Secondary Members

Secondary members consists of elements which support the roof and wall sheeting and transfer load to the primary framing. These include Roof Purlins, Wall Girts and Eave Struts.

 Roof Purlins:
Roof Purlins are cold-formed Z-profiles, normally 200 to 250 mm deep, made out of 1.6 mm to 3 mm thick steel. These are fixed to the top flange of the rafters by means of clips bolted to the rafters, and the purlin webs are bolted to the clips. Purlin ends are overlapped to act as continuous beams.

 Wall Girts:
Wall Girts are cold-formed Z-sections, normally 200 to 250 mm deep, made out of 1.6 mm to 3 mm thick steel. These are fixed to the outer flange of the sidewall columns by means of clips bolted to the column, and the girt webs are bolted to the clips. Girt ends are overlapped to act as continuous beams.

 Eave struts:
Eave Struts are C-profiles, normally 200 to 250 mm deep, made out of 2 mm to 3 mm thick steel. These are fixed to the outer flange of the sidewall columns by means of clips bolted to the column, and the eave strut bottom flange is bolted to the clips.