DESIGN GUIDELINES ROOFING/ROOF PLUMBING

Transcription

1 DESIGN GUIDELINES ROOFING/ROOF PLUMBING VERSION DATE AUTHOR APRIL 2010

2 1.0 Design Principles 1.1 ROOF TYPES STATUS NEW TYPE Pitched Roofs: Pitched metal deck or tile roofs shall generally be provided to all buildings. Flat Roofs: will not be accepted by the University. REFURBISHMENT Flat Roofs shall be: 1. Pitch to be a minimum of one degree greater than that recommended by Manufacturer. 2. Design and installation of metal deck roofs shall comply with AS Design and Installation of Sheet Roof and Wall Cladding 3. Roof design shall incorporate maintenance traffic loads of 1.8kN as per Manufacturer s foot traffic design guidelines. Membrane Roofs Torch on membrane installed as per manufacturers installation instructions. 1.2 MATERIAL SELECTION It is a requirement of the University that the following materials and jointing methods must be specified and installed: COPPER Roof Sheeting Rolled and Seamed (Roofs) Gutters (Eaves, Box and Valleys) Flashings and Cappings JOINTING Sheeting Gutters, Sumps, Rainheads and Outlets. Ridges and Valleys MATERIAL 0.7mm Half Hard Soft Tempered and not less than 0.6mm thick 0.7mm Half Hard 0.7mm Half Hard JOINTING METHODS Concealed fixed with purpose made hooks and clips to allow for thermal movement. Copper sheeting should not be fixed with nails, screws or the like through its oute Seamed or welded Maximum 1.5m centres. Joints to have 75mm lap LEAD Roof Sheeting Gutters (Box and Valleys) Flashings, soakers, parapets and cappings. Lead tacks/clips MATERIAL minimum 40kg per square metre minimum 40kg per square metre minimum 25kg, 30kg preferred per square metre Same weight as the flashing or capping they fix Roofing_and_Penetrations_2009_version_1_with_amendmentsJL.doc Page 2 of 12

3 JOINTING Flashing Gutters Ridges Valleys Lead tacks/clips JOINTING METHOD 25mm lap and lead burnt 25mm lap and lead burnt maximum 1.5m centres with a 75mm lap maximum 1.2m centres with a 75mm lap To be fixed with clouts compatible with the adjacent roofing material STAINLESS STEEL Roof Sheeting Gutters (Box), sumps, rainheads and outlets MATERIAL 316 with minimum thickness of 0.9mm 316 grade of minimum gauge 1.2mm JOINTING Gutters JOINTING METHOD soldered or welded STEEL AND ALUMINIUM Profiled Steel Roof Sheeting Flat Steel sheeting for Cappings, flashings, trims and the like MATERIAL 0.48 BMT 0.55 BMT ROOF SUPPORT Battens SEALANT (Silicone) SPACING Not greater than 800mm for any roof This degree of support is required to provide adequate long term support of the sheets where they are subjected to maintenance traffic as per manufacturer s foot traffic design guidelines. JOINTING METHOD To be used only to seal lap joints and should not to be used in filling gaps as per manufacturer s instructions. Membrane Roofs Three layer torch on polyester reinforced bitumen based sheet is the preferred system, with a mineral chip upper surface where directly exposed to traffic and weather. The bottom layer should be a vented sheet where there is a likelihood of residual moisture in the substructure. The membrane should be provided with a means to vent the substrate moisture either at its perimeter or with vent cowls spaced across the roof area. Slate roofs Slates should be pre-drilled, not punched, and should be fixed with copper clouts which fit snugly into the hole. Copper hooks or straps should be used to secure the last few slates where finishing off an area of roof. 2. Specific Design Requirements 2.1 SARKING, SUB DECKING AND INSULATION Slate and Tiles Where slates or tiles are fixed over a timber, plywood or compressed sheet sub-deck the roof should have sarking and the space between the sub-decking and the roof covering allowed to ventilate and to drain condensation water to a gutter. Copper roof sheeting should be separated from its supporting deck with a layer of polyester reinforced bitumen sheet Roofing_and_Penetrations_2009_version_1_with_amendmentsJL.doc Page 3 of 12

