When designing steel structures, fire safety is crucial to prevent collapse. The main objective is to maintain the steel temperature below a crucial limit. If the temperature gets too high, steel loses its strength and could fail to support the building.
Buildings need to meet specific fire-resistance levels as per national standards. Standard requirements are for the structure to resist fire for 30, 60, 90, 120, 180, or 240 minutes.
We use several methods for fireproofing steel buildings:
- Encasement with Fire-Resistant Boards – These insulate the steel against intense heat.
- Protective Membranes – Horizontal or vertical membranes shield the steel.
- Fire-Retardant Sprays – These add a flame-resistant layer to the steel.
- Intumescent Coatings – These swell when hot, forming a protective barrier.
The aim is to reduce how quickly the steel heats up, keeping its strength during the required fire-resistance period. Properly fireproofed, steel buildings can endure fires for a prolonged time.