PFS - I-JOIST TO MASONRY - PERPENDICULAR

1 restraint straps PFS - I-JOIST TO MASONRY - PERPENDICULAR . The PFS is a single piece, galvanised steel strap , designed to provide enhanced performance and greater flexibility of use. It exceeds the performance of the traditional 30 x 5mm lateral restraint strap . Its shallow depth means it can run on the surface of traditional timber joists without the need for notching. When you combine its improved strength, lighter weight, increased corrosion resistance (G600 material) and ease of use, specification of PFS. the Cullen PFS strap becomes the preferred choice for all restraint strap applications. MATERIAL. mm galvanised mild steel G600. Also available in mm austenitic stainless steel Grade 304. UNDERSIDE FIXED SURFACE FIXED. Option A. PFS strap surface run over the top of I-Joists using cut I-Joists as full depth noggins supported on C-clips or skew nailed where permitted.

2 This option can also be used in reverse with the PFS strap run on the underside of the joists. DETAILED SURFACE RUN SURFACE RUN. Option B. PFS strap surface run over top of I-Joists using solid timber noggings supported on Z-clips or skew nailed where permitted. Solid noggings must not be more than times the depth of I-JOIST to a maximum of 150mm. In all cases please ensure that solid blocking is fixed between I-JOIST and blockwork TRADITIONAL RESTRAINT. The traditional 30 x 5 or 30 x restraint straps can be supplied in any size as special order items on request. Page 14. restraint straps DETAILED SLOTTED SLOTTED. Option C. PFS strap run through slot in web at level to suit blockwork coursing (care must be taken not to cut top flange when cutting slot) using solid timber noggings fixed between webs of I-JOIST and nailed in position as per I-JOIST manufacturers guidelines.

3 Solid noggings must not be more than times the depth of the I-JOIST to a maximum of 150mm. PST / PSC - I-JOIST TO MASONRY - PARALLEL. PST PST Fixing Option A. PST Fixing Option B. PSC - when using coursing hangers Additional restraint straps Additional straps required at openings RA range provides necessary restraint to supporting walls PERPENDICULAR to joists where joists are spaced at centres no greater than 600mm Additional PFS or PST restraint straps are required at either side of an opening greater than 600mm PFS restraint straps or 30x5 straps are required to supporting walls parallel to joists at maximum of 2m centres Refer to I-JOIST supplier information for restraint straps required PERPENDICULAR to joists specific guidance GENERAL NOTES. 1. PERPENDICULAR restraint straps should be fixed at maximum 2m spacing along the walls, and extend over at least 3 joists.

4 2. In all cases noggings must be tight fitting between the I-Joists and normally fixed to the strap using a minimum of 3No. nails into each nogging. 3. Cullen PFS and PST restraint straps have been tested and verified by CERAM as having equivalent performance to the traditional restraint strap . 4. Parallel restraint straps should be fixed at convenient joist locations along the wall and be spaced no greater than 2m apart. They should be fixed to the I-JOIST flange using a minimum of 7No. x 30mm square twist nails. 5. Contact Cullen Technical Department for any requirements not listed. Page 15.