Span Table (Steel 350N/mm 2 ) Gauge = 1.0mm Gauge = 1.2mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Propped Load / Span Table (Steel 350N/mm 2 ) Span (m)* 100 A A A A A A A A A A A A A A A A A A A A Gauge = 1.0mm Gauge = 1.2mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Span (m)* 100 A A A A A A A A A A A A A A Please see Multideck 50-V3 Brochure for updated 50-V2 information Notes: Total applied load referred to in the above table is a working load based on combinations of live loads, finishes, ceilings, services and partitions (excluding slab self weight). Figures in red are maximum permissible spans in situations where there is one stud per trough. Permanent Support Temporary Support *See diagram page

16 Kingspan Multideck was used in the construction of the Meadowhall Extension in Sheffield, UK. Photo Courtesy of MSW (UK) Ltd. 16

17 Multideck 50-V2 Fire Performance Mesh Multideck 50 1 The fire resistance tables for Multideck 50-V2 on the following pages are based upon fire test data from full scale tests performed at the Warrington Fire Research Centre UK, May All stated slab depths comply with the minimum fire insulation criteria of BS 476: Part The composite slab is assumed to be continuous over one or more intermediate supports. i.e. minimum double span. 4 The fire resistance load tables are for continuous spans only with no propping. For propped and single span conditions use the Kingspan Toolkit Software or contact Kingspan Technical Services. 5 Minimum laps should be 300mm for A142 mesh and 400mm for A193 and A252 mesh. 6 The mesh should be placed between 15 and 40mm from the upper surface of the slab (this range caters for lap areas). 7 The tables are based upon Grade 30 concrete, reinforcement having a yield strength of 460N/mm 2. 8 The tables must be read in conjunction with load / span tables for Multideck 50-V2 to verify the structural integrity of the composite slab. 9 The values in all the tables are relevant to unpropped construction. 10 The tables take into account the reduced partial factor of 0.8 as permitted in BS 5950: Part 8 for non-permanent imposed loads. The tables are presented in terms of total specified imposed load (non-permanent and permanent). It is assumed that the permanent imposed loads for partitions, finishes, ceilings and services are equivalent to 1.7kN/m 2 in all cases. The tables are therefore appropriate for office type applications. For other applications where the imposed loads are almost entirely permanent the total load should be adjusted accordingly before reading from the tables, eg: 150mm normal weight concrete plantroom slab and A142 mesh. 7.5kN/m 2 live load. 1.2kN/m 2 50mm screed finish 0.5kn/m 2 ceilings and services. 1 hour fire rating. Multideck 50-V2 profile Total applied load = /0.8 = kN/m 2. From table overleaf maximum span = 3.60m. 11 The * denotes that the mesh provided, although satisfying the fire resistance requirement, does not comply with the minimum anti-crack reinforcement requirement of BS 5950: Part 4. Refer to standard load / span tables for minimum mesh requirements. 12 For loan / span conditions beyond the scope of these tables the Fire Engineering Method as detailed in the SCI Publication 056 should be adopted or use Kingspan Toolkit Software. Please contact our Technical Services Department for advice. See following pages for Multideck 50-V2 Fire Resistance Tables. 13 These tables apply to all gauges 0.9mm and above. Please see Multideck 50-V3 Brochure for updated 50-V2 information Note: For load / span conditions beyond the scope of these tables, the Kingspan Multideck design software should be used to check for a solution. Toolkit Design Software provides an accurate and detailed analysis and Kingspan encourages its use for all design checks. 17

18 Multideck 50-V2 Fire Resistance Load Tables Normal Weight Concrete Unpropped Construction Fire rating: 1.0 hour Fire rating: 1.5 hours Slab Min Depth Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Size Span (m) Span (m) 100 A A A A A A A A A A A A A A A A A A A A A A A A A A A Normal Weight Concrete Unpropped Construction Fire rating: 2.0 hours Slab Min Depth Mesh Total Applied Load (kn/m 2 ) (mm) Size Span (m) Please see Multideck 50-V3 Brochure for updated 50-V2 information 100 A A A A A A A A A A A A A A A A A A A A A A A A A A A Note: These values are for unpropped spans only. For cases where the deck is propped please use the Kingspan Toolkit Software.

19 Multideck 50-V2 Fire Resistance Multideck 50 Load Tables Lightweight Concrete Unpropped Construction Fire rating: 1.0 hour Fire rating: 1.5 hours Slab Min Depth Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Size Span (m) Span (m) 100 A A A A A A A A A A , A A A A A A A A A A A A A A A A A Lightweight Concrete Unpropped Construction Fire rating: 2.0 hours Slab Min Depth Mesh Total Applied Load (kn/m 2 ) (mm) Size Span (m) Please see Multideck 50-V3 Brochure for updated 50-V2 information 100 A A A A A A A A A A A A A A A A A A A A A A A A A A A Note: These values are for unpropped spans only. For cases where the deck is propped please use the Kingspan Toolkit Software. 19

20 Multideck 50-V2 Fire Resistance Dramix Reinforced Concrete 20kg/m 3 RC-80/60-BN Load Tables (see pages ) 1 Hour Fire Rating Normal Weight Concrete Gauge 0.9mm Gauge 1.0mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m)* Span (m)* Hour Fire Rating Normal Weight Concrete Gauge 0.9mm Gauge 1.0mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m)* Span (m)* Please see Multideck 50-V3 Brochure for updated 50-V2 information 2.0 Hour Fire Rating Normal Weight Concrete Gauge 0.9mm Gauge 1.0mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m)* Span (m)* Notes: These tables are not applicable to slabs where the deck is supplied in single span lengths (use Multideck Design software to determine suitable bottom bar requirements). These values are for unpropped spans only. For cases where the deck is propped please use the Kingspan Toolkit Software. 20

21 Multideck 50-V2 Fire Resistance Dramix Reinforced Concrete 20kg/m 3 RC-80/60-BN Load Tables (see pages ) 1 Hour Fire Rating Normal Weight Concrete Multideck 50 Gauge 1.2mm Slab Depth Total Applied Load (kn/m 2 ) (mm) Span (m) Hour Fire Rating Normal Weight Concrete Gauge 1.2mm Slab Depth Total Applied Load (kn/m 2 ) (mm) Span (m) Please see Multideck 50-V3 Brochure for updated 50-V2 information 2.0 Hour Fire Rating Normal Weight Concrete Gauge 1.2mm Slab Depth Total Applied Load (kn/m 2 ) (mm) Span (m) Notes: These tables are not applicable to slabs where the deck is supplied in single span lengths (use Multideck Design software to determine suitable bottom bar requirements). These values are for unpropped spans only. For cases where the deck is propped please use the Kingspan Toolkit Software. 21

22 Multideck 50-V2 Sound Attenuation Kingspan Structural Products have undertaken extensive testing on the acoustic performance of the Multideck range of composite steel deck slabs The testing was carried out on behalf of Kingspan Structural Products by the Steel Construction Institute and resulted in a comprehensive report Acoustic Performance of Kingspan Composite Floors copies of which can be obtained from Kingspan Structural Products technical Department. Predicted Site Acoustic Performance of Floors with Multideck 50-V2 Predicted acoustic performance DnT,w + Ctr (db) For Airborne Sound Description of floor Slab Slab on deck with Slab on deck with Slab on deck with Slab on deck with Slab on deck with depth no ceiling and ceiling and ceiling and ceiling and ceiling and (mm) no floor treatment no floor treatment platform floor (FFT4) battened floor (FFT3) isolated screed to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to 60 Predicted acoustic performance L nt,w (db) For Impact Sound Description of floor Slab Slab on deck with Slab on deck with Slab on deck with Slab on deck with Slab on deck with depth no ceiling and ceiling and ceiling and ceiling and ceiling and (mm) no floor treatment no floor treatment platform floor (FFT4) battened floor (FFT3) isolated screed Please see Multideck 50-V3 Brochure for updated 50-V2 information 120 to 76 to to to to to Note: The tables are based on a minimum concrete density of 2350kgs/m 3 and can be used with mesh or Dramix reinforcement. Lightweight concrete may lead to a reduction in acoustic performance of about 2 to 3 db on the values shown above. Values of DnT,w and Lnw are available from Kingspan Structural Technical Department. The junction details between the walls and floors must be appropriately detailed to ensure that flanking sound is minimised. The values in the table are based on the new (since 2003) measurement index DnT,w+Ctr for airborne sound. The Ctr term is a spectrum adaptation value which is generally negative and adjusts the index to take account of low frequency sounds that often cause problems in residential buildings. Thus the DnT,w +Ctr rating is lower than the DnT,w rating for the same construction. Pre-delivery rake cutting of sections is available. Please contact our Sales Department for details. 22

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24 Multideck 60-V2 The original and still the most popular deck in the market is a 60mm high, structurally efficient trapezoidal profile providing an excellent composite union between steel and concrete to maximise the load carrying and spanning up to 4.5m (no props). The efficient shape of the deck and resulting composite slab make an excellent option for composite beam design. Key benefits include: Contents Specification and Design 25 Load Tables 27 Concrete Volume Savings Due to its unique profile Multideck 60-V2 requires less concrete than other decks to achieve any given slab thickness. Multideck 60-V2 can save up to 20% concrete volume compared with typical re-entrant profiles. See graph below. Typical Concrete Volume Savings Using Multideck 60-V2 Fire Performance Dramix Load Tables 36 Cubic Metres % +26.7% +24.2% +22.1% 120mm slab 130mm slab 140mm slab 150mm slab Concrete Volume Required Per 1000m 2 Floor Area Multideck 60-V2 Typical 50mm re-entrant profile Note: The above volumes do not take into account deflection. Greater Design Efficiency The larger range of Multideck gauge thicknesses allow much closer matching of design requirements and deck performance. Kingspan Multideck 60-V2 can be used with Dramix Steel Fibre Reinforcement to eliminate mesh in slab design. Quicker Installation The Multideck range has a 1m cover width requiring fewer panels and sidelaps. No temporary supports are required under most conditions. A wide range of accessories allows for easy installation of ceilings and services. Technical Support Kingspan Toolkit software includes comprehensive composite floor design software which allows the user to easily select the right Multideck solution. The design software is available for download from the web site The Multideck design department provides a comprehensive engineering and advisory service to specifiers and end users on the use of the Multideck range of composite decks. 24

25 Multideck 60-V2 Specification and Design Profile and Dimensions (mm) 19mm 142mm 53mm nominal 59 59mm 5mm Gauge = 0.9, 1.0, 1.1 and 1.2mm 9mm 1000 cover width 332mm gauge 61mm 119mm 213mm 63mm 15mm Maximum length: 12 metres Multideck 60 Section Properties per Metre Width Height to Second Ultimate Moment Normal Self Weight Neutral Axis Moment Steel Capacity (knm/m) Thickness of Area Area (mm) (kg/m 2 ) (kn/m 2 ) Sagging (cm 4 /m) (mm 2 /m) Sagging Hogging mm mm mm mm Material Specification 350N/mm 2 Steel Steel strip for Multideck 60-V2 complies with BS EN and BS EN 10326:2004 with a guaranteed minimum yield strength of 350N/mm 2 and a minimum total coating mass (including both sides) of 275g/m 2. Concrete Volumes and Specification Load / span tables are based on Grade C25/30 concrete, having a design strength of 30N/mm 2. Solutions using other concrete strengths are possible with the Multideck design software. Density of normal weight concrete: 2400kg/m 3 at wet stage. Density of lightweight concrete: 1900kg/m 3 at wet stage. All concrete used with Multideck in the construction of composite slabs should comply with the recommendations in BS 8110: Rake Cutting Pre-delivery cutting of sections is available. Please contact our Sales Department for details. Reinforcement Reinforcement of the slab to prevent cracking at all intermediate supports is required in BS 5950: Part Steel reinforcement for anti-crack or fire engineering purposes in accordance with British Standards: Hot rolled bars BS 4449: 1997; Fabric reinforcement BS 4483: A reinforced solution using Dramix Steel Fibres from Bekaert is available, see pages 101 to 103 for details. Embossments Raised diagonal embossments in opposite directions on each face of the webs of the decking provide the mechanical connection between the steel and the hardened concrete. References Engineers are advised to consult SCI / MCRMA Technical Paper 13 Composite Slabs and Beams using Steel Decking: Best Practice for Design and Construction. Volume and Weight of Composite Slabs Weight (kn/m 2 ) Slab Concrete Normal Weight Lightweight Depth Volume Concrete Concrete (mm) (m 3 /m 2 ) Wet Dry Wet Dry Notes: Important concrete volumes do not take into account deflection. 2 Excludes weight of steel decking and relates only to weight of concrete. 3 Concrete volumes are based upon a calculated minimum value (nominal slab depth) Account should be taken of deck and supporting structure deflections

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27 Multideck 60-V2 Load Tables When using load tables for Multideck 60-V2 please take into consideration the following notes: 1 The table shows the maximum span in meters of the Multideck product for the applied loads and slab depths shown. Values are shown for each gauge where the deck is single span or double spans, plus values for propped spans during construction. 2 Construction stage span capacity are generally noted under the 4kN/m 2 load and are shaded. For confirmation of maximum un-propped spans see page The span values are based on the use of a minimum 100mm bearing support. Where the bearing exceeds 100mm the span capacity can be increased. See example below. 4 Deck must lie flat on all supports beams. Point only contact will affect the design loading. 5 The self weight of the slab has been taken in to account in the table and should not be included in the applied loading. 6 All tabulated span capacities include applied construction stage load of 1.5kN/m 2 for spans of 3.0m or larger. For spans less than 3.0m the construction load is 4.5/span(m) kn/m 2. 7 The composite slab should meet the requirements of BS5950 Part with regard to their composite behaviour under normal loading. 8 The concrete grade is a minimum of C25/30 with a minimum ultimate strength is of 30N/mm 2. 9 Minimum reinforcement mesh sizes shown meet or exceed 0.1% gross cross sectional area of the concrete at the supports. Minimum reinforcement should be increased where:- a) The slab is propped during construction. b) It is required to control the size of cracking in the concrete i.e. where a brittle finishes is applied to the slab. c) There are moving loads. Mesh reinforcement should be placed near the upper edge of the concrete slab in a zone of 15mm to 40mm from the top surface. Concrete cover to reinforcement should be increased where slab exposure dictates. 10 Where in the table the span value is shown in red this shows the maximum permissible span where there is a minimum of one stud per trough 11 Total applied load referred to in the table is a working load derived from the sum of the loads supported by the composite slab (live load, finishes, ceilings, services, partitions). Loads shown are based on Ultimate capacity / 1.6. The slab self weight has already been taken in to account do not include in applied loads. 12 Deflection under construction loading (wet concrete etc) has been limited to that stipulated in BS5950 Part At the composite stage the suggested maximum ratio of slab span to slab depth are 35 for NWC and 30 for LWC to control deflection. 13 For the propped during construction cases the temporary supports should remain in place until the concrete has achieved 75% of it 28 day cube strength often available after 7 days. 14 Where more than one prop is provided they should be equally spaced across the span of the Multideck. 15 Where * appears the addition of props gives no further spanning benefit in these cases. Definition of Span (Construction Stage) When Using Kingspan Load Tables 100mm minimum support c/c Support widths greater than 100mm? The span capacities shown on the following pages can be increased by the difference between the actual support widths and 100mm. The deck span (m) used in the table is based on the (Support c/c support bearing) + the deck depth. All values in metres. Example Support widths 140mm and 200mm. Span values can be increased by ( )/2 100 = 70mm. MD60-V2 1.2mm double span deck (no props). 150mm thick slab normal weight concrete. Construction stage span from page 27, 4.0kN/m 2 load column = 4000mm. With support widths of 140 and 200 the increased span capacity is = 4070mm. 100mm minimum Multideck 60 27