4 Insulation and Condensation Control All new and refurbished roofs shall achieve a system thermal resistance level (R-value) of not less than 2.5 for both upward and downward heat flow. 2.2 PENETRATIONS, FLASHINGS, PLANT AND COMMUNICATIONS EQUIPMENT General Consultants refer to Appendix C: Detailed Drawings at the end of this document, for selection of most appropriate detail or specify alternative to the sub topics below. Penetrations Penetration of the roof covering should be avoided wherever possible by attention to the location of equipment and the routing of services lines. When penetrations cannot be avoided they should be grouped and arranged in an orderly fashion to minimise the number of penetrations of the roof, and detailed in accordance with the standard detail methods. Penetration Flashing Sheet flashings on slate or tile roofs should extend up the roof from the penetration to beneath the next tile/slate joint. Where this distance is less than 200mm the flashing shall be extended a further full tile/slate. In each case the flashing is to be folded over at its top end and dressed under the tile/slate. Wall penetrations shall be set out so as to finish clear above the line of any perimeter roof flashing. Individual pipe flashings (Dektite) 'Dektite' or 'Rooftite' are used on a profiled metal deck roof, they shall be used in conjunction with a flat sheet metal cover flashing as indicated on Detail 34 & 35 of Appendix C of this document. Only one Dektite (or equivalent) shall be used for one pipe / conduit that penetrates the roof. The university will not accept fluted flexible electrical conduit with this type of flashing as water travels down the spirals of the conduit and by-passes the flashing. Therefore only smooth surfaced, preferably round, elements should be flashed in this way. 2.3 FASCIAS, SOFFITS, CAPPINGS To be painted as per USYD Finishes for rendered walls. If coverage is needed in lieu of painting then the minimum gauge of materials should 0.60BMT for cappings, flashings, trims and the like. 2.4 SEPARATION STRIPS, EXPANSION JOINTS Movement Roofs are almost invariably constructed of a number of different materials which may adjoin or overly one another. Each material will have its own physical properties, including the degree to which it will move over time with changes in temperature and moisture. Wherever two different materials meet or overlap they should allow each to move independently of the other. This needs to be achieved without compromising the primary function of the roof which is to exclude rainwater. Galvanic Separation Dissimilar metals shall not be fixed in contact with one another, or where rainwater may run off from a nobler to a less noble metal. Mechanical fixings shall be made of the same metal, or a metal of equivalent nobility, as the material through which they are driven wherever practicable; Roofing_and_Penetrations_2009_version_1_with_amendmentsJL.doc Page 4 of 12

5 Where contact between dissimilar metals cannot be avoided, suitable galvanic separation materials shall be placed between those metals to eliminate direct contact. Separation materials should be weather resistant, UV stable, durable and chemically inert, and might include rubber, neoprene, some sealant materials or commercial grade adhesive tapes; Dissimilar metals should be physically separated from one another to prevent the more noble metal from promoting corrosion of the less noble metal. This separation should also eliminate situations where rainwater will run off a more noble metal onto a less noble metal. Examples: Lead and copper flashings should not be used above or in contact with steel or Zincalume roofing; Brass or steel screws should not be used for aluminium roofing. 2.5 ROOF SAFETY SYSTEMS Introduction Where possible, roof safety should be achieved through the provision of suitable barriers at the edges of roofs, to prevent a fall. Edge barriers might take the form of guard-rails, parapets, adjacent walls, other roofs or the like, or a combination of the above Where the particular roof design does not provide edge barriers, the safety of persons having access to the roof shall be achieved through the use of suitable harness based systems; Static line safety systems are generally preferred to individual anchor point systems as they provide greater flexibility of movement for maintenance personnel. Combinations of static line and individual point systems may be acceptable to achieve full coverage of roofs. Provide Safety Mesh to comply with AS 4389 for flat roofs. The University will not accept surface mounted roof anchors. 3.0 Documents and Certification Requirements Design and documentation utilising these design guidelines are to incorporate the requirements of the following: SAA HB Installation code for metal roofing and wall cladding; AS Fixed Platforms, walkways, stairways and ladders Design, construction and Installation; AS Inspection of Buildings; BCA 2008 Volume 2; AS National Plumbing and Drainage - Stormwater Drainage AS4200 Pliable Building membranes and underlays 1994 AS/NZS Safety Mesh Lead Sheet in Building A guide to Good Practice. Copper Roofing A practical Handbook. AS Design and Installation of Sheet Roof and Wall Cladding AS 3959 Construction of buildings in bush fire-prone areas. Manufacturers Instructions and Recommendations Hydraulic Services see Appendix B: Referenced Documents of this document. Certain fundamental principles such as atmospheric environment, location of campuses, heritage buildings, reducing scheduled maintenance programs and roofing/roof plumbing life be greater than 50 years underpin the more detailed requirements set out in the sections which follow. The resolution of construction details, choices and uses of materials, should have recourse to these fundamental principles and override the above mentioned Australian standards. This document and its accompanying details are intended to provide a basis for the design and documentation of services penetrations through the roofs and walls of the University's Buildings. The size and nature of services vary considerably, as do the methods and materials of construction of the roofs and walls. Roofing_and_Penetrations_2009_version_1_with_amendmentsJL.doc Page 5 of 12

