A material whose core is noncombustible but is covered with a combustible lamination or paint is considered a noncombustible material, provided that the thickness of the paint or lamination does not exceed
A)1/8 in.
B)1/16 in.
C)1 in.
D)1/2 in.
E)1/4 in.

Question

Quizplus · Accepted Answer

The correct answer is A) 1/8 in. This is because building codes and standards typically allow a noncombustible material to be considered as such even if it has a thin layer of combustible material on its surface, as long as this layer does not exceed 1/8 inch in thickness. This allowance is made because a thin layer of this thickness does not significantly contribute to the fire load or fire spread.

A Material Whose Core Is Noncombustible but Is Covered with a Combustible