Fixing Systems for Precast Hollow Core Slabs 2012 / 01

Transcription

1 Fixing Systems for Precast Hollow Core Slabs 0 / 0

2 Introduction Introduction to Hollow Core Slabs: Hollow core slabs are a very common material made of precast concrete, steel and composite structures for use in retail, industrial, commercial building and car parks as well as in housing, educational and government projects. Technical Information: Hollow Core Floors are manufactured using a long line casting technique with automatic casting equipment which places high strength, low water/cement ratio concrete under a high degree of vibration and compaction. The section profile incorporates hollow cores to reduce self-weight without significant reduction in section stiffness. Reinforcement is by high tensile prestressing stranr wire which has an ultimate strength of more then times that of conventional high tensile reinforcement. The structural performance resulting from the combination of those featured produces a slab which is highly efficient and economic for any load/span situation. 00 mm Nominal width 00 mm Nominal width 00 mm Nominal width 00 mm thick 50 mm thick 00 mm thick 50 mm thick 00 mm thick 50 mm thick 400 mm thick 450 mm thick fischer fixings UK Ltd Whitely Road Hithercroft Industrial Estate Wallingford Oxfordshire OX0 9AT 6 January 0 For the attention of Mirka Valovicova Testing of Fischer Fixings in Bison Hollow Core Slabs We confirm that the tests as detailed in your document title Fixings Testing on Bison Hollow Core Slabs, were carrieut in our laboratory. The tests were carrieut on the soffit of a standard 50 mm deep slab, and the results are a true recorf the tests. Therefore, we can recommend that the fixings described are suitable for use with hollow core slabs, up to the safe working loads stated. Yours Faithfully For Bison Manufacturing Ltd Dr Kamel BENSALEM Chief Structural Engineer Bison letter of confirmation for product testing & subsequent approval

3 Chemical Fixings FIS V 60 S Resin FIS V Resin FIS S Static nozzle FIS H N anchor sleeve with net The fischer Injection system FIS V 60 S contains a styrene free, quick setting, high quality hybrid resin mortar, which is characterised by its universal suitability for many applications. It achieves maximum strength values in almost all building materials and anchors safely and without expansion pressure. The components are mixed together inside the static mixer. A simple change of the static mixer allows the cartridge to be reused after it has been opened. Advantages / Benefits With anchor sleeve FIS H N: Vertical perforated bricks, precast hollow core slabs, sandlime perforated bricks, hollow blocks, solid red bricks, sandlime solid bricks, pumice hollow planks, hollow filler block floor anther perforated bricks. Without anchor sleeve: Concrete, lightweight concrete, natural stone, solid red bricks, sandlime solid bricks, solid pumice stone anther solid materials. High-performance hybrid mortar for highest loads in almost all building materials. Universal fixing system for a broad range of applications on building sites. Expansion-free anchoring allows low axial spacings and edge distances. Extensive range of accessories for a wide variety of applications. Ergonomic application guns for quick and easy installation. A variety of approvals cover many applications in nearly all building materials and guarantee maximum safety. in hollow core materials Certification Building supervisory approval (DIBt) in combination with injection anchor sleeve FIS H K and injection anchor parts FIS A or FIS E for solid, perforated and hollow bricks (solid bricks also without anchor sleeves) European Technical Approval Option 7 (ETA 0/004) in combination with threaded rods FIS A or RG M for noncracked concrete Building supervisory approval (DIBt) for aerated concrete in combination with cone drill PBB centring sleeve PBZ and threaded rod FIS A. The FIS V also has ETA (ETA08/066) for rebar connections. Building supervisory approval (DIBt) for VBS 8 facing refurbishment anchor ) ) Steel Constructions Machines Gratings Gates Handrails Brackets Pipelines Sanitary items Cable trays ) FIS V 60S ) FIS S Nozzle Type Art.-No. approval contents languages on the label shelf life Qty. per box DIBt ETA months pcs. FIS V 60 S cartridge 60 ml + static mixer GB, I, P, E, PRC, JP 8 6 FIS S 6 0 static mixer FIS V 60 S ) FIS H N Type Art.-No. drill min. drill hole Min. anchorage Min. anchorage sleeve Mortar filling quantity anchor per 60 ml-cartridge fits Qty. per box t h v h v [mm] [mm] [mm] [mm] pcs. FIS H 6 x 85 N Ø8/M8 0 FIS H 8 x 85 N Ø0/M0 0 FIS H 0 x 85 N Ø/M 0