6 Roof design must meet the following university requirements: Appropriate to the function of the building, safe and effective; Appropriate to the architectural context of the campus locality, noting that various parts of the University's campus contain buildings and precincts of heritage significance; New gutters, sumps, rainheads, shall be oversized by atleast 40%; New or replacements box gutters must have in-built overflow capacity not less than the capacity of the primary outlet(s). Also Minimum clear width 0f 300mm is required for excluding overhangs and obstructions for cleaning/maintenance purposes; Overflows to be a minimum of 25mm from the bottom of the box gutter New or replacements box gutters must be provided with expansions joints appropriate to their length and material of construction; Supports checked for condition by contractor and upgraded to correct fall of 1:100. Stainless Steel and Copper joints must be soldered or welded; New or replacements box gutters shall be configured and positioned so that they may be easily accessed and cleaned; Downpipes to be a minimum of 100mm in diameter; Rainwater collection and disposal systems including gutters, sumps, downpipes shall be designed by a suitably qualified engineer; All new roof designs or major roof refurbishments are to be approved by the Quality Assurance Plumbing and Roofing representative listed in Appendix A of this document prior to construction commences; Supporting of all new roofs and major roof refurbishments, including associated flashings and penetrations, shall have a minimum 10 year warranty on workmanship of the installation and a minimum 20 year warranty on the roofing materials. 3.1 INSPECTIONS AND CERTIFICATION REQUIREMENTS Roof Sheeting and Roof Drainage has been installed and tested in accordance with this document. 3.2 DESIGN DRAWINGS REQUIREMENTS AND RESPONSIBILITIES It is a requirement of the university that each legend page must nominate that: Roof design and penetrations have been designed and documented in accordance with the university Design Guidelines 2009 Version 1.0 All works to comply with the university Design Guidelines 2009 Version 1.0; All works to be installed by a licensed roofer. All new roofs and major roof refurbishments design and documentation must submit the following for review to representatives listed in Appendix A: Relevant CIS Contacts at the end of this document: Gutter, overflow and downpipe sizing calculations (including Australian Rainfall Index used, roof area, etc). Roof design, material selection, flashings, penetrations, fixings, fasteners, waterproofing and vermin proofing measures. Relevant section drawings from Appendix C: Detailed Drawings at the end of this document incorporated into the design provided via the university Project Manager; Detail drawings of the following: Gutters, Valleys, Sumps and Overflows; Penetrations and Flashings Separation Strips and Expansion joints. Jointing details of the above Where detail drawings cannot be resourced from Appendix C: Detailed Drawings of this document then the designer is responsible in documenting detail design drawings. Approval must be granted before construction commences. Roofing_and_Penetrations_2009_version_1_with_amendmentsJL.doc Page 6 of 12