28 Multideck 60-V2 Load Tables Normal Weight Concrete Unpropped Load / Span Table (Steel 350N/mm 2 ) Gauge = 0.9mm Gauge = 1.0mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Span (m)* 120 A A A A A A A A A A A A A A A A Propped Load / Span Table (Steel 350N/mm 2 ) Gauge = 0.9mm Gauge = 1.0mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Span (m)* 120 A A A A A A A A A A Notes: Total applied load referred to in the above table is a working load based on combinations of live loads, finishes, ceilings, services and partitions (excluding slab self weight). Figures in red are maximum permissible spans in situations where there is one stud per trough. Permanent Support Temporary Support *See diagram on page

29 Multideck 60-V2 Load Tables Normal Weight Concrete Unpropped Load / Span Table (Steel 350N/mm 2 ) Gauge = 1.1mm Gauge = 1.2mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Span (m)* 120 A A A A A A A A A A A A A A A A Multideck 60 Propped Load / Span Table (Steel 350N/mm 2 ) Gauge = 1.1mm Gauge = 1.2mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Span (m)* 120 A A A A A A A A A A Notes: Total applied load referred to in the above table is a working load based on combinations of live loads, finishes, ceilings, services and partitions (excluding slab self weight). Figures in red are maximum permissible spans in situations where there is one stud per trough. Permanent Support Temporary Support *See diagram on page

30 Multideck 60-V2 Load Tables Lightweight Concrete Unpropped Load / Span Table (Steel 350N/mm 2 ) Gauge = 0.9mm Gauge = 1.0mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Span (m)* 120 A A A A A A A A A A A A A A A A Propped Load / Span Table (Steel 350N/mm 2 ) Gauge = 0.9mm Gauge = 1.0mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Span (m)* 120 A A A A A A A A A A Notes: Total applied load referred to in the above table is a working load based on combinations of live loads, finishes, ceilings, services and partitions (excluding slab self weight). Figures in red are maximum permissible spans in situations where there is one stud per trough. Permanent Support Temporary Support *See diagram on page

31 Multideck 60-V2 Load Tables Lightweight Concrete Unpropped Load / Span Table (Steel 350N/mm 2 ) Gauge = 1.1mm Gauge = 1.2mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Span (m)* 120 A A A A A A A A A A A A A A A A Multideck 60 Propped Load / Span Table (Steel 350N/mm 2 ) Gauge = 1.1mm Gauge = 1.2mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Span (m)* 120 A A A A A A A A A A Notes: Total applied load referred to in the above table is a working load based on combinations of live loads, finishes, ceilings, services and partitions (excluding slab self weight). Figures in red are maximum permissible spans in situations where there is one stud per trough. Permanent Support Temporary Support *See diagram on page

32 Multideck 60-V2 Fire Performance Mesh 1 The fire resistance tables for Multideck 60-V2 on the following pages are based upon fire test data from full scale tests performed at the Warrington Fire Research Centre UK, April All stated slab depths comply with the minimum fire insulation criteria of BS 476: Part The composite slab is assumed to be continuous over one or more intermediate supports. i.e. minimum double span. 4 For 2 hour rated slabs the mesh noted within the End Span table should be continuous over the first internal support, with the mesh shown in the Internal Span table being applicable over the second internal support and subsequent spans. 5 Minimum laps should be 300mm for A142 mesh and 400mm for A193 and A252 mesh. 6 The mesh should be placed between 15 and 40mm from the upper surface of the slab (this range caters for lap areas). 7 The tables are based upon Grade 30 concrete, reinforcement having a yield strength of 460N/mm 2. 8 The tables must be read in conjunction with load / span tables for Multideck 60-V2 to verify the structural integrity of the composite slab. 9 The values in all the tables are relevant to unpropped construction. For propped and single span conditions use the Kingspan Toolkit Software or contact Kingspan Technical Services. 10 The tables take into account the reduced partial factor of 0.8 as permitted in BS 5950: Part 8 for non-permanent imposed loads. The tables are presented in terms of total specified imposed load (non-permanent and permanent). It is assumed that the permanent imposed loads for partitions, finishes, ceilings and services are equivalent to 1.7kN/m 2 in all cases. The tables are therefore appropriate for office type applications. For other applications where the imposed loads are almost entirely permanent the total load should be adjusted accordingly before reading from the tables, eg: 150mm normal weight concrete plantroom slab and A142 mesh. 7.5kN/m 2 live load. 1.2kN/m 2 50mm screed finish 0.5kn/m 2 ceilings and services. 1 hour fire rating. Multideck 60-V2 profile Total applied load = /0.8 = kN/m 2 From table overleaf maximum span = 3.14m. 11 The * denotes that the mesh provided, although satisfying the fire resistance requirement, does not comply with the minimum anti-crack reinforcement requirement of BS 5950: Part 4. Refer to standard load / span tables for minimum mesh requirements. 12 For loan / span conditions beyond the scope of these tables the Fire Engineering Method as detailed in the SCI Publication 056 should be adopted or use Kingspan Toolkit Software. Please contact our Technical Services Department for advice. See following pages for MD 60-V2 Fire Resistance Tables. 13 Multideck 60-V2 can be used with Dramix Steel Fibre Reinforcement as an alternative to conventional fire engineering using steel mesh (see pages 36-40). Note: For load / span conditions beyond the scope of these tables, the Kingspan Multideck design software should be used to check for a solution. Toolkit Design Software provides an accurate and detailed analysis and Kingspan encourages its use for all design checks. 32

33 Multideck 60-V2 Fire Resistance Load Tables Normal Weight Concrete Unpropped Construction Fire rating: 1.0 hour Fire rating: 1.5 hours Slab Min Depth Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Size Span (m) Span (m) 130 A A A A A A A A A A A A A A A *A A A *A *A A Multideck 60 Normal Weight Concrete Unpropped Construction Fire rating: 2.0 hours end span Fire rating: 2.0 hours internal span Slab Min Depth Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Size Span (m) Span (m) 130 A A A A A A A A A A A A A A A *A A A *A *A A Note: These values are for unpropped spans only. For cases where the deck is propped please use the Kingspan Toolkit Software. 33

34 Multideck 60-V2 Fire Resistance Load Tables Lightweight Concrete Unpropped Construction Fire rating: 1.0 hour Fire rating: 1.5 hours Slab Min Depth Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Size Span (m) Lightweight Concrete Unpropped Construction Fire rating: 2.0 hours end span Fire rating: 2.0 hours internal span Slab Min Depth Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Size Span (m) Span (m) 120 A A A A A A A A A A A A A A A *A A A *A A A *A *A A Span (m) 120 A A A A A A A A A A A A A A A *A A A *A A A *A *A A Note: These values are for unpropped spans only. For cases where the deck is propped please use the Kingspan Toolkit Software. 34

35 Kingspan Multideck was used in the construction of Silverstone by Metaldeck Ltd, approved Kingspan installers Multideck 60 35

36 Multideck 60-V2 Fire Resistance Dramix Reinforced Concrete 30kg/m 3 RC-65/60-BN Load Tables (see pages ) 1 Hour Fire Rating Normal Weight Concrete Gauge 0.9mm Gauge 1.0mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m) Span (m) Hour Fire Rating Normal Weight Concrete Gauge 0.9mm Gauge 1.0mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m) Span (m) Note: These tables are not applicable to slabs where the deck is supplied in single span lengths (use Multideck Design software to determine suitable bottom bar requirements). 36

37 Multideck 60-V2 Fire Resistance Dramix Reinforced Concrete 30kg/m 3 RC-65/60-BN Load Tables (see pages ) 1 Hour Fire Rating Normal Weight Concrete Gauge 1.1mm Gauge 1.2mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m) Span (m) Multideck Hour Fire Rating Normal Weight Concrete Gauge 1.1mm Gauge 1.2mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m) Span (m) Notes: These tables are not applicable to slabs where the deck is supplied in single span lengths (use Multideck Design software to determine suitable bottom bar requirements) 37

38 Multideck 60-V2 Fire Resistance Dramix Reinforced Concrete 20kg/m 3 RC-80/60-BN Load Tables (see pages ) 1 Hour Fire Rating Normal Weight Concrete Gauge 0.9mm Gauge 1.0mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m) Span (m) Hour Fire Rating Normal Weight Concrete Gauge 0.9mm Gauge 1.0mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m) Span (m) Note: These tables are not applicable to slabs where the deck is supplied in single span lengths (use Multideck Design software to determine suitable bottom bar requirements) 38

39 Dramix Reinforced Concrete 20kg/m 3 RC-80/60-BN Load Tables (see pages ) 1 Hour Fire Rating Normal Weight Concrete Gauge 1.1mm Gauge 1.2mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m) Span (m) Multideck Hour Fire Rating Normal Weight Concrete Gauge 1.1mm Gauge 1.2mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m) Span (m) Note: These tables are not applicable to slabs where the deck is supplied in single span lengths (use Multideck Design software to determine suitable bottom bar requirements) 39

40 Multideck 60-V2 Fire Resistance Dramix Reinforced Concrete (20kg/m 3 RC-80/60-BN) Load Tables 2 Hour Fire Rating Normal Weight Concrete Gauge 0.9mm Gauge 1.0mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m) Span (m) Hour Fire Rating Normal Weight Concrete Gauge 1.1mm Gauge 1.2mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m) Span (m) Note: These tables are not applicable to slabs where the deck is supplied in single span lengths (use Multideck Design software to determine suitable bottom bar requirements) 40

41 Multideck 60-V2 Sound Attenuation Kingspan Structural Products have undertaken extensive testing on the acoustic performance of the Multideck range of composite steel deck slabs The testing was carried out on behalf of Kingspan Structural Products by the Steel Construction Institute and resulted in a comprehensive report Acoustic Performance of Kingspan Composite Floors copies of which can be obtained from Kingspan Structural Products technical Department. Multideck 60 Predicted Site Acoustic Performance of Floors with Multideck 60-V2 Predicted acoustic performance DnT,w + Ctr (db) For Airborne Sound Description of floor Slab Slab on deck with Slab on deck with Slab on deck with Slab on deck with Slab on deck with depth no ceiling and ceiling and ceiling and ceiling and ceiling and (mm) no floor treatment no floor treatment platform floor (FFT4) battened floor (FFT3) isolated screed to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to 61 Predicted acoustic performance L nt,w (db) For Impact Sound Description of floor Slab Slab on deck with Slab on deck with Slab on deck with Slab on deck with Slab on deck with depth no ceiling and ceiling and ceiling and ceiling and ceiling and (mm) no floor treatment no floor treatment platform floor (FFT4) battened floor (FFT3) isolated screed 120 to 76 to to to to to Note: The tables are based on a minimum concrete density of 2350kgs/m 3 and can be used with mesh or Dramix reinforcement. Lightweight concrete may lead to a reduction in acoustic performance of about 2 to 3 db on the values shown above. Values of DnT,w and Lnw are available from Kingspan Structural Technical Department. The junction details between the walls and floors must be appropriately detailed to ensure that flanking sound is minimised. The values in the table are based on the new (since 2003) measurement index DnT,w+Ctr for airborne sound. The Ctr term is a spectrum adaptation value which is generally negative and adjusts the index to take account of low frequency sounds that often cause problems in residential buildings. Thus the DnT,w +Ctr rating is lower than the DnT,w rating for the same construction. Pre-delivery rake cutting of sections is available. Please contact our Sales Department for details. 41

42 Multideck 80-V2 Please refer to the Multideck 80-V3 Load / Span document for information relating to the new 0.90mm gauge. Multideck 80-V2 is designed to incorporate all the advantages of the Multideck 60-V2 but in a deeper profile to provide longer spans up to 5.4m unpropped. Concrete Volume Savings Due to its unique profile Multideck 80-V2 requires less concrete than other decks to achieve any given slab thickness. Key benefits include: Contents Specification and Design 43 Load Tables 45 Fire Performance 50 Dramix Load Tables 52 Quicker Installation No temporary supports required under most conditions. A wide range of accessories allows for easy installation of ceilings and services. Technical Support Kingspan Toolkit software includes comprehensive composite floor design software which allows the user to easily select the right Multideck solution. The design software is available for download from the web site The Multideck design department provides a comprehensive engineering and advisory service to specifiers and end users on the use of the Multideck range of composite decks. 42

43 Multideck 80-V2 Specification and Design Profile and Dimensions (mm) Please refer to the Multideck 80-V3 Load / Span document for information relating to the new 0.90mm gauge. 900 cover width nominal Gauge = 1.0, 1.1 and 1.2mm Section Properties per Metre Width 9 gauge Maximum length: 12 metres 80.5 Multideck 80 Height to Second Ultimate Moment Normal Self Weight Neutral Axis Moment Steel Capacity (knm/m) Thickness of Area Area (mm) (kg/m 2 ) (kn/m 2 ) Sagging (cm 4 /m) (mm 2 /m) Sagging Hogging mm mm mm Material Specification 350N/mm 2 Steel Steel strip for Multideck 80-V2 complies with BS EN and BS EN 10326:2004 with a guaranteed minimum yield strength of 350N/mm 2 and a minimum total coating mass (including both sides) of 275g/m 2. Concrete Volumes and Specification Load / span tables are based on Grade C25/30 concrete, having a design strength of 30N/mm 2. Density of normal weight concrete: 2400kg/m 3 at wet stage. Density of lightweight concrete: 1900kg/m 3 at wet stage. All concrete used with Multideck in the construction of composite slabs should comply with the recommendations in BS 8110: Rake Cutting Pre-delivery cutting of sections is available. Please contact our Sales Department for details. Volume and Weight of Composite Slabs Reinforcement Reinforcement of the slab to control cracking in the concrete at all intermediate supports is required in BS 5950: Part Steel reinforcement for crack control or fire engineering purposes in accordance with British Standards: Hot rolled bars BS 4449: 1997; Mesh reinforcement BS 4483: A reinforced solution using Dramix Steel Fibres from Bekaert is available, see pages 101 to 103 for details. Embossments Raised diagonal embossments in opposite directions on each face of the webs of the decking provide the mechanical connection between the steel and the hardened concrete. References Engineers are advised to consult SCI / MCRMA Technical Paper 13 Composite Slabs and Beams using Steel Decking: Best Practice for Design and Construction. Weight (kn/m 2 ) Slab Concrete Normal Weight Lightweight Depth Volume Concrete Concrete (mm) (m 3 /m 2 ) Wet Dry Wet Dry Notes: 1 Important concrete volumes do not take into account deflection. 2 Excludes weight of steel decking and relates only to weight of concrete. 3 Concrete volumes are based upon a calculated minimum value (nominal slab depth). Account should be taken of deck and supporting structure deflections. 43

