12 Ceiling Collapse

Question 1

Two broad categories of ceilings:

Answer 1

1. Affixed
2. Suspended

Question 2

During firefighting, a directly affixed ceiling usually collapses in __________________.

Answer 2

Small pieces rather than in one large section

Question 3

What is often the cause of collapse of a directly affixed ceiling?

Answer 3

Water absorption

Question 4

What is the most dangerous ceiling?

Answer 4

The suspended ceiling

Question 5

Reasons for suspended ceilings:

Answer 5

1. In stores: cover prior out-of-fashion old ceiling
2. Top floor of multi-floor dwelling: space for insulating against sun rays
3. Renovated building: Reduce floor height to conserve energy required to heat and cool

Question 6

Three common types of suspended ceilings:

Answer 6

1. Wood truss grid
2. Lightweight metal grid permanently affixed
3. Metal grid system with removable panel ceiling