Question

The fire service looks at how these materials react during a fire and how their ability to resist a load changes during fire conditions. Of importance is the dual concept of mass and fire resistance. The _______ of a material directly affects its fire resistance. Mass is heat resistance and heat resistance is time.

a) Architectural design
b) Mass or surface to mass ratio
c) Material composition
d) Building height

Answer 1

Mass or surface to mass ratio directly affects the fire resistance of a material.

This correct answer is b)

Step-by-step explanation:

The correct answer to the question is b) Mass or surface to mass ratio.

Mass or surface to mass ratio directly affects the fire resistance of a material. The greater the mass or surface area relative to the mass of the material, the better its ability to resist a load and withstand fire conditions.

For example, if we compare a large log and small twigs made of the same mass of wood, the twigs will burn more quickly because they provide a greater surface area for the fire to act upon, resulting in a higher rate of combustion.

This correct answer is b)