These may be used to connect the ends of rafters to sides of ridge boards. When bent at angles other than right angles they may be used to connect the ends of orthogonal rafters to hip rafters in hipped - roof construction.
The permissible design load (unfactored) is 3kN (670 lbf) using 3.75 mm nails and 2.8kN (630 lbf) using 3.15 nails.
QUALITY OF MATERIAL
Hurricane Straps are supplied in two materials and two thicknesses as follows:
Galvalume coated steel sheet to ASTM A792M, Grade 345A, AZ180, in thickness 1.0mm. Minimum Tensile Strength of 450MPa, Minimum Yield of 345 MPa with elongation of 12%.
Stainless Steel sheet to ASTM A240-S31603 with Minimum Tensile Strength of 485 MPa in thickness 1.0mm. Minimum Yield of 170 MPa with elongation of 40%.