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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 '''[[8.13 - Fixing specification|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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| − | Go to '''[[8.16 - Protex® warranted insulated system|NEXT]]''' section
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