44 Pre-delivery rake cutting was utilised at Hammersmith Academy Kingspan Multideck was used in the construction of a satellite station Nr. Tackley, Oxford 44

45 Multideck 80-V2 Load Tables Please refer to the Multideck 80-V3 Load / Span document for information relating to the new 0.90mm gauge. When using load tables for Multideck 80-V2 please take into consideration the following notes: 1 The table shows the maximum span in meters of the Multideck product for the applied loads and slab depths shown. Values are shown for each gauge where the deck is single span or double spans, plus values for propped spans during construction. 2 Construction stage span capacity are generally noted under the 4kN/m 2 load and are shaded. For confirmation of maximum un-propped spans see page The span values are based on the use of a minimum 100mm bearing support. Where the bearing exceeds 100mm the span capacity can be increased. See example below. 4 Deck must lie flat on all supports beams. Point only contact will affect the design loading. 5 The self weight of the slab has been taken in to account in the table and should not be included in the applied loading. 6 All tabulated span capacities include applied construction stage load of 1.5kN/m 2 for spans of 3.0m or larger. For spans less than 3.0m the construction load is 4.5/span(m) kn/m 2. 7 The composite slab should meet the requirements of BS5950 Part with regard to their composite behaviour under normal loading. 8 The concrete grade is a minimum of C25/30 with a minimum ultimate strength is of 30N/mm 2. 9 Minimum reinforcement mesh sizes shown meet or exceed 0.1% gross cross sectional area of the concrete at the supports. Minimum reinforcement should be increased where:- a) The slab is propped during construction. b) It is required to control the size of cracking in the concrete i.e. where a brittle finishes is applied to the slab. c) There are moving loads. Mesh reinforcement should be placed near the upper edge of the concrete slab in a zone of 15mm to 40mm from the top surface. Concrete cover to reinforcement should be increased where slab exposure dictates. 10 Where in the table the span value is shown in red this shows the maximum permissible span where there is a minimum of one stud per trough. 11 Total applied load referred to in the table is a working load derived from the sum of the loads supported by the composite slab (live load, finishes, ceilings, services, partitions). Loads shown are based on Ultimate capacity / 1.6. The slab self weight has already been taken in to account do not include in applied loads. 12 Deflection under construction loading (wet concrete etc) has been limited to that stipulated in BS5950 Part At the composite stage the suggested maximum ratio of slab span to slab depth are 35 for NWC and 30 for LWC to control deflection. 13 For the propped during construction cases the temporary supports should remain in place until the concrete has achieved 75% of it 28 day cube strength often available after 7 days. 14 Where more than one prop is provided they should be equally spaced across the span of the Multideck. 15 Where * appears the addition of props gives no further spanning benefit in these cases. Definition of Span (Construction Stage) When Using Kingspan Load Tables 100mm minimum support c/c Support widths greater than 100mm? The span capacities shown on the following pages can be increased by the difference between the actual support widths and 100mm. The deck span (m) used in the table is based on the (Support c/c support bearing) + the deck depth. All values in metres. Example Support widths 140mm and 200mm. Span values can be increased by ( )/2 100 = 70mm. MD80-V2 1.2mm double span deck (no props). 150mm thick slab normal weight concrete. Construction stage span from page 45, 4.0kN/m 2 load column = 4810mm. With support widths of 140 and 200 the increased span capacity is = 4880mm. 100mm minimum Multideck 80 45

46 Multideck 80-V2 Load Tables Please refer to the Multideck 80-V3 Load / Span document for information relating to the new 0.90mm gauge. Normal Weight Concrete Load / Span Table (Steel 350N/mm 2 ) Unpropped Construction Gauge = 1.0 Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* 130 A A A A A A A A A A A A A A Load / Span Table (Steel 350N/mm 2 ) Propped Construction Gauge = 1.0 Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* 130 A A A A A A A A A252 Notes: Total applied load referred to in the above table is a working load based on combinations of live loads, finishes, ceilings, services and partitions (excluding slab self weight). Figures in red are maximum permissible spans in situations where there is one stud per trough. Permanent Support Temporary Support *See diagram on page

47 Multideck 80-V2 Load Tables Please refer to the Multideck 80-V3 Load / Span document for information relating to the new 0.90mm gauge. Normal Weight Concrete Load / Span Table (Steel 350N/mm 2 ) Unpropped Construction Gauge = 1.1mm Gauge = 1.2mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Span (m)* 130 A A A A A A A A A A A A A A Multideck 80 Load / Span Table (Steel 350N/mm 2 ) Propped Construction Gauge = 1.1mm Gauge = 1.2mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Span (m)* 130 A A A A A A A A A252 Notes: Total applied load referred to in the above table is a working load based on combinations of live loads, finishes, ceilings, services and partitions (excluding slab self weight). Figures in red are maximum permissible spans in situations where there is one stud per trough. Permanent Support Temporary Support *See diagram on page

48 Multideck 80-V2 Load Tables Please refer to the Multideck 80-V3 Load / Span document for information relating to the new 0.90mm gauge. Lightweight Concrete Load / Span Table (Steel 350N/mm 2 ) Unpropped Construction Gauge = 1.0 Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* 130 A A A A A A A A A A A A A A Load / Span Table (Steel 350N/mm 2 ) Propped Construction Gauge = 1.0 Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* 130 A A A A A A A A A252 Notes: Total applied load referred to in the above table is a working load based on combinations of live loads, finishes, ceilings, services and partitions (excluding slab self weight). Figures in red are maximum permissible spans in situations where there is one stud per trough. Permanent Support Temporary Support *See diagram on page

49 Multideck 80-V2 Load Tables Please refer to the Multideck 80-V3 Load / Span document for information relating to the new 0.90mm gauge. Lightweight Concrete Load / Span Table (Steel 350N/mm 2 ) Unpropped Construction Gauge = 1.1mm Gauge = 1.2mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Span (m)* 130 A A A A A A A A A A A A A A Multideck 80 Load / Span Table (Steel 350N/mm 2 ) Propped Construction Gauge = 1.1mm Gauge = 1.2mm Slab Min Span Type Depth Mesh Total Applied Load (kn/m 2 ) SLS Total Applied Load (kn/m 2 ) SLS (Support Condition) (mm) Size Span (m)* Span (m)* 130 A A A A A A A A A252 Notes: Total applied load referred to in the above table is a working load based on combinations of live loads, finishes, ceilings, services and partitions (excluding slab self weight). Figures in red are maximum permissible spans in situations where there is one stud per trough. Permanent Support Temporary Support *See diagram on page

50 Multideck 80-V2 Fire Performance Mesh 1 The fire resistance tables for Multideck 80-V2 on the following pages are based upon fire test data from full scale tests performed at the Warrington Fire Research Centre UK, April All stated slab depths comply with the minimum fire insulation criteria of BS 476: Part The composite slab is assumed to be continuous over one or more intermediate supports. i.e. minimum double span. 4 The fire resistance load tables are for continuous spans only with no propping. For 2 hour fire rating or propped and single span conditions use the Kingspan Toolkit Software or contact Kingspan Technical Services. 5 Minimum laps should be 300mm for A142 mesh and 400mm for A193 and A252 mesh. 6 The mesh should be placed between 15 and 40mm from the upper surface of the slab (this range caters for lap areas). 7 The tables are based upon Grade 30 concrete, reinforcement having a yield strength of 460N/mm 2. 8 The tables must be read in conjunction with load / span tables for Multideck 80-V2 to verify the structural integrity of the composite slab. 9 The values in all the tables are relevant to unpropped construction. 10 The tables take into account the reduced partial factor of 0.8 as permitted in BS 5950: Part 8 for non-permanent imposed loads. The tables are presented in terms of total specified imposed load (non-permanent and permanent). It is assumed that the permanent imposed loads for partitions, finishes, ceilings and services are equivalent to 1.7kN/m 2 in all cases. The tables are therefore appropriate for office type applications. For other applications where the imposed loads are almost entirely permanent the total load should be adjusted accordingly before reading from the tables, eg: 150mm normal weight concrete plantroom slab and A142 mesh. 7.5kN/m 2 live load. 1.2kN/m 2 50mm screed finish 0.5kN/m 2 ceilings and services. 1 hour fire rating. Multideck 80-V2 profile Total applied load = /0.8 = kN/m 2 From table opposite maximum span = 3.16m. 11 The * denotes that the mesh provided, although satisfying the fire resistance requirement, does not comply with the minimum anti-crack reinforcement requirement of BS 5950: Part 4. Refer to standard load / span tables for minimum mesh requirements. 12 For load span conditions beyond the scope of these tables the Kingspan Toolkit Software should be used which includes the Fire Engineering Method as detailed in the SCI Publication 056. See following pages for Multideck 80-V2 Fire Resistance Tables. Note: For load / span conditions beyond the scope of these tables, the Kingspan Multideck design software should be used to check for a solution. Toolkit Design Software provides an accurate and detailed analysis and Kingspan encourages its use for all design checks. 50

51 Multideck 80-V2 Fire Resistance Load Tables Normal Weight Concrete Fire rating: 1.0 hour Fire rating: 1.5 hours Slab Min Depth Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Size Span (m) Span (m) 140 A A A A A A A A A A A A *A A A *A *A A Multideck 80 Lightweight Concrete Fire rating: 1.0 hour Fire rating: 1.5 hours Slab Min Depth Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Size Span (m) Span (m) 130 LWC A LWC A LWC A LWC A LWC A LWC A LWC A LWC A LWC A LWC A LWC A LWC A LWC *A LWC A LWC A LWC *A LWC A LWC A LWC *A LWC *A LWC A

52 Multideck 80-V2 Fire Resistance Dramix Reinforced Concrete 20kg/m 3 RC-80/60-BN Load Tables (see pages ) 1 Hour Fire Rating Normal Weight Concrete Gauge 1.0mm Slab Depth Total Applied Load (kn/m 2 ) (mm) Span (m) Hour Fire Rating Normal Weight Concrete Gauge 1.0mm Slab Depth Total Applied Load (kn/m 2 ) (mm) Span (m) Note: These tables are not applicable to slabs where the deck is supplied in single span lengths (use Multideck Design software to determine suitable bottom bar requirements). 52

53 Multideck 80-V2 Fire Resistance Dramix Reinforced Concrete 20kg/m 3 RC-80/60-BN Load Tables (see pages ) 1 Hour Fire Rating Normal Weight Concrete Gauge 1.1mm Gauge 1.2mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m) Span (m) Multideck Hour Fire Rating Normal Weight Concrete Gauge 1.1mm Gauge 1.2mm Slab Depth Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) Span (m) Span (m) Note: These tables are not applicable to slabs where the deck is supplied in single span lengths (use Multideck Design software to determine suitable bottom bar requirements). 53

54 Multideck 80-V2 Sound Attenuation Kingspan Structural Products have undertaken extensive testing on the acoustic performance of the Multideck range of composite steel deck slabs. The testing was carried out on behalf of Kingspan Structural Products by the Steel Construction Institute and resulted in a comprehensive report Acoustic Performance of Kingspan Composite Floors copies of which can be obtained from Kingspan Structural Products Technical Department. Predicted Site Acoustic Performance of Floors with Multideck 80-V2 Predicted acoustic performance DnT,w + Ctr (db) For Airborne Sound Description of floor Slab Slab on deck with Slab on deck with Slab on deck with Slab on deck with Slab on deck with depth no ceiling and ceiling and ceiling and ceiling and ceiling and (mm) no floor treatment no floor treatment platform floor (FFT4) battened floor (FFT3) isolated screed to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to 60 Predicted acoustic performance L nt,w (db) For Impact Sound Description of floor Slab Slab on deck with Slab on deck with Slab on deck with Slab on deck with Slab on deck with depth no ceiling and ceiling and ceiling and ceiling and ceiling and (mm) no floor treatment no floor treatment platform floor (FFT4) battened floor (FFT3) isolated screed 120 to 76 to to to to to Note: The tables are based on a minimum concrete density of 2350kgs/m 3 and can be used with mesh or Dramix reinforcement. Lightweight concrete may lead to a reduction in acoustic performance of about 2 to 3 db on the values shown above. Values of DnT,w and Lnw are available from Kingspan Structural Technical Department. The junction details between the walls and floors must be appropriately detailed to ensure that flanking sound is minimised. The values in the table are based on the new (since 2003) measurement index DnT,w+Ctr for airborne sound. The Ctr term is a spectrum adaptation value which is generally negative and adjusts the index to take account of low frequency sounds that often cause problems in residential buildings. Thus the DnT,w +Ctr rating is lower than the DnT,w rating for the same construction. Pre-delivery rake cutting of sections is available. Please contact our Sales Department for details. 54

55 Kingspan Multideck was used in the construction of Colmore Plaza, Birmingham, UK Multideck 80 Kingspan Multideck was used in the construction of The University of Nottingham, Nottingham, UK 55

56 Multideck 146 Contents Specification and Design 57 Load Tables 59 Fire Performance 62 Sound Attenuation 65 Concrete Volume Savings Multideck 146 composite steel deck is optimised to minimise the concrete volumes on longer spans providing significant savings in comparison to traditional trapezoidal steel decks used free spanning or propped. Multideck 146 requires 31% less concrete than the next best spanning 80mm trapezoidal deck of the equivalent slab depth. The saving in concrete translates into a saving in weight that the structure must support, resulting in economies in the supporting structure and foundations. Typical Concrete Volume Savings Using Multideck Cubic Metres mm slab 250mm slab 275mm slab 300mm slab Concrete Volume Required Per 1000m 2 Floor Area 146 Deck 80 Deck 60 Deck 50 Deck Note: The above volumes do not take into account deflection. Multideck 146 has been engineered to optimise performance of the steel and concrete. No other trapezoidal profile can span as far as Multideck 146. It supports normal weight concrete without the need for props, providing new opportunities for efficiencies in construction. Multideck 146 should be considered for projects with spanning requirements of 4.0m and above. The deck can be supported on the top flange of a beam or partnered with ultra shallow fabricated beams to produce a truly shallow floor construction of 215mm depth. Key benefits include: Prefixed Studs Multideck 146 is a single spanning deck so it is ideal for use with beams that have the shear studs attached in the fabrication shop avoiding, or vastly reducing, the need to through deck stud weld on site. While Multideck 146 is generally used with 19mm diameter shear studs it can be equally used with other types of shear attachments as long as the deck is provided with a minimum bearing of 50mm. Multideck 146 can be through deck stud welded on site without difficulty. Technical Support Kingspan Toolkit software includes comprehensive composite floor design software which allows the user to easily select the right Multideck solution. The design software is available for download from the web site The Multideck design department provides a comprehensive engineering and advisory service to specifiers and end users on the use of the Multideck range of composite decks. Greater Design Efficiency Multideck 146 enhances the performance of the Multideck family of composite steel decks providing efficient spanning capacities to beyond 6.0m. There is a Multideck profile to suit each and every requirement. Quicker Installation Multideck 146 deck is 600mm wide and with no need for temporary props, even on spans of 6.0m, means this deck is quick to install. Reduced concrete volumes means quicker laying times and fewer concrete deliveries to site. 56