4 Steel Anchors FHY Hollow Ceiling Anchor FDA-R Drop In Anchor FHY Zinc-plated steel FHY A4* Stainless steel of the corrosion resistance class III. The fischer Hollow Ceiling Slab anchor FHY has been developed specially for fastenings in hollow core slabs of prestressed concrete. It is designed for use with standard bolts or threaded rods with metric threads from M6 to M0. The FHY is installed flush with the concrete surface. When the bolt or the nut is tightened a tapered element is pulled into the sleeve, which presses this outwards. In this way, the FHY presses against the sides of the hole, creating a friction fit. If the anchor encounters a cavity during installation, the expansion of the sleeve forms a Y shape. The holding power is now the result of a combination of expansion pressure and formfit. The FHY offers considerable scope in the location of attachment points. Unlike other competing products, it does not have to be located at the centre of the cavity axis, which is often very difficult to define. Instead, it can be located down to a minimum distance of 50 mm from the pre-stressing steel. Hollow ceiling slabs of prestressed concrete, concrete B55. Certification FDA-R Drop in anchor The FDA-R is a drop in anchor with a rim so that the anchor remains flush with the surface of the substrate at all times. As the anchor retains its position item that has been attached to the substrate can be removed and refitted several times with no effect. The drill hole can be a slightly deeper without effecting the anchor s performance. This anchor is suitable for use with all types of screws and studs with a metric thread. Concrete B5 and dense natural stone plus hollow core slabs. Ideal for fastening bolts and threaded rods in combination with general plumbing materials. Air-conditioning Heating & ventilation Pipes Sanitary items Cable trays All types of anchoring: Cross beams Pipes and ventilation ducts Suspended ceilings Safety engineering Cable trays. from M8 Approved for: Pre-stressed hollow-core concrete slabs C45/55 (only zinc-plated version) Note: The correct setting tool must be usen installation, otherwise anchor may not be set correctly. Type Art.-No. drill-ø min. drill hole anchor length qty. per box t l [mm] [mm] [mm] pcs. FDA-R 6 x FDA-R 8 x FDA-R 0 x Type Art.-No. approval drill-ø min. drill effect. anchorage hole anchor length thread min. bolt penetration max. bolt penetration qty. per box DIBt t h ef l M e e [mm] [mm] [mm] [mm] [mm] [mm] pcs. FHY M M FHY M M FHY M M FHY M 6 A M FHY M 8 A M FHY M0 A M * not part of the approval