7 Wind For an individual building or group of buildings, the designers must analyse the risk of wind turbulence. Bushfires Designers to be aware if area of new works or refurbishment is within bushfire zoning. To comply with AS 3959 Construction of buildings in bush fire-prone areas. Painting and Finishes All new and existing plumbing and associated pipe-work, mechanical, fans, cowls etc. on or projecting above roofs must be finished to match the roof colour in proper trades like workmanship, however, all metal framing shall be hot dipped galvanised after fabrication and may be left unpainted. Plant Platforms A minimum clearance of 600mm should be maintained for access beneath any such platform or any equipment or ductwork suspended below it. Steel plant and equipment support platforms installed on roofs shall be manufactured from all hot dip galvanised components. Platforms shall be designed and constructed to be readily assembled or disassembled on site and. so as to minimise site cutting and welding. Floor gratings to platforms should have readily removable panels for access and accommodation of future services. Plant and Equipment Plant and equipment should be located in a plant room designed for the purpose or fixed to adjacent walls/buildings; Where the foregoing cannot be achieved, and plant has to be placed on a roof, or where existing plant is located on a roof, such plant and equipment should be located in such a way that the roof surface and materials are fully accessible for maintenance or replacement; Plant and equipment should be located in such way as to be fully accessible for maintenance and replacement; Where plant and equipment is required to be located on a roof, it shall be placed on steel or aluminium platform structures elevated above the roof surface. A clear space of minimum 600mm shall be provided between the roof surface and the lowest part of the platform structure, or any item of equipment or reticulation suspended below the platform; Platforms shall be designed by a suitably qualified structural engineer to take into account the proposed and likely future equipment loads. Platforms shall be designed in accordance with applicable parts of AS1657, and provided with perimeter guardrails where necessary. Steel platforms shall be constructed using hot dip galvanised members. Walkovers be placed on concrete blocks, with a membrane below. New Plant and equipment to have tundishes for collection of condensate. No condensate is to be emitted onto roof surface. Condensate drain lines and tundishes will not penetrate the roof and must be piped back to a central or nominated penetration zones as coordinated between mechanical and hydraulic services engineers and contractors. 3.3 Communications Equipment Approvals must be obtained from the representatives listed in Appendix A of this document at the following Stages: 1. Preliminary: Designs for installation of communications equipment (transmission towers, relays, satellite dishes, panel and parabolic antennae and the like) including their associated equipment shelters, cable trunking and access requirements. 2. Design (Early Stage) Roofing_and_Penetrations_2009_version_1_with_amendmentsJL.doc Page 7 of 12

8 Installation of communication equipment with details being provided in relation to any radiation or other hazards might be created. In the case of installations proposed for existing roofs, an assessment of the condition of the roof shall be made prior to commencement of design work. The assessment to take into consideration such matters as structural integrity, weathering condition, existing defects or failures, other equipment or facilities already on the roof, pre-existing hazards on the roof (materials or equipment) and access requirements; New communications equipment shall be kept clear of cappings and flashings (minimum 150mm) and be set back not less than 1000mm from the roof edge or a bounding wall; Where possible, such installations should be designed to be self supporting by virtue of its own weight and configuration, with the minimum number of direct fixings to the building structure. The equipment should be readily removable without damage to the building fabric or creation of a need for major rectification works; The design of such installations shall not impair access for maintenance of the roofing materials or other equipment on the roof; Signage Installations shall include suitable advisory signage placed at the door giving access to the subject roof, warning persons accessing the area of any hazards the installation may generate. Lines shall be painted onto the roof identifying areas and distances that may be unsafe; Testing Design documentation for projects must include a requirement that all box gutters are flood tested prior to issue of certificate of practical completion; Design documentation for projects must include a requirement that all flat membrane roofs are flood tested prior to issue of certificate of practical completion. Where the membrane is exposed, this test is to be carried out when the works are complete. Where the membrane is concealed below a wearing slab, insulation or other overlay material, flood testing is to be carried out after the membrane is complete but before any overlay is placed, and again after the overlay has been completed. 3.4 INSPECTION AND CERTIFICATION REQUIREMENTS 1. Where the structure to which any anchor point is proposed to be attached is timber, an inspection shall be made and report prepared by a suitably qualified person on the condition of the timber member(s). The inspection should be carried out in accordance with AS and extend to cover the whole of the roof of which the member is part. The report should identify the species of the timber as well as its condition; 2. Prior to the installation of any anchor point, a suitably qualified practising structural engineer shall inspect the roof or other structure to which the anchor is intended to be attached, and shall provide a certificate, in a form acceptable to the University, that particular roof or other structure is capable of sustaining the loads that could be applied to it in the event of a fall; 3. Certificate of Safety System. Designed, installed and tested in accordance with AS and this document 4. All anchor points including static line supports shall be provided with a manufacturer's compliance certificate Roof Safety System must meet the following university requirements: No installation of anchor points shall be carried without the prior approval of representatives listed in Appendix A: Relevant CIS Contacts of this document; Any single or double anchor point or static line shall be designed to suit the particular roof and roof structure upon which it is proposed to be mounted; Anchor points shall be installed in locations that are accessible for inspection at any time; Fixing of anchor points to timber and steel structures shall be bolted. Bolted connections shall be designed so as not to inherently weaken the member for which they are made. Screw fixings will not be acceptable under any circumstances; Fixing of anchor points to concrete structures shall be carried out with a complete through bolt assembly with inner and outer plates. Where through bolting is not possible due to particular site constraints, anchor points in concrete shall be effected using an approved chemical insertion method. Any such products and product systems shall be Roofing_and_Penetrations_2009_version_1_with_amendmentsJL.doc Page 8 of 12