57 Multideck 146 Specification and Design Profile and Dimensions (mm) 599 cover width gauge º Spans up to 6 metres without the need for temporary props and uses minimal concrete Gauges 1.2mm and 1.5mm Maximum length 14.0m Section Properties per Metre Width Height to Second Ultimate Moment Normal Self Weight Neutral Axis Moment Steel Capacity (knm/m) Thickness of Area Area (mm) (kg/m 2 ) (kn/m 2 ) Sagging (cm 4 /m) (mm 2 /m) Sagging Multideck Material Specification 350N/mm 2 Steel Steel strip used in the manufacture of Multideck 146 complies with BS EN 10143:1993 and BS EN 10326:2004 with a guaranteed minimum yield strength of 350N/mm 2 and a minimum total (total both sides) coating mass of 275 gram/m 2. Concrete Volumes and Specification Load / span tables are based on Grade C25/30 concrete, having a cube strength of 30N/mm 2. Density of normal weight concrete: 2400kg/m 3 at wet stage. Density of lightweight concrete: 1900kg/m 3 at wet stage. All concrete used with Multideck in the construction of composite slabs should comply with the recommendations in BS 8110: Rake Cutting Pre-delivery cutting of sections is available. Please contact our Sales Department for details. Reinforcement Reinforcement of the concrete slab to control cracking at all supports is required in accordance with BS EN 5950 Part 4: Steel reinforcement for crack control or fire performance engineering should be in accordance with British Standards. Hot rolled bars BS EN 4449: Fabric reinforcement BS 4483: Embossments Raised diagonal embossments in opposite directions on each face of the webs, provide mechanical connection between the steel deck and the hardened concrete. References Engineers are advised to consult the SCI / MCRMA publication P300 Composite Slabs and beams using steel decking: Best practice for Design and Construction. Volume and Weight of Composite Slabs Weight (kn/m 2 ) Slab Concrete Normal Weight Lightweight Depth Volume Concrete Concrete (mm) (m 3 /m 2 ) Wet Dry Wet Dry Notes: 1 Important concrete volumes do not take into account deflection. 2 Excludes weight of steel decking and relates only to weight of concrete. 3 Concrete volumes are based upon a calculated minimum value (nominal slab depth). Account should be taken of deck and supporting structure deflections. 57

58 Multideck 146 Reinforcement Reinforcement to Concrete Composite Slab The Multideck 146 composite concrete slab is always reinforced with one 16mm diameter bar in every trough and a suitable steel mesh reinforcement positioned near the top of the concrete slab. 16mm Diameter Bar Reinforcement The Multideck 146 composite concrete slab requires a 16mm diameter rod positioned in every trough at 60mm height (from bottom of the deck). This bar reinforcement works in conjunction with the 146 steel deck to enhance the composite and fire design stage performance. In some cases the bar reinforcement will need to be anchored, this can be achieved by sufficient overlap of the bars over internal supports. On external supports the anchorage can be provided by U bars if present, or by creating a 90º bend at the end of the bar over the support. Mesh Reinforcement Mesh is required to control the cracking that can occur in the concrete due to shrinkage or stresses in the concrete. BS EN 5950 part 4 recommends that the mesh area is a minimum of 0.1% of the cross sectional area of the concrete slab. The engineer should increase the mesh area where: the slab is propped; the size of cracks in the concrete needs to be minimised; brittle finishes are applied to the slab surface; moving wheel loads or point loads are applied to the slab. Mesh reinforcement should be placed near the upper edge of the concrete slab, in a zone of 15mm to 40mm. Mesh sheets must be overlapped, use of flying ends make overlapping easier and avoid build up of the mesh thickness at overlaps. The mesh should be supported on suitable mesh stools to maintain the required mesh position. U bars are required at composite edge beams with shear studs, as on all other concrete composite steel deck floors supported on composite beams. Note: Bar shown in central trough only for clarity. All troughs should include bar reinforcement. Spacer system by specialist manufacturer. 58

59 Multideck 146 Load Tables When using load tables for Multideck 146 please take into consideration the following notes: 1 All tabulated figures include the self weight of the slab. 2 All tabulated figures include a construction allowance of 1.5kN/m 2 over a length of 3.0m and 0.75kN/m 2 over the remainder of the span. The 1.5kN/m 2 is positioned at mid span for bending moment and adjacent to the support for shear (see diagram). 3 All tabulated values are based on use of concrete grade C25/30. 4 All tabulated loads include ponding of the wet concrete due to the deflection of the Multideck 146. Additional concrete due to the deflection of the supports (beams) is not included in the table. Use the Toolkit Software to check solutions with additional loading to account for support deflection. 5 The suggested maximum ratios of slab span to slab depth are 30 for LWC and 35 for NWC to control deflections. 6 Deflection under construction loading (wet concrete etc.) has been limited to that stipulated in BS 5950: Part Minimum reinforcement mesh sizes shown provide both 0.1% of the gross cross-sectional area and 0.2% of the cross sectional area above the ribs of the concrete at the support. Minimum reinforcement should be increased where the slab is propped or there are moving loads, or concrete crack size is a consideration i.e. where brittle finishes are required. Mesh reinforcement should be placed near the upper edge of the concrete slab, in a zone of 15mm to 40mm. 8 All values require a minimum of one 16mm diameter bar, grade B500, in each trough positioned at 60mm height 9 Line loads and / or point loading may require additional local reinforcement. Use the Multideck design software. 10 Total applied load referred to in the load tables is a working load based on factored combinations of live loads, finishes, ceilings, services and partitions, divided by a load factor of 1.60 (excluding slab self weight). 11 Temporary supports should remain in place until the concrete has achieved its 75% of the 28 day cube strength often available after 7 days. 12 Deck must lie flat on all support beams. Point only contact at the support will affect design loading. 13 Span values are centres of supports based on a width of support of 100mm. Minimum of 50mm end bearing on steel or concrete and 75mm on other materials. 14 Construction stage spans are generally noted under the 4.0kN/m 2 loads and shaded. For confirmation of maximum unpropped spans see page Minimum slab depth is 195mm flush with top of studs but will require a structural cementitious screed for fire insulation. Definition of Span (Construction Stage) When Using Kingspan Load Tables construction load 1.5kN/m 2 x 1.6 self weight x 1.4 3m construction load 1.5kN/m 2 x 1.6 self weight x 1.4 3m span span Tip: Use the Kingspan Toolkit CD with Word output to save time on your structural calculations. Construction load positioned for max bending moment Construction load positioned for max shear reduced construction load 0.75kN/m 2 x 1.6 reduced construction load 0.75kN/m 2 x 1.6 Multideck

60 Multideck 146 Load Tables Normal Weight Concrete Load / Span Table (Steel 350N/mm 2 ) Unpropped Construction Gauge 1.2mm Slab Concrete Minimum Depth Volume Mesh Total Applied Load (kn/m 2 ) (mm) (m 3 ) Size Maximum Span (m) A A A A A A A A A A Load / Span Table (Steel 350N/mm 2 ) Unpropped Construction Gauge 1.5mm Slab Concrete Minimum Depth Volume Mesh Total Applied Load (kn/m 2 ) (mm) (m 3 ) Size Maximum Span (m) A A A A A A A A A A Load / Span Table (Steel 350N/mm 2 ) Propped (Mid Span) Construction Gauge 1.5mm Slab Concrete Minimum Depth Volume Mesh Total Applied Load (kn/m 2 ) (mm) (m 3 ) Size Maximum Span (m) A * * A * * A * * A * * A * A * A * A * A * A * Notes: All values require mesh as shown and 16mm diameter bar at 60mm height. Minimum reinforcement mesh sizes shown provide both 0.1% of the gross cross-sectional area and 0.2% of the cross sectional area above the ribs of the concrete at the support. Construction stage spans are noted under the 4.0kN/m 2 loads and shaded. * In these cases there is no improvement in span capacity in using propped construction over non propped construction. Propped values for the 1.2 gauge Multideck 146 should be obtained from the Multideck software. There is no Dramix Steel Fibre solution for Multideck

61 Multideck 146 Load Tables Light Weight Concrete Load / Span Table (Steel 350N/mm 2 ) Unpropped Construction Gauge 1.2mm Slab Concrete Minimum Depth Volume Mesh Total Applied Load (kn/m 2 ) (mm) (m 3 ) Size Maximum Span (m) A A A A A A A A A A Load / Span Table (Steel 350N/mm 2 ) Unpropped Construction Multideck 146 Gauge 1.5mm Slab Concrete Minimum Depth Volume Mesh Total Applied Load (kn/m 2 ) (mm) (m 3 ) Size Maximum Span (m) A A A A A A A A A A Load / Span Table (Steel 350N/mm 2 ) Propped (Mid Span) Construction Gauge 1.5mm Slab Concrete Minimum Depth Volume Mesh Total Applied Load (kn/m 2 ) (mm) (m 3 ) Size Maximum Span (m) A * * * * A * * * * A * * * A * * * A * * * A * * * A * * * A * * A * * A * * Notes: All values require mesh as shown and 16mm diameter bar at 60mm height. Minimum reinforcement mesh sizes shown provide both 0.1% of the gross cross-sectional area and 0.2% of the cross sectional area above the ribs of the concrete at the support. Construction stage spans are noted under the 4.0kN/m 2 loads and shaded. * In these cases there is no improvement in span capacity in using propped construction over non propped construction. Propped values for the 1.2 gauge Multideck 146 should be obtained from the Multideck software. There is no Dramix Steel Fibre solution for Multideck

62 Multideck 146 Fire Performance Mesh 1 The fire resistance tables for Multideck 146 on the following pages must be read in conjunction with load / span tables for Multideck 146 to verify the structural integrity of the composite slab. 2 The following fire resistance tables for Multideck 146 are based on analysis by the Steel Construction Institute. 3 All stated slab depths comply with the minimum fire insulation criteria. 4 The composite slab is treated as a single span so the values shown can be used on a single or continuous slab. 5 All solutions have a minimum of one 16 bar grade B500 per trough at 60mm height. The load tables are shown for unanchored and anchored bar reinforcement. Where there are internal supports anchoring the bars can be achieved with a simple overlap. At the end support, U bars around composite shear studs will provide the anchor. Otherwise use bond lengths beyond the inner flange edge and straight or bent bars. The unanchored solution does not need any additional attachment of the bars. 6 Minimum laps should be 300mm for A142 mesh and 400mm for A193, A252 and A393 mesh. 7 Mesh reinforcement should be placed near the upper edge of the concrete slab, in a zone of 15mm to 40mm. 8 The tables are based upon Grade C25/30 concrete for other grades use the Multideck design software. 9 The tables are based on a load factor of 1.0 for the fire case. Further capacity can be achieved by taking into account the reduced partial factor of 0.8 or 0.5 as permitted in BS 5950: Part 8 for non-permanent imposed loads. 10 For fire performance on propped construction use the Multideck Design Software. 11 Span values are centres of supports based on a width of support of 100mm. Minimum of 50mm end bearing on steel or concrete and 75mm on other materials. Examples of the applied loads for the fire load tables load factors from BS5950 part 8. The load tables are based on a Fire limit state load factor γf of 1.0. For some applications the non permanent loading can use a load factor of γf of 0.8 and for office 0.5. See table 5 BS 5950 part 8 section 7.1. Case 1 office (general use) kn/m 2 Fire limit state load (kn/m 2 ) Dead loads 3.75 x 1.0 = 3.75 Super load 2.5 Non permanent 2.5 x 0.5 = 1.25 office Load value for fire limit state 5.00 For a 215mm slab with 1.0 hour fire, the max span for anchored bars is 7.05m and for unanchored 6.33m. Case 2 general (excluding plant and storage) kn/m 2 Fire limit state load (kn/m 2 ) Dead loads 1.0 x 1.0 = 1.0 Super load 5.0 Made up of Permanent 3.0 x 1.0 = 3.0 Non permanent 2.0 x 0.8 = 1.6 general Load value for fire limit state 5.6 For a 225mm slab with 1.5 hour fire, the max span for anchored bars is 6.92m and for unanchored 5.73m. Always check the load span capacity to verify the structural capacity and use the lesser of the capacities, fire limit state or structural. Note: For load / span conditions beyond the scope of these tables, the Kingspan Multideck design software should be used to check for a solution. Toolkit Design Software provides an accurate and detailed analysis and Kingspan encourages its use for all design checks. 62

63 Multideck 146 Fire Resistance Anchored 16mm diameter bar reinforcement Load Tables Normal Weight Concrete Unpropped Construction Fire rating: 0.5 hour Fire rating: 1.0 hour Slab Concrete Minimum Depth Volume Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) (m 3 ) Size Maximum Span (m) all 146 gauges Maximum Span (m) all 146 gauges A A A A A A A A A A Fire rating: 1.5 hour Fire rating: 2.0 hour Slab Concrete Minimum Depth Volume Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) (m 3 ) Size Maximum Span (m) all 146 gauges Maximum Span (m) all 146 gauges A A A A A A A A A A Light Weight Concrete Unpropped Construction Multideck 146 Fire rating: 0.5 hour Fire rating: 1.0 hour Slab Concrete Minimum Depth Volume Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) (m 3 ) Size Maximum Span (m) all 146 gauges Maximum Span (m) all 146 gauges A A A A A A A A A A Fire rating: 1.5 hour Fire rating: 2.0 hour Slab Concrete Minimum Depth Volume Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) (m 3 ) Size Maximum Span (m) all 146 gauges Maximum Span (m) all 146 gauges A A A A A A A A A A Note: These values are for unpropped spans only. For cases where the deck is propped please use the Kingspan Toolkit Software. 63

64 Multideck 146 Fire Resistance Unanchored 16mm diameter bar reinforcement Load Tables Normal Weight Concrete Unpropped Construction Fire rating: 0.5 hour Fire rating: 1.0 hour Slab Concrete Minimum Depth Volume Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) (m 3 ) Size Maximum Span (m) all 146 gauges Maximum Span (m) all 146 gauges A A A A A A A A A A Fire rating: 1.5 hour Fire rating: 2.0 hour Slab Concrete Minimum Depth Volume Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) (m 3 ) Size Maximum Span (m) all 146 gauges Maximum Span (m) all 146 gauges A A A A A A A A A A Light Weight Concrete Unpropped Construction Fire rating: 0.5 hour Fire rating: 1.0 hour Slab Concrete Minimum Depth Volume Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) (m 3 ) Size Maximum Span (m) all 146 gauges Maximum Span (m) all 146 gauges A A A A A A A A A A Fire rating: 1.5 hour Fire rating: 2.0 hour Slab Concrete Minimum Depth Volume Mesh Total Applied Load (kn/m 2 ) Total Applied Load (kn/m 2 ) (mm) (m 3 ) Size Maximum Span (m) all 146 gauges Maximum Span (m) all 146 gauges A A A A A A A A A A Note: These values are for unpropped spans only. For cases where the deck is propped please use the Kingspan Toolkit Software.

