Considering roof construction, what is the PRIMARY role of purlins?
Understand the Problem
The question asks about the primary function of purlins in roof construction. Purlins are structural members in a roof system, and we need to identify their main purpose from the given options.
Answer
Purlins provide horizontal support for roof decking, transferring the load to rafters or trusses for structural stability.
The primary role of purlins is to provide horizontal support for roof decking or sheeting and transfer the load to the building's rafters or trusses, ensuring structural stability.
Answer for screen readers
The primary role of purlins is to provide horizontal support for roof decking or sheeting and transfer the load to the building's rafters or trusses, ensuring structural stability.
More Information
Purlins are essential in roof construction as they prevent overloading of the roof structure by distributing the load evenly. They are typically used in metal roof and steel frame construction.
Tips
A common mistake is thinking purlins directly support the roof's weight, but they primarily transfer the load to other structural members.
Sources
- What is a Roof Purlin, and Why is it Important? - FBi Buildings - info.fbibuildings.com
- Steel Purlins: What You Should Know - norsteelbuildings - norsteelbuildings.com
- Understanding Purlins in Construction: A Comprehensive Guide - alsyedconstruction.com
AI-generated content may contain errors. Please verify critical information