5 Self-Tapping Screws FBS Self-Tapping Screw FFS Self-Tapping Screw 5 FBS-P Pan head FBS-SK Counersunk head FBS-US Hex. head with intergrated washer rails Pipework Ventilation ducts Suspended ceilings Metal profiles Cable trays Façade sub structures Also suitable for temporary fastenings such as wall shuttering Type Art.-No. approval drill-ø drill hole dia. in object 4 screw dia. For type FBS0/5 S A4 Approved for: Cracked and non-cracked concrete C0/5 to C50/60. Lightweight ceilings and suspended ceilings according to DIN 868 and statically comparable fixings drill hole FBS-S Hex. head FBS-M8 external thread FBS-M8/M0 internal thread fischer concrete screws have a specially hardened thread. The lower turns of the thread also have a serrated edge. The diameter of the hole and the threaf the screw are adapted so that the serrated threaf the screw cuts into the concrete. The thread turns creating a fine undercut, ensuring that the load is safely supported by a perfect form fit. The teeth allow the thread to cut into the concrete, thereby reducing the amount of energy required to insert the screw into its position. anchorage max. usable length actuation qty. per box DIBt d f d s h 0 h ef t fix ETA [mm] [mm] [mm] [mm] [mm] pcs. FBS 5/5 P T0 00 FBS 6/5 SK T0 00 FBS 6/5 P T0 00 FBS 6/5 P T0 00 FBS 8/5 US T40/SW 00 FBS 8/5 US T40/SW 00 FBS 8/5 S SW 6 00 FBS 0/5 S SW 8 50 FBS 0/5 S SW 8 50 FBS 0/0 S SW 8 50 FBS 0/5 S A SW 7 50 FBS 0/0 S A SW The frame fixing screw, type FFS provides stress free standoff installations without the use of additional plugs. The continuous thread ensures that the fixture cannot be pulled up against the building material. Distortion of the profile will therefore not take place, either during or after installation (for instance when applying insulating foam). The distance is also maintained when loads are subsequently applied. The long screw length make exact positioning easy. Approvals Concrete B5 and masonry building materials. / Concrete, solid block, sand lime solid bricks, perforated bricks, sand lime perforated bricks, hollow blocks, solid pumice, aircrete, natural stone. Windows Door frames Fire protection doors Squared timbers Type Art.-No. drill-ø screw length drive head qty per box [mm] [mm] [mm] [mm] pcs FFS 7.5 x T FFS 7.5 x T FFS 7.5 x T FFS 7.5 x T FFS 7.5 x T FFS 7.5 x T FFS 7.5 x T FFS 7.5 x T FFS 7.5 x T FFS 7.5 x T FFS 7.5 x T FFS 7.5 x T FFS 7.5 x T FFS 7.5 x T I S Type Art.-No. approval drill-ø drill hole dia. screw dia. drill hole anchorage thread width across qty. in object nut per box DIBt d f d s h 0 h ef M sw ETA [mm] [mm] [mm] [mm] pcs. FBS 6 M8/ M8 SW 0 00 FBS 6 M8/M0I M8 SW

6 General Fixings SX Plug M Anchor This plug has been developed to expand 4-ways. It form locks in solid the substrates which guarantees maximum load bearing capabilities. The area of application ranges from solid materials through to perforated materials. The screw tolerance range allows the safe use of different screw types and diameters, especially for chipboard screws and the fischer ASL universal spacer screws. For practically all concrete and masonry materials, ranging from perforated bricks to hollow blocks and aircrete (aerated concrete). For wood and chipboard screws between and mm. For all objects which can be fixed with wood and chipboard screws, e.g. wall mounted shelves, light wall cupboards, curtain rails, light coat racks, skirting, light brackets, electric switches, cable ducts, cable clips, lamps, towel rails, mirrors, mirror cabinets, soap dishes, picture frames, wallmounted clocks, hanging baskets, letter boxes & washing lines etc. Concrete, prestressed hollow-core concrete slabs, Natural stone with a dense structure, Solid brick, solid sand-lime brick, Solid block made from lightweight concrete, aircrete, solid panel made from gypsum, vertically perforated brick, perforated sandlime block, hollow block made from lightweight concrete, slabs made of perforated bricks, hollow concrete blocks etc. A conical expansion fixing of glassfibre reinforced nylon and brass taper for universal installation with machine screws and threaded bolts. Designed for a high degree of expansion, the fixing is not sensitive to inaccuracies in drilled holes or material tolerances. The fixing is also ideal for fastenings in thin concrete, artificial stone anther pressure-resistant flat material. Concrete, natural stone, solid bricks, solid gypsum panels, vertical perforated bricks, sandlime hollow bricks, hollow bricks, aircrete. Machines Steel structures Conveyor equipment Vending machines Protective gratings Diamond-drilling equipment instructions: In less pressure resistant materials and perforated brick, the tightening torque should be adapted to the material. The given torque values apply to screws of strength class Ž 5.8. Type Art.-No. drill-ø min drill hole fixing length= min anchorage thread max installation torque qty per box t I=h v M D instructions: In less pressure resistant materials and perforated brick, the tightening torque should be adapted to the material. [mm] [mm] [mm] [mm] pcs M M M M M M8 6 0 M M0 0 M M 54 5 M M6 0 0 Type Art.-No. drill min. drill hole plug length = min. anchoring chipboard screw qty. per box t l = h ef d s x l s [mm] [mm] [mm] [Ø mm] pcs. SX 4 x SX 5 x SX 6 x SX 6 x 50 * SX 6 x 50 R SX 8 x , SX 8 x , SX 0 x SX 0 x SX x SX 4 x SX 6 x (/ ) 0 * without collar 6