65 Multideck 146 Sound Attenuation Kingspan Structural Products have undertaken extensive testing on the acoustic performance of the Multideck range of composite steel deck slabs. The testing was carried out on behalf of Kingspan Structural Products by the Steel Construction Institute and resulted in a comprehensive report, Acoustic Performance of Kingspan Composite Floors, copies of which can be obtained from Kingspan Structural Products Technical Department. Predicted Site Acoustic Performance of Floors with Multideck 146 Predicted acoustic performance DnT,w + Ctr (db) For Airborne Sound Description of floor Slab Slab on deck with Slab on deck with Slab on deck with Slab on deck with Slab on deck with depth no ceiling and ceiling and ceiling and ceiling and ceiling and (mm) no floor treatment no floor treatment platform floor (FFT4) battened floor (FFT3) isolated screed Multideck to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to to 61 Predicted acoustic performance L nt,w (db) For Impact Sound Description of floor Slab Slab on deck with Slab on deck with Slab on deck with Slab on deck with Slab on deck with depth no ceiling and ceiling and ceiling and ceiling and ceiling and (mm) no floor treatment no floor treatment platform floor (FFT4) battened floor (FFT3) isolated screed 215 to 78 to to to to to Note: Values shown shaded are not sufficient for separating floors in residential buildings. For floor systems which comprise a composite slab (depth = 215 to 305mm) on Multideck 146 deck, a suspended ceiling and a floor treatment, the airborne and impact sound insulation provided will easily satisfy the requirements for separating floors in residential buildings. The junction details between the walls and floors must be appropriately detailed to ensure flanking sound is minimised. Pre-delivery rake cutting of sections is available. Please contact our Sales Department for details. 65

66 Construction Details Multideck 50-V2 Side Detail Shear stud Restraint strap Concrete slab Slab edge trim Trim depth varies to suit slab 50 min Multideck 50-V2 composite metal deck Side Detail Composite Beam Design Min edge distance 6d to C L stud from edge of slab (BS 5950 : PT 3 Section 3:1) Concrete slab Slab edge trim Multideck 50-V2 composite metal deck Restraint strap 40 min Trim depth varies to suit slab Shear stud 50 min 66

67 Multideck packs positioned on steelwork. Photo Courtesy of Metaldeck Ltd. Construction Details Kingspan Multideck was used in the construction of Marsden House, Bolton, UK. Photo Courtesy of Metaldeck Ltd. 67

68 Construction Details Multideck 50-V2 Side Detail with Cantilever Slab edge trim Trim depth varies to suit slab Shear stud Restraint strap Concrete slab Maximum cantilever 50 min 40 min Multideck 50-V2 composite metal deck Maximum Edge Trim Cantilevers (mm) Edge Trim Gauge (mm) Slab Depth (mm) These values are for guidance only Notes: 1. Deflection is limited to 3.0mm (approx) under wet weight of concrete only. 2. The table can be used for normal and lightweight concrete. 3. An allowance of 1.5kN/m 2 is made for construction imposed load in the bending capacity analysis. 4. Edge trim acts as permanent formwork only. Any necessary cantilever reinforcement should be designed to BS 8110 requirements. 5. We recommend that slabs of 200mm and over use 2.0mm edge trim. 6. Assumes that edge restraint straps are fixed as least every 600mm. Omagh College, Tyrone, Ireland. Photo Courtesy of Composite Design Ireland Ltd. 68

69 Construction Details Multideck 50-V2 End Detail Concrete slab Slab edge trim Shear stud Multideck 50-V2 composite metal deck Restraint strap Trim depth varies to suit slab Maximum cantilever 50 min 50 min End closure tape or foam to prevent excessive grout loss Construction Details End Detail with Cantilever Slab edge trim Restraint strap Shear stud Concrete slab Trim depth varies to suit slab Multideck 50-V2 composite metal deck Notes: 1. All dimensions are nominal and to be used as a guide for setting out details 2. Construction stage deck cantilevers should be limited to the lesser of (a) 1/4 x adjacent span, or (b) 600mm. 3. Decking acts as permanent formwork only for cantilever slabs: any necessary cantilever reinforcement should be designed to BS 8110 requirements by the Engineer. 69

70 Multideck was used in the construction of the Reghed Visitor Centre, Cumbria, UK. Photo Courtesy of MSW (UK) Ltd. 70

71 Construction Details Multideck 50-V2 Intermediate Beam Detail Concrete slab Slab depth varies Shear stud Multideck 50-V2 composite metal deck 40 min 40 min Construction Details 71

72 Construction Details Multideck 50-V2 Intermediate Beam Change in Direction of Lay Concrete slab Slab depth varies Shear stud End closure tape or foam to prevent excessive grout loss Multideck 50-V2 composite metal deck 72

73 Construction Details Multideck 50-V2 Intermediate Beam Change in Direction of Lay with Ledger Angle Concrete slab Slab depth varies Multideck 50-V2 composite metal deck Ledger angle projection (see diagram below) 50mm min bearing End closure tape or foam to prevent excessive grout loss Construction Details Multideck Supported on Ledger Angles Where Multideck is supported on ledger angles check deck length (L) required to fit and provide minimum bearing of 50mm at a each end as follows. L (Max.) = S (F/2 + T/2 + 20mm) Pre-delivery rake cutting of sections is available. Please contact our Sales Department for details. L (Min.) = C + (50 x 2) beam c/c S (mm) deck length L (mm) flange width F (mm) final position of deck 50mm min. bearing clear between shelf angles C (mm) 50mm min. bearing web T (mm) 73

74 Construction Details Multideck 60-V2 and 80-V2 Side Detail Composite Beam Design Min edge distance 6d to C L stud from edge of slab (BS 5950 : PT 3 Section 3:1) Shear stud Restraint strap Concrete slab Slab edge trim Trim depth varies to suit slab 50 min 40 min Multideck 60-V2 / 80-V2 composite metal deck Maximum Edge Trim Cantilevers (mm) Edge Trim Gauge (mm) Slab Depth (mm) These values are for guidance only Notes: 1. Deflection is limited to 3.0mm (approx) under wet weight of concrete only. 2. The table can be used for normal and lightweight concrete. 3. An allowance of 1.5kN/m 2 is made for construction imposed load in the bending capacity analysis. 4. Edge trim acts as permanent formwork only. Any necessary cantilever reinforcement should be designed to BS 8110 requirements. 5. We recommend that slabs of 200mm and over use 2.0mm edge trim. 6. Assumes that edge restraint straps are fixed as least every 600mm. Two Towers, Arnhem, Netherlands. Photo Courtesy of MSW (UK) Ltd. 74

75 Construction Details Multideck 60-V2 and 80-V2 Side Detail using Closure Trim Slab edge trim Shear stud Concrete slab Restraint strap Trim depth varies to suit slab Maximum cantilever 50 min 40 min 100 max Multideck side closure profile A Multideck 60-V2 / 80-V2 composite metal deck (All dimensions are nominal and to be used as a guide for setting out details) Construction Details Side Detail Multideck Cut to Width Concrete slab Slab edge trim Restraint strap Shear stud Multideck 60-V2 / 80-V2 composite metal deck Trim depth varies to suit slab Maximum cantilever 50 min 40 min 100 max Multideck side closure profile A 75

76 Construction Details Multideck 60-V2 and 80-V2 End Detail using End Closure Concrete slab Shear stud Slab edge trim Restraint strap Trim depth varies to suit slab Maximum cantilever 50 min End closure piece to prevent excessive grout loss Multideck 60-V2 / 80-V2 composite metal deck End Detail Multideck Cantilever Slab edge trim Shear stud Concrete slab Restraint strap Trim depth varies to suit slab 50 min Maximum cantilever (see note 1) Multideck 60-V2 / 80-V2 composite metal deck Note: 1. Construction stage deck cantilevers should be limited to the lesser of (a) 1/4 x adjacent span, or (b) 600mm. 2. Decking acts as permanent formwork only for cantilever slabs: any necessary cantilever reinforcement should be designed to BS 8110 requirements by the Engineer. 76

77 Construction Details Multideck 60-V2 and 80-V2 Intermediate Beam using Closure Trim Shear stud Slab depth varies Concrete slab 100 max 40 min Multideck 60-V2 / 80-V2 composite metal deck Construction Details Intermediate Beam Change in Direction of Lay Concrete slab Slab depth varies Shear stud End closure piece to prevent excessive grout loss Pre-delivery rake cutting of sections is available. Please contact our Sales Department for details. Multideck 60-V2 / 80-V2 composite metal deck 77

78 Construction Details Multideck 60-V2 and 80-V2 Intermediate Beam Change in Direction of Lay with Ledger Angle Concrete slab Slab depth varies Multideck 60-V2 / 80-V2 composite metal deck End closure piece to prevent excessive grout loss 50mm min bearing Ledger angle projection (see diagram below) Multideck Supported on Ledger Angles Where Multideck is supported on ledger angles check deck length (L) required to fit and provide minimum bearing of 50mm at a each end as follows. L (max.) = S (F/2 + T/2 + 20mm) L (min.) = C + (50 x 2) beam c/c S (mm) deck length L (mm) flange width F (mm) final position of deck 50mm min. bearing clear between shelf angles C (mm) 50mm min. bearing web T (mm) 78

79 79 Construction Details

80 Construction Details Multideck 146 Minimum Bearing Surface End Bearing on Brick or Blockwork Walls Continuous Bearing on Brick or Blockwork Walls 70 min 100 min End Bearing on Steel or Concrete Continuous Bearing on Steel or Concrete 50 min 75 min 80

81 Construction Details Multideck 146 Side Detail Composite Beam Design Min. edge distance 6d to C L stud from edge of slab (BS 5950 : PT 3 Section 3:1) Restraint strap Concrete slab Slab edge trim Shear stud Trim depth varies to suit slab 50 min 40 min Multideck 146 composite metal deck Construction Details Maximum Edge Trim Cantilevers (mm) Edge Trim Gauge (mm) Slab Depth (mm) These values are for guidance only Pre-delivery rake cutting of sections is available. Please contact our Sales Department for details. Notes: 1. Deflection is limited to 3.0mm (approx) under wet weight of concrete only. 2. The table can be used for normal and lightweight concrete. 3. An allowance of 1.5kN/m 2 is made for construction imposed load in the bending capacity analysis. 4. Edge trim acts as permanent formwork only. Any necessary cantilever reinforcement should be designed to BS 8110 requirements. 5. Assumes that edge restraint straps are fixed as least every 600mm. 81

82 Construction Details Multideck 146 Side Detail using Closure Trim Slab edge trim Restraint strap Shear stud Concrete slab Trim depth varies to suit slab Maximum cantilever 50 min 40 min Multideck side closure Multideck 146 composite metal deck 100 max (All dimensions are nominal and to be used as a guide for setting out details) Side Detail Multideck Cut to Width Slab edge trim Restraint strap Shear stud Concrete slab Trim depth varies to suit slab Maximum cantilever 50 min 40 min Multideck side closure Multideck 146 composite metal deck 100 max 82

83 Construction Details Multideck 146 End Detail using End Closure Slab edge trim Shear stud Concrete slab Restraint strap Trim depth varies to suit slab Maximum cantilever 50 min End closure piece to prevent excessive grout loss Multideck 146 composite metal deck Construction Details End Detail Multideck Cantilever Slab edge trim Shear stud Concrete slab Restraint strap Trim depth varies to suit slab 50 min Maximum cantilever (see note 1) Note: Multideck 146 composite metal deck 1. Construction stage deck cantilevers should be limited to the lesser of (a) 1/4 x adjacent span, or (b) 600mm. 2. Decking acts as permanent formwork only for cantilever slabs: any necessary cantilever reinforcement should be designed to BS 8110 requirements by the Engineer. 83

84 Sitework Transport and Site Access Delivery vehicles are up to 16m long with a maximum gross weight of 30 tonnes and a turning circle of 25m. They require an access road at least 4m wide and 12m of good hard standing to allow for crane-operated unloading. Standard loads will not exceed 25 tonnes. Unloading Unloading of vehicles on-site is the responsibility of others. Safe Off Loading Systems Available Trailers with an integral fall arrest system are available on request. Please liase with your Customer Service contact when discussing deliveries. Trailers equipped with Moffett mounted truck mountable fork lift trucks are also available. Fork Lift Trucks Sheets of Multideck up to 7m long can be off loaded by fork lift trucks. Sheets longer than 7m should be lifted by crane. Multideck should be placed directly onto the supporting steelwork. If this is impractical, it should be stored as recommended under Storage. Deck Identification All Multideck bundles are marked to correspond with the customers identification requirements. Identification includes floor location, grid location, deck length, gauge and direction of lay. Where possible, bundles should be lifted from the transport and placed on the support frame ready for fixing. See pages 86 and 87. Quality Control On-site Quality control on site should be based on the recommendations of BS 8000: Part 2 Concrete Work. Storage Multideck should be stored under cover or beneath waterproof tarpaulins, off the ground on suitable timber framing with good air circulation around the sheet. The sheets should slope to drain away any rain water which may enter the storage area. When exposed to moisture, galvanised deck will develop a coating of zinc oxide. If left, this may reduce the degree of protection, so it is important to inspect regularly for moisture, and take immediate remedial action. Handling When deck has to be lifted onto the building framework, care must be taken to avoid damage by using suitable lifting equipment. Use of unprotected chains will cause damage and are not recommended. Sheet corners must be protected as these are particularly vulnerable to damage. Never walk on deck in the stack or before it is securely fixed in position (see also Safety ). Multideck sheets must not be dragged from the stack. Remove by lifting off one at a time. Full personnel safety equipment must be used at all times. Safety Important We recommend that all Multideck profiles are installed with the appropriate safety considerations. Following full risk assessment. Safety nets are a recognised solution for most cases. Handling Hazards Multideck may have a residual protective coating when delivered and should be handled with care. See BSC HS Data Sheet 18. Eye Hazards Care should be taken when breaking the strapping around bundles. Eye protectors conforming to the latest British Standard should always be worn. Protective Clothing To prevent laceration of skin, contamination by oil and risks to eyes and hands, protective overalls, gloves and eye protection should be worn at all times. 84

85 Sitework Multideck Weights Multideck 50-V2 Self Weight Gauge (kg/m 2 ) 0.9 mm mm mm Multideck 60-V2 Self Weight Gauge (kg/m 2 ) 0.9 mm mm mm mm Multideck 80-V2 Self Weight Gauge (kg/m 2 ) 1.0mm mm mm Multideck 50-V2 Tape ends to avoid excessive grout loss Multideck 60-V2 and 80-V2 End closure piece to prevent excessive grout loss Multideck 146 End closure piece Multideck 146 Self Weight Gauge (kg/m 2 ) 1.2 mm mm 24.3 Tape overlap ends to prevent excessive grout loss Sitework Matthew Boulton College, Birmingham, UK Photo Courtesy of MSW (UK) Ltd. 85

