Building Construction MCQ with answer and solution

Concept

Fire resistance of different flooring materials depends on their chemical composition; organic or bituminous binders like asphalt have poor fire resistance compared to mineral-based materials like concrete, tiles, and terrazzo.

Step-by-step solution

1. Analyze the given flooring materials: Terrazzo, Tiles, Asphalt, and Concrete. 2. Identify the material properties regarding fire resistance. Terrazzo, tiles, and concrete are non-combustible inorganic materials. 3. Asphalt is a petroleum-based bituminous product which is combustible and melts easily under fire. 4. Conclude that asphalt has the least fire resistance.

Explanation

Asphalt flooring is made from bituminous materials which are highly flammable and soften or melt at relatively low temperatures, giving it the least fire resistance among the options provided. Terrazzo, tiles, and concrete are composed of inorganic, non-combustible mineral aggregates and binders that perform exceptionally well under high temperatures.

Why the other options are wrong

A: Terrazzo is made of cement and marble chips, which are non-combustible and highly fire-resistant. B: Tiles (ceramic or vitrified) are kiln-fired clay/minerals with excellent fire resistance. D: Concrete is an inert mixture of cement, sand, aggregate, and water, offering very high fire resistance.

Shortcut

Remember that petroleum-derived materials (like asphalt) catch fire and melt easily, hence have poor fire resistance compared to stones, tiles, and concrete.

Common mistake

Confusing asphalt with concrete or tiles due to its heavy-duty usage in paving, forgetting that its binder is bituminous (organic).