Roof Purlins Nz

Hst steel purlins girts are high strength lipped profile sections manufactured by steel tube to provide an economic solution for your building project and to assist with design.

Roof purlins nz. Overview dimond s range of top notch purlins are compact lightweight and easy to install. Sections are supplied punched and cut to length as required. This is a heavy roof so the 1200 mm column on the right side of the table is excluded it only applies to light roofs. The purlin spacings should be limited to the lower of the trafficable limitations and design wind load with the capacity of the structure.

This is a skillion roof so consider roof cladding how it will be fixed whether it is to purlins battens or sarking and the proposed ceiling lining requirements. Purlins typically 75 x 50 mm and fixed across the rafters were spaced at 760 900 mm centres depending on the roof cladding. This result should be referenced to the wind load span design graphs. It should be noted that timber purlins for metal roof cladding are minimum 70mm x 45mm h1 2 18 moisture content and that battens used previously for tiles must not be used.

For a fuller explanation of this refer to the nz metal roof and wall cladding code of practice. Are 480 600 or 900 mm. Tophat purlins are manufactured from hot dipped galvanised steel with a coating weight of 275gram sqm in line with other common lightweight steel structural building products. Z450 galv steel is available upon request with up to a 12 week lead time.

Ms tophats are cut to length and available in a range of sizes and gauges to suit a variety of applications. Mss purlins and girts are available in a variety of sizes and gauges cut to length and prepunched to suit a variety of applications. Top notch purlins come in a full range of sizes from 60mm to 150mm depth easily tek screwed to the supports without the need for purlin bracing and cleats. Metalcraft roofing s structural division manufactures metalcraft super span shortened to mss purlins and girts for the new zealand construction market and the pre engineered garages and sheds market segment.