86 Sitework Pack ID These should be read in conjunction with the customers identification requirements. All Multideck bundles are marked to correspond with the customers identification requirements. Identification includes floor location, grid location, deck length, gauge and direction of lay. Where possible, bundles should be lifted from the transport and placed on the support frame ready for fixing. Packing labels and plans for Multideck are designed to make life easier on site. Direction of Lay Position pack at indicated position. Orientate the pack so that the direction of lay strip faces the direction indicated on the deck layout drawing. Pack ID Completed deck layout from layout drawing opposite 86

87 Example of Typical Layout Drawing (normally provided by deck fixer) Sitework Plan Key No. of Studs along beam Direction of lay Position of pack on steelwork 87

88 Sitework Primary fixing of the Multideck Prior to laying the Multideck the supports should be inspected to ensure that they are sound and suitable for the purpose. Engineers and contractors are advised to consult the SCI P300, MCRMA Technical Paper 13 Composite Slabs and beams using steel decking: Best practice for design and construction. And the BCSA code of practice for Metal Decking and Stud Welding. Multideck sheets must be laid and securely fixed to the support structure using primary fixings through the trough of the Mutlideck to avoid dislodgment or damage prior to and during the pour of the concrete. There are a number of fixing types that may be employed to secure the Multideck to the supporting structure, but, in general shot-fired fixings are both fast and economical. Where the Multideck will subsequently be through deck stud welded a fixing size and specification can be chosen to support the temporary load case only. Typical fixings would be Spit SDK9, Hilti X-U 15 or similar. The suitability for use on a project for any fixing type must be checked with the fixing supplier. If through deck stud welding is not being used the fixings should be sized by the engineer to suit the support beam restraint requirements both in the temporary and permanent load cases. The fixing manufactures should be consulted for guidance on the suitability and application of the fixing types. A A A (A) Fixings on both sides of butt joint A Typical fixings to consider are Hilti X-ENP-19, Spit SBR14, Spit HSBR14 or similar. The restraint requirements for steel beams can be obtained from the structural design standard used - for example BS5950 Part 3 section 3.1: Appendix A.2.3 Where Multideck is supported on concrete beams or masonry, shot fired fixings may still be employed or use Spit Tapcon concrete screws or the Hilti HUS (Hilti Universal Screw). See manufactures literature for guidance. For fixing to other materials and for further information contact the fixing manufacturer. Minimum fixing numbers for Multideck More fixings may be required if they are solely providing the restraint to the support beam MD50 V2 Every sheet must have two fixings at the panel ends, and two fixings at any internal supports. Fixings must be placed one in a trough. MD60 V2 and MD80-V2 Every sheet must have one fixing in each trough at the Multideck ends, and one fixing in the lap trough at any internal supports of that Multideck sheet. MD146 Every sheet must have one fixing in each trough at the panel ends, and one fixing in the lap trough at any internal supports. MD146 is normally used single span. Side lap Fixings Self drill self tapping screws are generally used in the side lap joints to control grout loss. MD50 V2 Side lap fixings are not normally required MD60 V2 and MD80-V2 Fixings at mid span are required. For spans above 3.0m additional fixings at 1.5m maximum spacing are required. MD146 Fixings at max spacing of 1.5m long the side lap. Butt joint on beam B (B) Intermediate fixings at lap only Multideck 50-V2 (A) = 500mm Max. Multideck 60-V2 (A) = 323mm Multideck 80-V2 (A) = 300mm Multideck 146 (A) = 530mm Max. Intermediate beam A A A A (A) Fixings 88 Edge beam

89 89 Sitework

90 Sitework Multideck 50-V2 / 60-V2 / 80-V2 Shear Studs Shear studs Where the supporting beam is engineered to be composite with the slab, shear connection is required between the steel beam and the concrete. This shear connection takes the form of headed studs which can be through deck stud welded to the top flange of the beam on site. Or if the deck is used in single span lengths the studs can be welded directly to the top of the beam in the fabrication shop. Use of the deck single span has serious cost issues for the slab so the use of double span deck lengths is the norm. Shear stud sizes and lengths Shear studs for through deck welding are 19mm diameter headed studs of varying lengths. The material is low carbon steel with a minimum yield strength of 350N/mm 2 and a minimum ultimate tensile strength of 450N/mm 2. The length of shear studs is given as the length after welding LAW and for Multideck the shear stud should extend not less than 35mm over the shoulder of the deck i.e. Multideck 50-V2 use standard stud length of 95mm LAW Multideck 60-V2 use standard stud length of 95mm LAW Multideck 80-V2 use standard stud length of 120mm LAW Steel beam support The flange thickness of the underlying support beam should not be less than 0.4 x the stud diameter or 7.6mm for the 19 diameter stud. The top flange of the steel beam must be unpainted if studs are to be successfully through deck welded The flange of the supporting beam must be of sufficient width where shear studs are provided in pairs see the diagram on page 91 for dimensions. Concrete cover to studs The concrete cover over the stud should not be less than 15mm. If the concrete is required to protect the connector against corrosion it should not be less than 20mm Stud strengths Where shear studs are used to provide composite beam action the stud strength in the concrete can be calculated to BS5950 part 3 Section 3.1 using the Multideck geometry Where the concrete is reinforced with Dramix Steel fibres the shear stud strengths calculated from BS5950 part 3 section 3.1 may be used as they are conservative or use the design guide supplied by Bekaert. For the MD146 deck the stud strength values see page 92 or contact Structural Products Technical Department. Stud welding equipment Welding equipment should be from a reputable manufacturer with a minimum of 200KVA for a diesel generator or mains power at 415V 3 phase fused at 100A per phase. Adequate earth connection is required if through deck welds are to be made. 90

91 Stud layout geometry The following data is intended to be used only as a guide. Final design criteria are the responsibility of the design agency and / or a qualified design engineer. 1) The spacing of the studs should not be less than 95mm in the direction of the shear force or diagonal dimension 76mm transverse to the direction of the shear force and when studs are in line 57mm transverse to the direction of the shear force when studs are in a diagonal pattern 2) The longitudinal spacing of the studs should not exceed the lesser of 600mm or 4 x the slab depth. 3) The distance between the edge of a stud and the edge of the steel beam flange should not be less than 20mm. 4) Where studs are required along a beam and the deck is transverse to the beam the studs must be spaced to suit the location of the deck troughs. 5) Where there is a Multideck joint over the supporting beam and one stud per trough. The studs should be through deck welded in alternate troughs on each deck. So that each deck end in anchored by studs in alternate troughs. Stud Positioning Multideck 50-V2 Pre welded studs Shear studs can be welded directly to the top flange in the fabrication shop but this requires that the Multideck is used in single span lengths. With pre welded studs all of the beam can be protected against corrosion. However, use of the deck single span has serious cost issues for the slab so the use of double span deck lengths is the norm. The position of the shear studs along the beam should be laid out to line through with the troughs in the deck transverse to the beam span. Stud layouts and beam flange size should be considered carefully to ensure there is a minimum bearing of 50mm for the deck and that the practicalities of placing packs of deck safely and laying out the deck are taken account of. Other forms of shear connector Different shear connectors can be used to make the shear joint between the steel beam and the concrete. Mechanical brackets using shot fired pins to anchor to the steel beam are available but generally have a much lower shear capacity than that of through deck welded studs. Stud Positioning Multideck 60-V2 / 80-V2 Sitework One shear stud per trough Pairs of shear studs per trough in staggered pattern < l 76mm < l 57mm 20mm min < l 95mm 20mm min 91

92 Sitework Multideck 146 Shear Studs Through Deck Stud Welding Multideck 146 is available in gauges 1.2 and 1.5mm and all gauges can be through deck stud welded to suitable supporting beams. Shear studs are 19mm diameter headed shear studs of low carbon steel, with a minimum yield point of 350N/mm 2 and an ultimate tensile strength of 450N/mm 2. For the Multideck 146 the length of shear stud is 200mm or 195mm LAW and 19mm diameter. The stud capacity for 195mm LAW 19mm diameter studs used with Multideck 146 and 25/30* concrete is: One stud Prd = 28.2 kn each stud Two studs Prd = 19.6 kn each stud Pair of studs must be at least 76mm apart in the transverse direction hence, the smallest flange width for two studs is 135mm. Multideck 146 with studs placed in every trough provides minimum spacing of 265mm. Where single studs per trough are used and the deck is single span, the stud placement should be staggered in alternate troughs on each deck. *For other concrete strengths contact Kingspan Structural Technical Department. Prefixed to Beams Multideck 146 has been optimised for single span performance so is ideal for use with beams that have the shear studs placed in the fabrication shop, avoiding or vastly reducing the need to weld on-site. While the Multideck 146 is generally used with 19mm diameter studs, it can equally be used with other types of shear attachment. Stud layout should be placed carefully to ensure there is a minimum bearing of 50mm and that the practicalities of placing packs of deck and laying out the deck are taken account of. Stud Positioning Multideck 146 Single Stud per Trough at Butt Joint Pairs of Shear Studs per Trough 20mm min 20mm min 20mm min < l 76mm 135mm min Flange Width Note: Centre line of studs must be a Minimum of 33mm from end of deck. Alternate Detail Pairs of Shear Studs per Trough staggered pattern at overlap < l 76mm 20mm min < l 57mm < l 95mm 92

93 Sitework Formation of Holes in Multideck Floor Slabs The following empirical rules are based on recommendations as given in the Concrete Society report on standard details and the Steel Construction Institute publication Good Practice in Composite Floor Construction. Structural Limitations Where the slab is supporting uniformly distributed loads the following rules may be applied. If concentrated or line loads exist adjacent to holes a special analysis may be required. 2. Holes up to 300mm square will not require additional reinforcement or trimming beams. 3. Holes over 300mm square up to 500mm square will require the following additional reinforcement if trimming support beams are not provided. a. One T 20 bar in each trough either side of the hole (or multiple smaller bars giving equivalent area). Timber shutter Holes should be formed after the slab is cast, shutters being used to make a void in the concrete. 1. No hole should be closer than its width to an unsupported edge. 2. The maximum width of hole measured transversely to the span of the slab should not be greater than 700mm without additional trimming support beams. 3. In any 4m width of slab measured transversely to the span of the slab, not more than 1/4 of the slab width should be removed by all holes in the span under consideration. For slabs less than 4m wide the permissible width of holes should be reduced proportionately. 4. The length of hole measured parallel to the slab span should not be greater than 1/4 of the span without provision of trimming support beams. 5. When the distance between holes is less than 1 1/2 times the width of the largest opening, the group of holes should be considered as a single hole with an effective length of width taken as the perimeter of the group. The following information is for guidance only. The design and detailing of additional trimming reinforcement around voids is the responsibility of the engineer. Construction Details 1. Holes not trimmed by supporting beams should be boxed out with the formwork prior to concreting and the hole in the deck should not be cut until the concrete has achieved at least 75% of its design strength. Dense polystyrene blocks b. One T 20 bar across each end of the hole on the deck transverse to the slab span (or multiple smaller bars giving equivalent area). c. Two additional high yield bars of the same diameter as the mesh parallel to each edge of the hole at mesh level. All reinforcing bars should extend an anchorage length beyond the edges of the hole. 4. Holes over 500mm square up to 700mm square will require the following additional reinforcement trimming if support beams are not provided. a. One T 25 bar in each trough either side of the hole (or multiple smaller bars giving the equivalent area). b. One T 25 bar across each end of the hole on the deck transverse to the span (or multiple smaller bars giving equivalent area). c. Where the slab thickness is less than 200mm, provide one T 25 bar diagonally across each corner of the opening between the bottom transverse bars and the mesh (or multiple smaller bars giving equivalent area). d. Where the slab thickness is greater than or equal to 200mm provide one T 25 bar diagonally across each corner of the opening both immediately above the bottom transverse bars and also under the top mesh (or multiple smaller bars giving equivalent area). e. Three additional high yield bars of the same diameter as the mesh across each edge of the hole at mesh level. 5. Holes over 700mm square will require trimming support beams around the opening. Sitework 93

94 Sitework Multideck 50-V2 / 60-V2 / 80-V2 Temporary Supports Do I Need to Prop? Decking is usually designed and sized to be self supporting during the construction stage where the deck alone supports the weight of the wet concrete and construction loads. Temporary props are only required where the actual deck support centres exceed the construction stage performance of the deck as shown in the tables on page 95. There may be small areas of floor in a building where propping is required even though the rest of the floor remains un-propped typically these areas that require props include:- Decking bays where infill is required after the removal of the tower crane. Often the deck will be in single span lengths. Lobby areas around lift shafts where the deck may have to be laid single span to fit in with the layout. If longer spans and / or thicker slab than those shown in the tables on page 97 are required the Multideck 146 should be propped at mid span. Alternatively use the Multideck software to confirm the requirements. Other requirements for props Props may also be required to support side and end trims where the outstand is greater than the limits shown in this literature. Where the end of the deck abuts in-situ concrete and there is no permanent support for the end of the deck. Or where the deck cantilevers beyond the support for a distance exceeding the deck capacity shown in this literature. Layout and location of props The deck layout drawing should show the location and extent of props to the deck. If there is any doubt on the requirement for props consult the span tables on page 95 or use the Multideck software. Normally props are positioned at mid span (one line of props) or third points (two lines of props) within the span. Props normally consist of lengths of timber bearer and / or steel runners placed directly below the deck and supported on adjustable steel tubes (Acrows). The width of the timber and or steel plates should provide sufficient bearing area - as a guide that would be between 75 and 100mm. The decking sheets must never be cut at the location of the temporary support nor should the deck be fixed to the temporary support. The bearer must be continuous and extend for the width of the bay. Discrete props and packs should not be used. The bearer should be supported by Acrows at approx 1.0m c/c spaced equally along the line of the prop and be suitably braced. All props must be adequately founded to support the loads that will be applied. Where props are being used to facilitate large spans it may be necessary to have the props in place before laying the deck to facilitate a safe working environment. A typical temporary support is shown in the detail below. Props in this arrangement are generally placed at 1.0m c/c according to the designers requirements. The design and provision of props is the responsibility of others. Note: We recommend that temporary supports are braced in both directions for safety. 94

95 Sitework Multideck 50-V2 / 60-V2 / 80-V2 Temporary Supports Use the tables below to determine if props are required for a given condition. If the span shown in the table is greater than the actual span on site, no temporary supports are needed. If the span shown in the table is less than your actual span, temporary supports are required. Normal Weight Concrete Multideck 50-V2 Multideck 60-V2 Multideck 80-V2 Span Type Slab Depth Gauge (mm) Gauge (mm) Gauge (mm) (Support Condition) (mm) Lightweight Concrete Sitework Multideck 50-V2 Multideck 60-V2 Multideck 80-V2 Span Type Slab Depth Gauge (mm) Gauge (mm) Gauge (mm) (Support Condition) (mm) Notes: 1. Temporary supports should remain in place until the concrete has achieved 75% of its 28 day cube strength often available after 7 days. Where crack control is essential, props should not be removed until the concrete has achieved its specified design strength. 2. Span values are based on 100mm minimum support widths. 95

