What is the fire proofing method of steel?

There are several fireproofing methods for steel, each with its own advantages and disadvantages. The most common methods include:

Intumescent coatings: Intumescent coatings are applied to the surface of steel and expand when exposed to heat, creating a thick, insulating layer that protects the steel from fire. This method is often used for exposed steel, such as beams and columns.

Spray-on fireproofing (SFRM): SFRM is a mixture of cement, fibers, and water that is sprayed onto the surface of steel. It creates a hard, fire-resistant shell that protects the steel from the fire. This method is often used for hidden steel, such as steel that is behind walls or ceilings.

Board encasement: Board encasement involves attaching fire-resistant boards to the surface of the steel. The boards can be made of a variety of materials, such as gypsum, mineral fiber, or cement. This method is often used for steel that is in exposed areas, such as beams and columns.

Concrete encasement: Concrete encasement involves embedding steel in concrete. The concrete provides a thick, fire-resistant layer that protects the steel from the fire. This method is often used for steel that is in critical areas, such as columns in fire-rated walls.

The choice of fireproofing method for steel will depend on a number of factors, including the type of steel, the location of the steel, and the desired level of fireproofing.