Steel universal columns and parallel flange channels are essential components in the structural frameworks of many buildings. They provide load-bearing support and can often support loads that are many times their weight, contributing to their popularity. Given the important role that they play, ensuring that they are not only durable but also fire resistant is essential for safety. In this post, we debunk some common misconceptions about steel’s fire performance and take a closer look at whether steel universal columns and parallel flange channels are indeed fire-resistant.
How Steel Reacts to Fire
Steel has a very high melting point of between 1300°C and 1500°C, depending on the particular alloy composition. Many people tend to think that this makes steel fireproof. However, that is a common misconception and simply not the case. In reality, high temperatures can severely weaken steel’s structural integrity long before it reaches its melting point. At around 600°C, steel begins to lose about 50% of its strength, with this loss of strength increasing as the temperature rises. This can lead to cases where steel structural supports begin to bend or collapse under heavy loads and high heat.
Fire Resistance of Universal Columns and Parallel Flange Channels
Given that universal columns and parallel flange channels are most commonly used to provide structural support, ensuring that they are fire-resistant is an important consideration. Without adequate fire protection, these steel components can weaken under extreme heat. As such, protective measures should be incorporated to help improve the overall fire resistance of the building’s structural components. By incorporating fire protection strategies, you will also be able to comply with fire safety regulations and building codes. Some methods you can use to improve the fire resistance of universal columns and parallel flange channels include:
- Fireproof Coatings: Fireproof coatings such as intumescent paints can expand when they come into contact with high heat, helping to protect the underlying steel from the fire.
- Encasement: By encasing steel in more fire resistant materials such as concrete, gypsum board or fire resistant cladding, you can protect the steel while still enjoying the structural benefits that it provides.
- Fire Resistant Alloys: Modern alloy technology has allowed for the development of steel alloys with higher fire resistance properties. This enables them to withstand higher temperatures without losing their strength.
Get Your Steel from RW Steel
RW Steel is the leading supplier of steel universal columns and parallel flange channels in Melbourne, and we have been supplying steel to commercial and residential construction projects for decades. We offer a variety of sizes, including universal columns in sizes 100UC14.80, 150UC23.40, and up to 250UC72.90, as well as parallel flange channels in sizes 100PFC, 150PFC and 200PFC22.9. We also provide free on-site cutting services, ensuring that any steel you purchase from us is cut to the exact measurements you require. To find out more about the products and services we offer, simply contact us today!
Image Source: UK Structural Steels Ltd