Which material is typically used in noncombustible construction?

Steel is typically used in noncombustible construction due to its inherent properties. Noncombustible materials are those that do not ignite, burn, or continue to burn when exposed to fire. Steel boasts several advantages when it comes to fire safety; it can withstand high temperatures without contributing to the fire load, therefore, it helps prevent the spread of flames.

In contrast, plywood, vinyl composite, and wood are combustible materials. Plywood and wood, being organic materials, are susceptible to ignition and can support combustion, leading to significant hazards during a fire incident. Vinyl composite materials can also burn and release harmful fumes when exposed to high heat. Thus, their flammability disqualifies them from being categorized as noncombustible. This makes steel the preferred option for creating structures that need to meet fire safety standards and minimize risks associated with combustion.