BW Fire Restraint Wall System
- In certain applications it is necessary to include fire protection to some or all of the perimeter walls around the building.
- There are many fire resistant wall cladding systems which are available today.
BW offer 2 fixing systems:
Fixing System 1
- ‘Butt/Non-Continuous Rail Arrangement’, normally fixed outside the columns.
- Can also be fitted between the columns.
- Allow 60mm gap at rail joint for expansion.
Fixing System 2
- ‘Sleeved Rail Arrangement’. Alternate sleeve butt/non-continuous connection to column, even number of bays.
- When odd bays occur, use the special sleeve.
- Allow 60mm gap at rail joints for expansion.
Special Firewall Sleeves
Punched with slotted holes to allow expansion at the side rail column connection.
- The rail or cleat is slotted longitudinally (14mm x 50mm) on the standard gauge lines.
- 60mm gap required between ends of rails.
- Fixing bolts to all joints must be fitted with a combustible washer, which will collapse under fire conditions, to allow movement for the rail to expand.
- The period of resistance is solely dependent on the cladding material used, and the type of construction.
- A certificate should be obtained from the cladding supplier.
- All primary structural steelwork, supporting the rails and cladding, should be fire protected.
For more details and information, please refer to our Purlin brochure.