Steel Roof Purlins Design

Welded together they can be used as columns braces and ties.

Steel roof purlins design.

They expand and contract reasonably in extreme temperature changes. Engineered purlin metal mart offers a complete line of engineered purlin material. Rhino metal building purlins and options traditionally rhino steel buildings use 8 to 10 primed red iron c purlins and z purlins. Steel purlin is usually made of cold formed steel that is thin enough to put screws through.

Available in cee or zee shape red oxide primed or galvanized 16 14 or 12 gauge sizes from 4 up to 12 flange widths of 1 1 2 up to 4 cut to your specified lengths hole punching available load tables available for all material. They are installed on top of the roof rafters with a felt underlayment or vapor barrier installed on top. Steeline c purlins are available in different sizes and material strengths to match the design specification of your building. Purlins are 2 by 4 feet and are installed much like metal roofing.

Taller purlins also allow room for increased insulation. The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to. If your design or local building codes demand extreme spans or snow loads taller purlins may be required. The shape of cee purlins does not allow end lapping they are butted together.

Civil engineering design in architecture or structural engineering or building a purlin or purline is a horizontal structural member in a roof. Purlins are non pressure treated 1 x 4 x 12 lumber that is installed on to the roof in a specific layout pattern and screw pattern. The typical roof structure now consists of steel i beam rafters placed approximately 10 feet this varies depending on purlin size and other variables apart with either 4 6 or 8 lightweight steel purlins installed horizontally across the rafters. Do all roofing projects require purlins.

Roof purlin are members used to directly support roof sheeting materials and could be made of timber or steel. They are light weight dimensionally stable accurate and straight. Steeline c purlins are made from quality galvaspan steel and are roll formed to length with holes punched to your specification. They give added support to the roof and also provide a nailing surface for the end panels and drip edge.

Metal roof purlins are installed horizontally under metal roofs. Steel purlin is a direct replacement for wood purlin.