96 Sitework Multideck 146 Temporary Supports Do I Need to Prop? Multideck 146 is designed as single span with a capacity of 6.0m plus and as such does not normally require temporary supports during the construction stage. There may be cases where longer spans are required and the deck can be propped during the construction stage. Load tables are shown for the Multideck mm gauge propped construction. The requirement for temporary support must be clearly shown and identified on the drawings of the deck layout. Provision of props to deck, that was not intended to be propped, should be checked with the engineer as the composite stage capacity can be reduced. If temporary supports are required, they should be provided at mid span of the Multideck 146 so that the span either side of the prop is equal. The decking sheets must never be cut at the location of temporary support and the deck should not be fixed to the temporary support. Temporary supports should continuously support the underside of the deck and are normally lengths of timber or steel beams supported by adjustable steel tubes ( Acrows ). The width of the temporary support on which the deck sits should not be less than 100mm and should extend for the full width of the bay of deck and be suitably braced. Discrete props and packs should not be used. It may be necessary to put the temporary supports in place prior to laying of the deck. The support of the prop at the base must always be considered for strength and stability, taking account of the weight of wet concrete and construction loads. The design and provision of props is the responsibility of others. A typical temporary support is shown in detail below. Note: We recommend that temporary supports are braced in both directions for safety. 96

97 Sitework Multideck 146 Temporary Supports Use the tables below to determine if props are required for a given condition. If the span shown in the table is less than the actual span temporary supports are required. Normal Weight Concrete Maximum spans without props Span Type Slab Depth Gauge (mm) (Support Condition) (mm) Lightweight Concrete Maximum spans without props Span Type Slab Depth Gauge (mm) (Support Condition) (mm) Sitework Notes: Temporary supports should remain in place until the concrete has achieved 75% of the 28 day cube strength which is often available after 7 days. Where crack control is essential props should not be removed until the concrete has achieved its specified design strength. Access equipment should not be operated while the deck is propped. 97

98 Concrete Kingspan supply the Multideck product for use with in-situ placed concrete to create a composite concrete slab. As such it is important that the concrete and its placement meet the minimum requirements to achieve a quality product. Concrete should be specified, supplied and assessed in accordance with the requirements of BS8500. Minimum concrete strength The load tables in this literature assume a minimum concrete strength of C25/30 with a minimum cube strength of 30N/mm 2 at 28 days. The Multideck design software allows designs with concrete cube strengths from 25 to 50N/mm 2 with a default of 30N/mm 2. The concrete supplied on site must meet or exceed the minimum design values used. Consistence Concrete is normally pumped on to the deck and it should have a suitable consistency to allow placement without heaping of the concrete on the deck. The consistency of the concrete should be specified by the concrete contractor. Typical values are S2 or S3. The use of Bekaert s Dramix steel fibre in the concrete will require consideration of the mix design to create a suitable consistency the concrete contractor should seek guidance from Bekaert if they do not have previous experience in the use of Dramix steel fibre reinforced concrete. Self Compacting Concrete May be used with Multideck products advice should be sought from the ready mix supplier as to suitable grades and slump flow test values to be used. Care must be taken to account for the deflection of the deck and supporting beams resulting in a thicker slab, as the self compacting concrete will flow to a level. The additional concrete depth should be taken in to account in the construction stage design of the Multideck. Concrete placement Concrete can be conveniently placed by pump either mobile or for very high multi-story buildings by fixed pumps. Where the pump line is laid across the deck its weight should be adequately dispersed by spreaders to avoid damaging the deck. Ideally the concrete should be discharged on to the deck at a beam support position with the concrete being moved and spread out as quickly as possible to avoid heaping which may overload the Multideck. The concrete discharge pipe should be held horizontally so that the concrete is not discharged vertically and the height of discharge should be kept to a minimum to avoid damage to the deck by the impact load from the wet concrete. Further Guidance For further guidance on concrete placement, and composite slabs on Multideck see The SCI / MCRMA publication 300 Composite Slabs and beams using steel decking. The good concrete guide No 5 Composite concrete slabs on steel decking. BCSA Code of Practice for Metal Decking and Stud Welding. 98

99 Estimating Concrete Volumes Multideck 50-V2 Multideck 60-V2 Multideck 80-V2 Slab Depth Concrete Volume Concrete Volume Concrete Volume (mm) (m 3 /m 2 ) (m 3 /m 2 ) (m 3 /m 2 ) Multideck 146 Slab Depth Concrete Volume (mm) (m 3 /m 2 ) Volumes of concrete shown are for the nominal slab depth as shown in the table. To take account of deck deflection an allowance of span mm / 285,000 = m 3 /m 2. Consideration should be given to the support deflection (beam) and an allowance included in the volume of concrete required. Multideck Design Software allows consideration of beam deflection. Day Joints Day joints in the concrete slab should be placed as close as possible to the butt joint in the Multideck over the support, but clear and leaving uncast any shear studs where the Multideck is supported on a steel beam. Keeping the shear studs clear from the day joint avoids the studs being preloaded when the other side of the slab is subsequently cast. Site constructed joint Preferred position of day joint Deck butt joint Concrete Where it is not possible to cast the day joint close to the Multideck butt joint no more than one third of the sheet should be left un-poured. Timber, foam or proprietary closures should be provided by the concrete contractor to fit the profile and form the day joint stop. If the slab is reinforced with Dramix Steel fibre additional continuity bar reinforcement should be provided at the day joint. Concrete Deck Permanent steel support 1/3 Span Max. Span 99

100 Concrete Reinforcement Concrete is a brittle material strong in compression but weak in tension and as such must be reinforced with a material that can provide tensile strength and ductility. The most common reinforcement material is steel. Multideck Primary reinforcement Where the slab is designed as composite it is the Multideck that provides all of the tensile reinforcement for the slab. The mechanical shear keys formed in to the webs and ribs of the Multideck product lock the concrete and deck together. Performance values are derived from testing. Mesh reinforcement Mesh reinforcement is required to control cracking that can occur in the concrete due to shrinkage or other induced tensile stresses in the concrete. The composite slab loading case is generally designed as a single span and where the concrete is continuous a light mesh reinforcement is provided over the supports to control possible cracking. BS EN 5950 part 4 suggest that the minimum mash area is a 0.1% of the cross sectional area of the concrete slab at the support. Top mesh should be placed in a zone of 15 to 40mm from the top surface of the slab. Additional mesh reinforcement may be needed at positions of concentrated loads i.e. point or line loading, BS EN 5950 provides guidance on minimum values to adopt. These secondary reinforcements are normally placed on the top of the deck so deeper slabs may require two layers of reinforcement in specific areas. The engineer should consider increasing the mesh area where: The slab is propped during construction The size of any cracks in the slab need to be controlled Brittle finishes are applied to the slab surface Moving wheel or point loads are applied to the slab Mesh sheets must be over lapped, use of flying ends make overlapping easier and avoids build up of the mesh thickness at laps. The mesh should be supported on a suitable mesh stools to maintain the required position during the concrete pour. Bar reinforcement Bar reinforcement is some times required with Multideck composite slabs. Where the fire period combined with the applied loading exceeds the slab performance using mesh, then, addition bar reinforcement can be used to provide a solution. The Multideck design software offers a full range of A mesh and bar reinforcement combinations. MD146 long spanning deck requires a minimum of one 16 dia. bar reinforcement per trough for all load cases. Bar reinforcement should be supported on suitable bar stools or wired from the mesh so that the bar is located in the correct height and position in the slab as shown in the design. U bars are required around shear studs on composite edge beams to avoid splitting of the concrete at the composite edge beam. Dramix Steel fibres The use of Dramix steel fibres can replace mesh reinforcement in Multideck 50-V2, 60-V2 and 80-V2, composite slabs providing the structural performance documented in this literature. See specifically page 101 to 103 and the general section for each deck. 100

101 Concrete Kingspan Multideck and Bekaert Composite Slab Dramix Steel Fibre Concrete, has been used worldwide in groundworks, for many years. Following extensive test work and analysis by Kingspan Structural Products, Bekaert and the Steel Construction Institute, it is now available for multi-storey applications. Dramix steel fibres have been proven to achieve a full fire performance, see pages (Multideck 50-V2), pages (Multideck 60-V2) and pages (Multideck 80-V2). The use of a Dramix Steel Fibre reinforced Concrete slab provides a pre-reinforced concrete slab. Dramix Steel Fibres can be used in the Multideck 50, 60 and 80 Benefits of Multideck with Dramix Steel Fibres:- Pre-reinforced concrete eliminates mesh Savings include:- Time on site No design No drawing No scheduling No transportation No lifting / off-loading No laying Reduction in crane hire Other benefits include:- Earlier project completion Proven 1 hour, 1.5 and 2.0 hour fire rating Structural design information developed by the Steel Construction Institute (SCI) Full depth reinforcement offers excellent crack control Design advice and assistance Minimises site handling Reduces site congestion Minimises crane lifts Reduces tripping hazards 1. Steel fibres added to hopper 3. Concrete pumped into position 2. Fibres mix perfectly with concrete 4. Mixture spread onto deck Dramix eliminates the need to buy, transport, store, crane and fix mesh. Concrete 5. No mesh means no tripping hazard 6. Mixture floated off 7. Floating provides a smooth finish 8. Floor completed in double quick time 101

102 Concrete Kingspan Multideck and Bekaert Composite Slab Multideck 50-V2 Fire performance for 1, 1.5 and 2 hours. Multideck 50-V2 has been tested with the new Dramix steel fibres. Multideck 60-V2 Fire performance for 1, 1.5 and 2 hours. Multideck 60-V2 has been tested with the new Dramix steel fibres. Multideck 80-V2 Fire performance for 1, 1.5 and 2 hours. Multideck 80-V2 has been tested with the new Dramix steel fibres. 102

103 Concrete Kingspan Multideck and Bekaert Composite Slab Dramix Steel Fibres Dramix Steel Fibres are made from prime quality hard-drawn steel-wire to ensure high tensile strength and close tolerances. Dramix Steel Fibres are added to the concrete during mixing. The gluing of the fibres into bundles guarantees quick and easy mixing with perfectly homogeneous distribution. The hooked ends slowly deforms during pull-out and is generally considered as the best form of anchorage. Dramix steel fibres are manufactured in accordance with BS EN ISO 9001:2008. Shear Strength The shear resistance of Dramix concrete reinforced with a dosage of 20kg/m 3 RC-80/60-BN / 30kg/m 3 RC-65/60-BN exceeds that of mesh reinforced concrete. This means that codified checks for longitudinal shear can be adopted and will not penalise fibre reinforced slabs. For 30kg/m 3 the area of fibres crossing a shear plane may be taken as 0.37% of the concrete area. Shear Stud Capacities The SCI has established the following design information relating to shear stud strengths from the test data: In order to design studs embedded in fibre reinforced concrete with a dosage of 20kg/m 3 of Dramix RC-80/60-BN or 30kg/m 3 of Dramix RC-65/60-BN fibres in accordance with BS :1990 no shear stud strength reduction factor is applicable. In order to design studs embedded in fibre reinforced concrete with a dosage of 20 kg/m 3 of Dramix RC-80/60- BN or 30 kg/m 3 of Dramix RC-65/60-BN fibres in accordance with BS DD ENV 1994 Part 2: 2001 no shear stud strength reduction factor is applicable. Recommendations When Mixing 1. General Preferably use a central batching plant mixer when adding Dramix Steel Fibres into concrete. A continuous grading is preferred. Mix until all glued fibres are separated into individual fibres. Fibres don t increase mixing time significantly. If special cements or admixtures are used, a preliminary test is recommended. 2. Fibre Addition 2.1. In batching plant mixer. Never add fibres as first component in the mixer Fibres can be introduced together with sand and aggregates, or can be added in freshly mixed concrete Only for drummixer: unopened degradable bags can be thrown directly in the mixer 2.2. Truckmixer Add Dramix as the final component into the back of the mixer truck Run mixer at drum speed: 12-18rpm Adjust slump to a min. of 12cm (preferably with water reducing agents or high water reducing agents) Add fibres with maximum speed of 40kg/min Optional equipment: belt-hoist elevator After adding the fibres, continue mixing at highest speed for 4-5 min 2.3. Automatic dosing Fibres can be dosed from bulk at rates up to 3.5kg/sec with a specially developed dosing equipment Should you require further information please contact Bekaert for: Composite slab design Dramix Steel Fibres data sheet RC-80/60-BN / RC-65/60-BN Fire test report Composite slab load-span tables Composite slab fire resistance tables SCI reports Technical Support Technical support in the development of the Dramix composite floor load-span tables was provided by the SCI. Fire Test Report Fire resistance test in accordance with BS :1987 Clause 7 on a load bearing Dramix composite floor and Kingspan Multideck. Information is available from Bekaert on request. Bekaert Building Products Ltd PO Box 119 Shepcote Lane Sheffield S9 1TY Tel: Fax: Visit our website Concrete 103

104 Estimating and Ordering Quotations Kingspan Structural Products can provide quotations for the supply of Multideck on receipt of clients structural detail drawings and / or specifications with bills of quantities. Delivery Delivery of Multideck is made direct to site and phased in accordance with clients erection programme whenever possible. Delivery is made using Kingspan's own transport for off loading by others. Packing Multideck is supplied and packed in accordance with users requirements in bundles of up to 1.5 tonnes banded with steel straps on timber packers at regular intervals to prevent damage during transport. Availability Kingspan Multideck is usually available on a 7 day delivery on receipt of cutting list, however please check before ordering as this can vary with demand. Contact Please contact Kingspan Sales Department on: Tel or Fax [email protected]. Rake Cutting Pre-delivery cutting of sections is available. Please contact our Sales Department for details. 104

105 Ordering and Detailing Order Forms To simplify manual detailing and reduce the possibility of omissions we strongly advise the use of Kingspan order forms. This will ensure smooth processing of you order. Examples are shown full size (see pages ). These can be photocopied on a light setting to remove the example and used as actual order forms. Please state all dimensions in millimetres and use one sheet per section depth when ordering several section sizes together. Estimating & Ordering 105

106 106

107 Accessories Slab Edge Trim 1.2mm, 2mm and 2.7mm galv steel in 3m lengths for cutting on site. Supplied by Kingspan Structural Products To suit slab thickness Variable Edge Trim Restraint Strap 0.9mm galvanised steel 40mm wide in 3m lengths for cutting on site. Supplied by Kingspan Structural Products. Closures End closure Pressed steel supplied by Kingspan Structural Products. Length 215mm B A Dimension A 87mm (for MD60-V2) 67mm (for MD80-V2) 100mm (for MD146) Dimension B 67mm (for MD60-V2) 87mm (for MD80-V2) 158mm (for MD146) Side closure Profile (A) 1.2mm galvanised steel in 3m lengths. Supplied by Kingspan Structural Products. MD50-V2, MD60-V2, MD80-V2 180mm mm MD146 30mm 180mm 40mm 20mm Shear Stud Kingspan recommend the use of Nelson studs. These are normally supplied by the fixing contractor. All shear studs should be low carbon steel with a minimum yield strength of 350 N/mm 2 and an ultimate tensile strength of 450 N/mm 2 minimum. 19mm MD60-V2 95mm LAW MD80-V2 120mm LAW MD50-V2 95mm LAW MD mm LAW Photo Courtesy of MSW (UK) Ltd. Accessories 107