9 used and applied in strict accordance with the manufacturer's written instructions, and a written statement shall be provided from the manufacturer stating that the product and system are suitable for the particular application; All fixings shall be stainless steel 316; Galvanised ladders to be provided at changes in roof levels; Ladders to have landings on flat horizontal surfaces. Barriers to be placed around perimeter of roof safe walkways according to AS Fixed Platforms, walkways, stairways and ladders Design, construction and Installation; After submission of the above approval must be granted from the representatives listed in Appendix A of this document before construction commences. Signage Each complete installation shall include suitable advisory signage and a plan of the installed system, to be placed adjacent to each specified point of access to the system as per AS/NZS Clause Labels and Signs; Testing After installation, each single person anchor point shall be pull tested to 15 kn and each two person anchor point shall be pull tested to 21 kn; Documentation/Drawings Design documentation for roof safety systems should require that at completion of the initial installation of the system, the installing Contractor shall provide to the University the following:- 1. An accurate plan of the installed system, drawn to a suitable scale, locating and describing the nature of each anchor point and other component (eg: static lines) and identifying the structural item to which they are attached; 2. the engineering and manufacturer's certificates called for above; 3. all harnesses, lanyards, carabiners, transfasteners, and other loose or mobile components as necessary; 4. Roof Access detailed drawings to be drawn at Scale 1:5. 5. Training for University nominated personnel in the use of the system. It is also a requirement of the university that each legend page must nominate that: 1. Roof Safety System has been designed and documented in accordance with the university Design Guidelines 2009 Version All works to comply with the university Design Guidelines 2009 Version All works to be installed by a licensed roofer Roof Access Permits and Maintenance Requirements All parts of all roofs must be accessible for maintenance; Where the roof design results in the creation of a roof void, the void should also be accessible for inspection; Access provided to and within roofs should be in accordance with AS and any other applicable safety standards; Access to roof areas should be provided through a service area (eg. plant-room, stairwell, roof space) and preferably not through public areas. Where the foregoing cannot be achieved, that access should be provided in such a way as to preclude unauthorised access; Accessible roof voids should be adequately lit and provided with suitable walkways for maintenance access. Access to Roof Area must not be through windows or mobile equipment for example ladders, step ladders, chairs, etc. Dedicated access walkways must be provided by the installer. Safety Roofing_and_Penetrations_2009_version_1_with_amendmentsJL.doc Page 9 of 12

10 All persons working on roofs shall have a current WorkCover OH&S GENERAL INDUCTION for construction work in NSW OHS Construction Induction Training Certificate and shall wear shoes suitable for work on the particular roof type. Harnesses shall be worn where required. Where maintenance access is or is likely to be required to a particular roof or plant equipment located on it, consideration shall be given to the installation of plant platforms, ladder brackets, roof anchor and/or static line systems to provide for ongoing safety on the roof. The extent of these requirements to be confirmed prior to the project going to tender with the representatives listed in Appendix A of this document. Definitions Anchor point Fall - Fall Arrest System Work Positioning System Description Any single or multiple fixed anchor point, or static line support point, whether part of a work positioning or fall arrest system, and whether attached to a roof, wall or other structure Either a free fall, impeded fall or uncontrolled slide down a roof or similar structure. Any arrangement of anchor points and other equipment or fixtures which are designed to arrest the fall a User who could reach a position where a fall is possible. Any arrangement of anchor points and other equipment or fixtures which are designed to prevent a User from reaching any point from which they could fall. Appendices: Appendix A: Relevant CIS Contacts Group Acronym Contact Quality Control & Safety - Plumbing & Roofing ( QC&S P&R) Quality Assurance Plumbing & Roofing (CIS QA P&R) Appendix B: Referenced Documents Documents referenced throughout this document can be found at the following page on University of Sydney s Campus Infrastructure & Services (CIS) Internet Hydraulic Services document resides under Design Guidelines CAD Drawing Standard document resides under Design Guidelines Master planning Survey, Grounds conservation Plan and Conservation management Plan reside under Heritage Documents Environmental Policy For Further help on obtaining referenced documents go to the following link: for a full list of contacts. Appendix C: Detailed Drawings (Available on request) Roofing_and_Penetrations_2009_version_1_with_amendmentsJL.doc Page 10 of 12

