|
|
(One intermediate revision by the same user not shown) |
Line 1: |
Line 1: |
− | SR structural roof decks provide a clean uncluttered soffit for the roofing system.
| + | Section moved here |
− | | + | : [[8.16 - Diaphragm design]] |
− | 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.
| + | |
− | | + | |
− | To design the deck as a diaphragm, the following must be considered:
| + | |
− | : • Implications of deck layout, void sizes/locations and vertical bracing/wall positions.
| + | |
− | : • Line loads applied to the diaphragm perimeter
| + | |
− | : • Fixings to all perimeter edges of roof deck area
| + | |
− | : • Minimum of three vertical bracing/braced wall locations required
| + | |
− | | + | |
− | '''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.
| + | |
− | | + | |
− | | + | |
− | For useful guidance on stressed skin diaphragm design, refer to:
| + | |
− | | + | |
− | '''ECCS Publication No88: European Recommendations for the Application of Metal Sheeting acting as a Diaphragm'''
| + | |
− | | + | |
− | '''BS 5950-9: Structural use of steelwork in building – Code of practice for stressed skin design'''
| + | |
− | | + | |
− | '''SBI Document 174: Stabilisation by stressed skin diaphragm action'''
| + | |
− | | + | |
− | '''BS EN 1993-1-3: Cold-formed thin gauge members and sheeting, clause 10.3'''
| + | |
− | | + | |
− | | + | |
− | ----
| + | |
− | | + | |
− | | + | |
− | Go to '''[[8.16 - Protex® warranted insulated system|NEXT]]''' section
| + | |