What advantage does concrete offer for fire resistance compared to wood?

• A. It is not flammable
• B. It is less expensive
• C. It does not warp
• D. It is lightweight

Answer: (A)

Concrete offers a significant advantage for fire resistance because it is not flammable. This quality allows concrete to withstand high temperatures without igniting or contributing to the spread of fire. While wood can easily catch fire and burn, concrete remains structurally sound, which enhances safety in buildings and any structures where fire resistance is critical.

The other choices reflect attributes that may be relevant in construction materials but do not directly relate to fire resistance. For instance, while some types of concrete could be more expensive than wood, the cost factor does not pertain to its fire-resistant qualities. Additionally, both materials can warp under certain conditions, although typically wood is more prone to warping due to heat exposure. Lastly, although concrete can be lightweight depending on its formulation, this characteristic does not contribute to its fire resistance and can vary significantly based on the specific type of concrete used. Therefore, the non-flammability of concrete makes it distinctly advantageous in applications requiring fire resistance.