11 Drawing Register # Detail Title Version Roof Material 1. Wall flashing folded sheet metal over membrane roof cut in type. B Walls and Membrane Roofs 2. Wall flashing extruded aluminium over membrane roof - pressure seal type B Walls and Membrane Roofs 3. Wall flashing copper over copper box gutter - cut in type (Section) B Walls 4. Wall flashing copper over copper box gutter - cut in type (Section) B Walls 5. Large service box penetration, brass & copper, for membrane on concrete Membrane roof (Plan) 6. Large service box penetration, brass & copper, for membrane on concrete B Membrane and Topping roof (Section) Slab 7. Large service box penetration, brass & copper, for membrane on concrete B mbrane and Topping Slab roof (Section) 8. Large service box penetration colorbond, for colorbond/ zincalume roof on A Colorbond/ zincalume timber frame (Plan) 9. Large service box penetration colorbond, for colorbond/ zincalume roof on B Colorbond/ zincalume timber frame (Section) 10 Large service box penetration colorbond, for colorbond/ zincalume roof on B Colorbond/ zincalume timber frame (Section) 11 Small service box penetration copper, for membrane on concrete roof (Plan) Membrane and Topping Slab 12 Small service box penetration copper, for membrane on concrete roof A Membrane and Topping (Elevation) Slab 13 Small service box penetration copper, for membrane on concrete roof A Membrane and Topping (Section) Slab 14 Small service box penetration copper, for membrane on concrete roof A Membrane and Topping (Section) Slab 15 Small service box penetration slate,/tile roof (Plan) Slate/Tile 16 Small service box penetration slate,/tile roof (Elevation) A Slate/Tile 17. Small service box penetration slate,/tile roof (section) B Slate/Tile 18 Small service box penetration slate,/tile roof (section) H Slate/Tile 19 Small service box penetration colorbond roof (Plan) Colorbond 20 Small service box penetration colorbond roof (Elevation) A Colorbond 21 Small service box penetration colorbond roof B Colorbond 22 Small service box penetration colorbond roof (section) B Colorbond 23 Upstream cover flashing, sheet metal, for profiled metal roofs A Colorbond and Copper 24 Small diameter penetration spigots, lead, for slate/ tile roofs (section) A Slate / Tile 25 Small diameter penetration spigots, lead, for slate/ tile roofs (Isometric A Slate/Tile views) 26 Small diameter penetration spigots, lead, for slate/ tile roofs (section) A Slate/Tile 27 Concrete machinery pad mount. (Plan and Section) and uni-strut bracket A Membrane mounting for hydraulic, electrical and refrigeration lines transversing membrane on concrete roof. 28 Concrete pad and uni-strut bracket mounting for hydraulic, electrical and A Membrane refrigeration lines transversing membrane on concrete roof. 29 upvc fume cupboard exhaust through membrane on concrete roof (section) C Membrane 30 Wall flashing, lead, over membrane/ concrete roof - no cavity B Walls and Membrane Roofs 31 Wall flashing, lead, over membrane/ concrete roof - with cavity B Walls and Membrane Roofs 32 Vent pipe penetration through membrane./ concrete roof (plan) Membrane 33 Vent pipe penetration through membrane./ concrete roof (section) A Membrane 34 Vent pipe penetration through metal roof (plan) (Dektite) Colorbond 35 Vent pipe penetration through metal roof (section) (Dektite) B Colorbond Roofing_and_Penetrations_2009_version_1_with_amendmentsJL.doc Page 11 of 12

12 36 Structural steel pipe penetration and plant platform through membrane/ Membrane concrete roof (plan) 37 Structural steel pipe penetration and plant platform through membrane/ A Membrane concrete roof (section) 38. Structural steel pipe penetration and plant platform through metal deck roof Colorbond (plan) 39. Structural steel pipe penetration and plant platform through metal deck roof B Colorbond (section) 40. Membrane perimeter detail where bounding wall is metal clad A Colorbond Walls 41 upvc fume exhaust through slat/ tile roof C Slate / Tile 42 upvc fume exhaust through metal roof C Colorbond 43 Weatherhood (removable) for wall penetrations A Wall 44 Vent pipe penetrations through slate/ tile roof. A Slate / Tile Roofing_and_Penetrations_2009_version_1_with_amendmentsJL.doc Page 12 of 12