Interior Framing
140mm Steel C section single studs at 600mm centres. Cross braced to each other. Provides gap for 2nd floor sewage etc. Use space to insert bookcases, shelves etc. into cavity. Plasterboard each side (12mm for sound deadening. Laid horizontally). ezisteel.co.nz/products/140mm-wall-frames
Rafters
Thermax B® is an acceptable solution as an economical thermal break for steel framed walls and steel framed roofs.
11m 290/1.15 @900 centres Medium Wind Zone IL2 16-degree lightweight roof enclosed, no purlin bracing
A four-inch purlin can span 4m. A six-inch purlin can span 6m. An eight-inch purlin can span 8m. A ten-inch purlin can span 10m.
14 gauge 200mm x 65mm roll formed C purlins back to back (To make an I beam) spans 8-9m
All gauges of section C/Z 400×30 require M16 grade 4.6 bolts. 16m single span
Vertebeam steltech.co.nz/our-products nested cold formed box sections provide excellent torsional stiffness and spanning capability.
ezisteel.co.nz/products/roof-trusses
Depending on the design of the truss, a clear roof span of 36m is achievable.
The Futura Box-Beam range starts at 150mm high with incremental increases up to 540mm futura.nz
Roof trusses are pre-fabricated to work with any roof design, pitch and roof cladding on both new and existing buildings. Designed by computer analysis, SteelHaus roof trusses and rafters are available in a variety of roof truss styles. steelhaus.co.nz/steel-framing/#roof-trusses
rollforming.co.nz/150-mm-framing
