SPEC SHEET No. 18.1 BRACING WALL TRANSFER October 2020
Lower Bracing Wall to Underside of Floor Joists - Parallel
Refer to table below for fixing requirements
2x 90x35 shear blocks 140mm minimum length
Screw blocks to top plate via 2x 14g 100mm batten screws per block
Lower Bracing Wall to Underside of Floor Joists - Parallel Max. Block Spacing
0.9m
Bracing Wall Capacity kN/m
Minimum Block Size
3.0 3.4
90x35 90x35 120x35 90x63 120x35 90x63
6.0 6.4
1.2m
Fixings Per Side Size Type 2.8x50mm Nail 2.5x50mm Nail 2.8x50mm Nail 14gx75mm Screw 2.5x50mm Nail 14gx75mm Screw
Qty 3 3 4 1 3 1
Minimum Block Size 90x35 90x35 140x35 90x63 140x35 90x63
Fixings Per Side Size Type 2.8x50mm Nail 2.8x50mm Nail 2.8x50mm Nail 14gx75mm Screw 2.8x50mm Nail 14gx75mm Screw
Qty 3 3 5 1 6 1
Lower Bracing Wall to Underside of Floor Joists - Perpendicular 2/90x35 shear blocks 130mm minimum length Screw blocks to top plate via 2x 14g 100mm batten screws per block
15mm
Eq. Eq. Eq. Eq. Nails to Blocks
Max. Distance between Blocks
3.0 3.4 6.0 6.4 8.7
1.2m 1.2m 1.2m 12m 0.9m
Fixing Locations
15mm
Eq. Eq.
Bracing Wall Capacity kN/m
Eq. Eq. Eq. Eq. Screws to Blocks
35mm 35mm Screws to Shear Blocks Max. Distance Between Blocks
NOTES: 1. Values based on timber framing with a joint group of JD5 or greater 2. Fixing Blocks to fit snug in between Shear Blocks 3. 14g x100mm Batten Screw based on using 2x 35mm shear blocks through a 35mm top plate. Where wider members are used increase the length of the screw by the same length 4. Floor Joists to be installed and fixed in accordance with appropriate installation guide and AS1684 5. Designs rerived from information available in AS1720.1 and AS1684.2