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| − | '''Back to main [[Contents]] page'''
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| − | | + | : [[8.16 - Diaphragm design]] |
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| − | SR structural roof decks provide a clean uncluttered soffit for the roofing system.
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| − | It is possible to enhance this uncluttered appearance by utilising the structural roof deck as a diaphragm to transfer wind loads from the perimeter walls to internal vertical bracing/walls, therefore reducing, or removing the need for in-plane roof bracing.
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| − | To design the deck as a diaphragm, the following must be considered:
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| − | : • Implications of deck layout, void sizes/locations and vertical bracing/wall positions.
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| − | : • Line loads applied to the diaphragm perimeter
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| − | : • Fixings to all perimeter edges of roof deck area
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| − | : • Minimum of three vertical bracing/braced wall locations required
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| − | '''Note:''' It is important to note that fixing type and frequency may need to be changed to enable diaphragm design - Refer to Fig.8.13a for recommended standard fixing configurations.
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| − | For useful guidance on stressed skin diaphragm design, refer to:
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| − | '''ECCS Publication No88: European Recommendations for the Application of Metal Sheeting acting as a Diaphragm'''
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| − | '''BS 5950-9: Structural use of steelwork in building – Code of practice for stressed skin design'''
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| − | '''SBI Document 174: Stabilisation by stressed skin diaphragm action'''
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| − | '''BS EN 1993-1-3: Cold-formed thin gauge members and sheeting, clause 10.3'''
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| − | Other items within 8.0 - Design - Roof deck:-
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| − | : [[8.0 - Design - Roof deck]] | + | |
| − | : [[8.1 - Quality]]
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| − | : [[8.2 - Spans]]
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| − | : [[8.3 - Loads]]
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| − | : [[8.4 - Standard end laps]]
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| − | : [[8.5 - Extended end laps]]
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| − | : [[8.6 - Raking supports and cutting]]
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| − | : [[8.7 - Cantilevers]]
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| − | : [[8.8 - Sheet lengths]]
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| − | : [[8.9 - Fire rating]]
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| − | : [[8.10 - Durability]]
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| − | : [[8.11 - Acoustics]]
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| − | : [[8.12 - Airtightness]]
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| − | : [[8.13 - Fixing specification]]
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| − | : [[8.14 - Non-fragility]]
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| − | : [[8.15 - Diaphragm design]]
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| − | : [[8.16 - Protex® warranted insulated system]]
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| − | : [[8.17 - Aesthetics]]
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