7 General Fixings KD8 Gravity Toggle The fischer gravity toggles are standard cavity fixings for ceiling, wall and floor fastenings. With their long threaded rod, they will also bridge large wall thicknesses. The fixings are protected against corrosion as they are zinc plated and yellow passivated. The KD8 possess a toggle bar which automatically locks in cavity spaces. Gypsum plasterboard, gypsum fibreboards, chipboards, fibre cement boards, wood wool building slabs, hard fibreboards, hollow brick ceilings, ribbed floors with hollow stone fillers, stone ceilings, hollow ceilings, trapezoidal sheet, etc. Machines Steel structures Conveyor equipment Vending machines Protective gratings Diamond-drilling equipment Type Art.-No. drill-ø min drill hole fixing length= min anchorage thread max installation torque qty per box t I=h v M D [mm] [mm] [mm] [mm] pcs M M M M M M8 6 0 M M0 0 M M 54 5 M M6 0 0 Testing The table below shows the ultimate and maximum safe working loads of all the anchors tested into the section product of BISON hollow core slabs or Tarmac Topfloor 50 spirall units. The tested slabs have a concrete web thickness of 5 mm and a minimum compressive strength of 55N/mm. These results are tabulated below starting with the highest performing anchor at the top. Technical data Type drill-ø average ultimate load safe working load characteristic axial spacing [mm] kn kn FIS V 60 S injection resin with net /400 FHY M0 metal expansion unit FDA-R M0 rimmed drop-in anchor FBS 8 self tapping screw KD 8 metal gravity toggle M Anchor M FFS self tapping screws SX0 nylon plug FHY M6 metal expansion unit Conclusion It is in our opinion that the fixing types tested in conjunction with hollow core slabs e.g. Bison are highly suitable for typical applications e.g. various M + E services, timber battens, insulation, suspended ceilings etc. As the tests were conducted into the thinnest of the manufactured slabs (50 mm overall ), it is our opinion that the fixings would be suitable for all slab sections varying from mm deep with web thicknesses greater than 5 mm. The test results for all of the fixing testeffers good variation in ultimate loads. This allows the Engineer/Architect/End user to have a broad range of anchors to choose from depending on both function or load performance. Axial spacings vary from anchor to anchor due to the expansion or form-locking characteristics. In our opinion it would be suitable to have axial spacing >00 mm for all the anchors tested except the FIS V 60 S and FFS screw. The axial spacing for the FIS V 60 S as written above are conservative, for more detailed, comprehensive and possibly smaller spacing further testing should be carrieut. Note: The FIS V 60 S resin with FIS H N net achieved a very large concrete cone failure during testing. This cone is larger than the characteristic cone failure expected in standard reinforced concrete due to the compressive stress patterns that the pre-stressing induces. For further information on the testing, please contact our Technical Team. 7

8 Precast Hollow Core Slabs 0 / 0 Precast Hollow Core Slabs. 0 / 0. Printed in the UK fischer fixings (UK) Ltd. Whitely Road Wallingford, Oxon, OX0 9AT Tel: Fax: sales@fischer.co.uk Technical disclaimer / Decisive factors Due to the complexity of building materials, tools, fixing elements and installation techniques a comprehensive recommendation depends on full and detailed understanding of specific site conditions. This document is a factual recorf results obtained under specific conditions and does not constitute an endorsement of the suitability of the the product tested for any specific application. This responsibility remains with the customer. The test results shall be used as a guide for assessement or anchor suitability. Even when our advise is given in good faith it cannot be binding for this reason and we cannot accept any liability for any anchor failure due to the wrong design, misuse or wrong installation. Phone: Fax: technical@fischer.co.uk fischer Fixings (UK) Ltd. Whitely Road, Wallingford, Oxon, OX0 9AT. We cannot be held responsible for any errors within this document and we reserve the right to make technical and range modifications without notice. No liability is accepted for printing errors anmissions. 8