Purlin & Girts

A purlin is a longitudinal supporting member used in roof framing that provides support to the roof decking or sheeting. Purlins help in making the entire roof structure more rigid by adding horizontal support throughout the span of the roof. The use of purlin is common in pre-engineered buildings or PEB. In steel constructions, purlins are available in different shapes and are usually made of cold-formed steel that is thin enough to be fastened with screws.

Purlins are part of the secondary framing of construction and help in distributing the load from the roof to the main framing and other major structural elements.

Purlins come in a variety of shapes and are most commonly named after the shape of their cross-section such as,