Steel Roof Purlins Design

The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to.

Steel roof purlins design.

Welded together they can be used as columns braces and ties. Civil engineering design in architecture or structural engineering or building a purlin or purline is a horizontal structural member in a roof. They give added support to the roof and also provide a nailing surface for the end panels and drip edge. 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. If your design or local building codes demand extreme spans or snow loads taller purlins may be required. They are light weight dimensionally stable accurate and straight. 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.

Steeline c purlins are made from quality galvaspan steel and are roll formed to length with holes punched to your specification. Purpose use cee purlins are secondary steel framing members most commonly used as roof purlins wall girts and header jamb and sill for windows and doors on metal buildings. Steel purlin is a direct replacement for wood purlin. Do all roofing projects require purlins.

Purlins support the loads from the roof deck or sheathing and are supported by the principal rafters and or the building walls steel beams etc. Metal roof purlins are installed horizontally under metal roofs. Taller purlins also allow room for increased insulation. The shape of cee purlins does not allow end lapping they are butted together.

In timber construction purlins are nailed to the rafter or supporting trusses while in steel roof construction they are welded or bolted to the rafters or trusses by the means of cleats. Rhino metal building purlins and options traditionally rhino steel buildings use 8 to 10 primed red iron c purlins and z purlins. Engineered purlin metal mart offers a complete line of engineered purlin material. They expand and contract reasonably in extreme temperature changes.

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. Steel purlin is usually made of cold formed steel that is thin enough to put screws through.