108 Accessories Multideck 50-V2 Suspension Systems A suspension system is available for Multideck 50-V2 profiles. The Kingspan Re-entrant Multiwedge is a heavy duty suspension method for pipework, ducting, etc. and will carry loads up to 150kg (SWL). Re-Entrant Wedge Material: Malleable iron to BS 6681 : Finish: Electro zinc plated to BS 1706 : 1990 Grade Fe/Zn 5c 1A. Multiwedge 2 and Re-entrant Multiwedge available from: Lindapter, Bradford, West Yorkshire. Tel: Fax: General enquiries: [email protected] Technical support: [email protected] Web: For Multiwedge 2 capacities and installation details see page

109 Accessories Multideck 60-V2 / 80-V2 Suspension Systems Multiwedge 2 Material: Malleable iron to BS 6681: Finish: Electro zinc plated to BS 1706: 1990 Grade Fe/Zn 5c 1A. Packaging: The Multiwedge and V-nut are packed as complete units of 50 per bag. Multiwedge 2 Installation 1. Position Multinut and bracket as shown. Hold assembly between thumb and forefinger. Position one leg of bracket into re-entrant channel then squeeze and click other leg into channel for snap fit. Move assembly to desired position. Grip Grip 2. Push and turn Multinut clockwise into channel walls. Continue until in position (A). (A) 3. Once in position tighten main M10 nut to a torque of 10Nm. Load: 150kg (SWL). Accessories 109

110 Accessories Multideck 60-V2 / 80-V2 Uni-Wedge Universal Clamp Uni-Wedge One fixing suits seven most popular decking profiles Allows for manufacturing tolerances in the deck profile Single piece construction Separate fixing screw to ease final adjustment M06, M08 and M10 threaded fixing holes Requires no site power or skilled labour Tested at the British Board of Agrément Material: SG (Ductile) Iron to BS EN 1563 Grade EN-GJS Finish: Zinc Plated to BS EN 12329:2000 Grade Fe//Zn5//A (Clear). Uni-Wedge provides a solution to fix building services equipment without penetrating the decking membrane. This fixing provides a guaranteed safe working load and simply requires a standard hexagon key and spanner with no requirement for power, special tools or highly skilled labour. Uni-Wedge has a unique body style that allows it to fix to seven decking profiles, making it easy to use and specify. The specific type of decking is not always easy to identify on site and has caused installers problems when trying to acquire the correct fixing to use, but Uni-Wedge provides the ideal solution (see table below). Uni-Wedge has been designed for the end user to ensure that whatever the situation the right connection can be made as quickly as possible. Uni-Wedge has a fixing screw that is assembled in the body and provides a positive location in the decking re-entrant channel. This screw is assembled as standard in position 1 but can easily be removed and placed in to position 2 to suit the other decking profiles, see table below: 12mm M06 31mm M08 M10 44mm Decking Screw Tensile SWL (kn) Use 4mm Hexagon key to Type Position (3 to 1 Factor of Safety) tighten grubscrew Multideck 60-V2 / 80-V IMPORTANT! Only use one threaded bar per fixing. The decking must not be damaged and have a fully formed re-entrant channel. Ensure the cone point grub screw is fully engaged in to the corner of the re-entrant channel. Do not screw the threaded bar any further in than the top surface of the fixing. Ensure the fixing is a minimum 300mm from any edges of the decking. Uniwedge is manufactured by: Beamclamp Tel: Fax: [email protected] Web: For Multiwedge capacities and installation details see page

111 Accessories Multideck 60-V2 / 80-V2 Uni-Wedge Universal Clamp Uni-Wedge Installation Position 1 Position 2 1. Select the correct position for the grub screw to suit the decking profile as shown above position 1 or Insert Uni-Wedge in to the re-entrant channel of the deck. Ensure the point of the grub screw is not exposed at the top of the hole as this will stop Uni-Wedge fitting. 3. Tighten the grub screw to secure the fixing. We recommend a tightening torque of 8Nm to achieve a guaranteed SWL. 4. Once the grub screw is secured one of the M06, M08 or M10 threaded holes can be fixed to. This may be threaded bar, eyebolts, J-bolts or any other threaded items used for suspending building services. We always recommend the threaded item is locked in to position using a lock nut to the underside of Uni-Wedge. Uni-Wedge Applications Strut support for cable tray Suspended ceiling detail using hook bolts Typical pipe supports Accessories 111

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113 References BS 476: Part Part Part Clause 7 BS 1449: Part 1 BS 1494: Part BS 1881: Part (1988) Part (1988) BS 3963: 1974 (1980) BS 4078: Part Part BS 4174: 1972 BS 4449: 1997 BS 4483: 1998 BS 5328: Parts 1-4 BS 5247: 1976 BS 5950: Part 3 Section 1:1990 Part Part 6 Part BS 6100: Part 1 Part 1.3 Part Part 6 Part 6.1 Part 6.2 Part 6.3 BS 6399: Part BS 6687: 1986 BS 6830: 1987 BS 8000: Part BS 8110: Part Part BS 8204: Part Part BS EN ISO 9001:2008 BS EN 10002: Part BS EN 10143: 1993 BS EN 10147: 2000 BS DD ENV 1994 Part 2:2001 Fire tests. Fire tests on building materials and structures. Test methods and criteria for the fire resistance of elements of building construction. Fire tests on building materials and structures. Methods for determination of the fire resistance of loadbearing elements of construction. Specification for carbon and carbon-manganese plate, sheet and strip. Fixing accessories for building purposes sheet, roof and wall coverings. Protection of iron and steel by aluminium and zinc against atmospheric corrosion. Protection of iron and steel against corrosion and oxidisation at elevated temperatures. Method for testing the mixing performance of concrete mixers. Cartridge Tools. Self-tapping screws and metallic drive screws. Specification for carbon steel bars for the reinforcement of concrete. Specification for steel fabric for the reinforcement of concrete. Methods for specifying concrete, including ready-mixed concrete. Code of practice for performance and loading criteria for profiled sheeting in building. Design in composite construction. Structural use of steelwork in building. Design in composite construction. Code of practice for design of simple and continuous composite beams. Code of Practice for design of floors with profiled steel sheeting. Code of practice for design of light gauge profiled sheeting. Code of practice for fire resistant design. Glossary of building and civil engineering terms. General and miscellaneous. Parts of construction works. Floors and ceilings. Concrete and plaster. Binders. Concrete. Aggregates. Code of practice for dead and imposed loads. Specification for electrolytically zinc coated steel flat rolled products. Specification for continuously hot-dip aluminium / zinc alloy coated cold rolled carbon steel flat products. Workmanship on building sites concrete work. Structural use of concrete. Code of practice for design and construction. Code of practice for special circumstances. Structural use of concrete. Code of practice for concrete bases and screeds to receive in-situ flooring. Code of practice for concrete wearing surfaces. Quality management systems. Requirements. Method for tensile testing of metals. Continuously hot-dip metal coated steel sheet and strip tolerances on dimensions and shape. Continuously hot-dip zinc coated structural steel sheet and strip technical deliver conditions. Eurocode 4. Design of composite steel and concrete structures. Composite bridges. 113 References

114 Sheet 1 of 2 MULTIDECK REF MD50090 Multideck 50-V2 / 60-V2 / 80-V2 Order Form A CUSTOMER SUPERMARKET 123/94 12/12/10 NAME PROJECT ORDER NO. DELIVERY DATE W/C DELIVERY ADDRESS A BUILDING, A ROAD, A STREET, A TOWN, POSTCODE 600mm 1000mm 900mm MD50-V2 Maximum 16 sheets per pack Minimum 10 sheets per pack MD60-V2 Maximum 18 sheets per pack Minimum 10 sheets per pack MD80-V2 Maximum 16 sheets per pack Minimum 10 sheets per pack DECK TYPE GAUGE PACK REF. QUANTITY LENGTH MD50-V2 0.9 GF DECK TYPE GAUGE PACK REF. QUANTITY LENGTH PHOTOCOPY THIS SHEET ON A LIGHT SETTING TO REMOVE EXAMPLE

115 Sheet 2 of 2 Multideck 50-V2 / 60-V2 / 80-V2 Accessories Order Form A CUSTOMER SUPERMARKET 123/94 NAME PROJECT ORDER NO. DELIVERY DATE W/C DELIVERY ADDRESS 12/12/10 A BUILDING, A ROAD, A STREET, A TOWN, POSTCODE Slab Edge Trim Restraint Strap mm 45 D MARK QUANTITY STRAP mm L Supplied in 3.0m lengths Supplied in 3.0m lengths MARK D L GAUGE QUANTITY End Closure ST mm 0.9mm MARK QUANTITY CA mm Side Closure Profile (A) MARK QUANTITY mm 180mm 20mm CL 150 Supplied in 3.0m lengths PHOTOCOPY THIS SHEET ON A LIGHT SETTING TO REMOVE EXAMPLE

116 Sheet 1 of 2 MULTIDECK REF MD146 Multideck 146 Order Form A CUSTOMER SUPERMARKET 123/94 12/12/10 NAME PROJECT ORDER NO. DELIVERY DATE W/C DELIVERY ADDRESS A BUILDING, A ROAD, A STREET, A TOWN, POSTCODE 600mm MD146 Maximum 8 sheets per pack DECK TYPE GAUGE PACK REF. QUANTITY LENGTH MD GF DECK TYPE GAUGE PACK REF. QUANTITY LENGTH PHOTOCOPY THIS SHEET ON A LIGHT SETTING TO REMOVE EXAMPLE

117 Sheet 2 of 2 A CUSTOMER Multideck 146 Accessories Order Form SUPERMARKET 123/94 NAME PROJECT ORDER NO. DELIVERY DATE W/C DELIVERY ADDRESS A BUILDING, A ROAD, A STREET, A TOWN, POSTCODE 12/12/10 Slab Edge Trim Restraint Strap mm 45 D MARK QUANTITY STRAP mm L Supplied in 3.0m lengths Supplied in 3.0m lengths MARK D L GAUGE QUANTITY End Closure 146 ST mm 0.9mm MARK QUANTITY mm Side Closure 146 MARK QUANTITY 1.2mm 30mm mm 40mm 20mm Supplied in 3.0m lengths PHOTOCOPY THIS SHEET ON A LIGHT SETTING TO REMOVE EXAMPLE

118 Multideck Index Topic Page Accessories 107 British Standards 113 Concrete Requirements 98 Day Joints 99 Dramix Steel Fibres 101 Estimating and Ordering 104 Forming Holes 93 Kingspan Company 4 Minimum Bearing Surfaces 80 Topic Page Order Forms 114 Ordering and Detailing 105 Pack Identification 86 Primary Fixings 88 Propping 94 Shear Studs 90 Site Handling 84 Temporary Supports 95 Weights 85 Multideck 50-V2 Topic Page Dimensions 9 Embossments 9 End Detail 69 End Detail Cantilever 69 Features and Applications 8 Fire Performance 17 Intermediate Beam Change in Direction of Lay 72 Intermediate Beam Change in Direction of Lay with Ledger Angle 73 Intermediate Beam Detail 71 Load Tables Dramix Reinforced Normal Weight Concrete 20 Load Tables Dramix Reinforced Lightweight Concrete 22 Load Tables Lightweight Concrete 14 Topic Page Load Tables Lightweight Concrete hour fire rating 19 Load Tables Normal Weight Concrete 12 Load Tables Normal Weight Concrete hour fire rating 18 Maximum Edge Trim Cantilevers 68 Profile 9 Reinforcement 9 Section Properties 9 Side Detail 66 Side Detail Alternative 66 Side Detail with Cantilever 68 Sound Attenuation 22 Specification 9 Suspension Systems 108 Volumes and Weights 9 Multideck 60-V2 Topic Page Dimensions 25 Embossments 25 End Detail Cantilever 76 End Detail using End Closure 76 Features and Applications 24 Fire Performance 32 Intermediate Beam Change in Direction of Lay 77 Intermediate Beam Change in Direction of Lay with Ledger Angle 78 Intermediate Beam using Closure Trim 77 Load Tables Dramix Reinforced Normal Weight Concrete (30kg/m 3 RC-80/60-BN) 36 Load Tables Dramix Reinforced Normal Weight Concrete (20kg/m 3 RC-80/60-BN) 38 Load Tables Lightweight Concrete 30 Topic Page Load Tables Lightweight Concrete hour fire rating 34 Load Tables Normal Weight Concrete 28 Load Tables Normal Weight Concrete hour fire rating 33 Maximum Edge Trim Cantilevers 74 Profile 25 Reinforcement 25 Section Properties 25 Side Detail 74 Side Detail Cut to Width 75 Side Detail using Closure Trim 75 Sound Attenuation 41 Specification 25 Suspension Systems 109 Volumes and Weights

119 Multideck 80-V2 Topic Page Dimensions 43 Embossments 43 End Detail Cantilever 76 End Detail using End Closure 76 Features and Applications 42 Fire Performance 50 Intermediate Beam Change in Direction of Lay 77 Intermediate Beam Change in Direction of Lay with Ledger Angle 78 Intermediate Beam using Closure Trim 77 Load Tables Dramix Reinforced Normal Weight Concrete 52 Load Tables Lightweight Concrete 48 Load Tables Lightweight Concrete hour fire rating 51 Topic Page Load Tables Normal Weight Concrete 46 Load Tables Normal Weight Concrete hour fire rating 51 Maximum Edge Trim Cantilevers 74 Profile 43 Reinforcement 43 Section Properties 43 Side Detail 74 Side Detail Cut to Width 75 Side Detail using Closure Trim 75 Sound Attenuation 54 Specification 43 Suspension Systems 109 Volumes and Weights 43 Multideck 146 Topic Page Dimensions 57 Embossments 57 End Detail using End Closure 83 End Detal Multideck Cantilever 83 Features and Applications 56 Fire Performance 62 Load Tables (Notes) 59 Load Tables Lightweight Concrete 61 Load Tables Normal Weight Concrete 60 Load Tables Fire Resistance 63 Maximum Edge Trim Cantilevers 81 Profile 57 Reinforcement 58 Section Properties 57 Side Detail 81 Topic Page Side Detail using Closure Trim 82 Side Detail Multideck Cut to Width 82 Sound Attenuation 65 Specification 57 Temporary Supports 96 Volumes and Weights

120 Kingspan Structural Product Range Multibeam Technical Handbook Kingspan Structural Products produce a complete range of pre-engineered cold formed products for modern industrial and commercial building construction. Kingspan Toolkit Software The Toolkit series has become the leading cold rolled steel and floor decking design software in the industry and is now used by structural engineers in over 1000 practices in the UK. Includes Design of Purlins, Rails, Mezzanine Floors, Composite Floors, CAD Details and much more. Kingspan Structural Products Sherburn, Malton, North Yorkshire, YO17 8PQ, England Tel: Sales fax: Customer Services fax: Technical fax: [email protected] visit our website kingspanstructural.com or our group website kingspan.com Due to our continuing policy of development and improvement we reserve the right to alter and amend the specification as shown in this literature.