What size should roof purlins be?

What size should roof purlins be?

2 by 4 feet
Purlins are 2 by 4 feet and are installed much like metal roofing. They give added support to the roof and also provide a nailing surface for the end panels and drip edge.

What sizes do C purlins come in?

Purlin and girts are available in 100, 150, 200, 250, 300, 350 and 400 sections. The range is suitable for use across commercial, industrial, rural and domestic applications.

What is the thickness of C purlin?

Our full range of thickness available for C purlins are: 1.2mm. 1.3mm. 1.4mm.

What is Z girt?

Z Girts are typically produced to hold in place different thicknesses of rigid or semi-rigid insulation. Varying the length of the Z flange can allow for insulation that can enhance the R-value of a building. Z girts are an ideal product for furring out the interior walls of an existing masonry or new concrete wall.

What is girt framing?

In architecture or structural engineering, a girt, also known as a sheeting rail, is a horizontal structural member in a framed wall. Girts provide lateral support to the wall panel, primarily, to resist wind loads.

What is the minimum spacing of purlins?

How to Install Purlins. In order for the sheets to be easily fixed to the purlins, as a rough guide they should be at least 50mm wide. When positioned, roof purlins should be spaced no further than 1.2 metres apart when using sheeting with a thickness of 0.7mm, and 1 metre when using 0.5mm sheeting.

What is purlin construction?

In steel construction, the term purlin typically refers to roof framing members that span parallel to the building eave, and support the roof decking or sheeting. Purlins are most commonly used in Metal Building Systems, where Z-shapes are utilized in a manner that allows flexural continuity between spans.

How far apart do you space purlins?

The purlin are ultimately used to fasten the roof steel providing a diaphragm effect, along with the siding, when properly engineered and installed. Spacing is typically 24″ on center in low snow loads and is reduced based upon truss span and snow load.

What is a standard purlins and girts?

Standard Purlins & Girts. Metroll offer a range of purlins and girts from 100mm to 400mm in Z and C profiles, cut to length, un-punched or punched. All purlins and girts are manufactured from high tensile, G450, G500 or G550 galvanised steel, with a minimum Z350 coating.

What are metmetroll purlins and girts?

Metroll offer a range of purlins and girts from 100mm to 400mm in Z and C profiles, cut to length, un-punched or punched. All purlins and girts are manufactured from high tensile, G450, G500 or G550 galvanised steel, with a minimum Z350 coating.

What material are purlins made of?

All purlins and girts are manufactured from high tensile, G450, G500 or G550 galvanised steel, with a minimum Z350 coating. Purlins can be used as structural steel in light weight buildings, but must be used in accordance with a design certified by an engineer.

Where can I find section properties for different purlin configurations?

Section properties for different purlin configurations can be found in the downloadable manual. NOTE: New South Wales designers must refer to the New South Wales LYSAGHT SupaZed® and LYSAGHT SupaCee® Purlins and Girts Range.