Can CNP Iron Be Used for Roof Frames?

In building construction, the choice of roof truss material greatly affects the overall strength and lifespan of the building. One material often considered is CNP steel, also known as channel.

However, the question is: is CNP steel suitable for use as a roof truss? The answer is: yes, as long as it is used correctly and according to the project's technical specifications.

What is CNP Steel?
CNP steel is a lightweight, C-shaped steel profile made of thin steel plate, often galvanized to increase rust resistance. This material is commonly used in light construction such as ceiling trusses, roof purlins, partition posts, and wall frames.

Advantages of CNP Steel for Roof Trusses
1. Lightweight yet Strong
Despite its light weight, CNP steel has high tensile strength and is capable of effectively supporting roof loads, especially when installed with the correct connection system.

2. Rust Resistance
Galvanized CNP steel is corrosion-resistant, making it suitable for outdoor construction such as roofs.

3. Fast and Neat Installation
With its uniform and easy-to-cut profile, CNP steel simplifies the installation process, saving time and labor costs.

4. Suitable for Light Steel Roofs
CNP steel is often used as purlins—structural components that support roof tiles or roof coverings. It is usually installed transversely on the main trusses.

Things to Consider
Although suitable, the use of CNP steel for roof framing still requires several considerations:

Structural calculations must be appropriate for the roof load (including wind and rain loads).

The thickness and size of the CNP steel must be adjusted to the span and type of roof covering.

For large or multi-story buildings, a combination with a stronger steel frame such as WF or H-Beam is usually required.

Use Quality CNP Steel from PT Intisumber Bajasakti
PT Intisumber Bajasakti supplies galvanized CNP steel in various sizes and thicknesses, suitable for roof framing, purlins, and other lightweight structures. Our products have been used by various contractors and national projects.

📞 Consultation and reservations: +6221 66675999
🌐 Official website: www.intisumberbajasakti.com

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