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Z vs C Sections (and Why You Need Both in Your Steel Building)

Aug. 26, 2024

Z vs C Sections (and Why You Need Both in Your Steel Building)

How Are C and Z Sections Used in a Steel Building?

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IN BRIEF

C and Z sections are generally used as roof purlins or wall girts, helping to create the main &#;skeleton&#; of your building that other materials are fixed to.
C purlins are more lightweight and are normally used to support walls and floors.
Z purlins are stronger and used for roofing and walls.
All our structural steel buildings use heavy RHS I and H beams, along with web trusses formed out of RHS & SHS. However, C and Z sections are also used as a lighter alternative for specific areas where load-bearing is less of an issue, and a reduction in overall weight benefits the final structure.
Reducing the weight of the building means less steel, and less material cost &#; you can save money through efficient structural engineering.

Both C and Z sections are commonly used in steel structures. Manufactured from GALVASPAN® steel, these hot-dipped zinc-coated structural steel sections are roll-formed into purlins for commercial and industrial buildings.

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Made with a high-tensile steel substrate, GALVASPAN® steel C and Z sections are strong, durable and highly corrosion resistant. Their purpose is to support the roof and wall materials, allowing connections between the main portal frame and the cladding materials.

C and Z sections are generally used as roof purlins or wall girts, helping to create the main &#;skeleton&#; of your building. When used in the roof, Z purlins provide support and transfer forces down through the columns and into the footings, creating a structurally sound building. C sections are used along the eaves to help support the guttering.

Both C and Z sections are fixed to the portal frame, supporting the weight of wall materials and roof components such as Colorbond sheeting and any solar panels or HVAC systems. Roof purlins also help support environmental loads such as the weight of snowfall.

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