CFI Building Construction & Fire Behavior 2

Question 1

Which building construction type uses exterior walls of noncombustible or limited-combustible materials with a combustible interior?

Accepted Answer

Type III (Ordinary)

Answer

Type III (Ordinary) construction uses noncombustible exterior walls but allows combustible interior framing and components.

Question 2

What phenomenon occurs when superheated gases at ceiling level suddenly ignite, causing simultaneous ignition of all combustible surfaces in a room?

Accepted Answer

Flashover

Answer

Flashover is the near-simultaneous ignition of all exposed combustible material in an enclosure, typically occurring when upper layer temperatures reach 500–600°C.

Question 3

A fire inspector notes that a renovated building has steel columns unprotected by fireproofing. Which hazard does this create?

Accepted Answer

Potential structural collapse due to steel losing strength at elevated temperatures

Answer

Unprotected steel loses approximately 50% of its yield strength at around 1,100°F (593°C), leading to possible structural collapse.

Question 4

In the context of fire behavior, what does 'fuel-controlled fire' mean?

Accepted Answer

Combustion rate is limited by available fuel rather than oxygen

Answer

A fuel-controlled fire has adequate oxygen but limited fuel, so the combustion rate is governed by the amount and arrangement of combustible materials.

Question 5

Which feature of Type IV (Heavy Timber) construction helps it perform well in fire?

Accepted Answer

Large wood members char on the outside, slowing combustion

Answer

Heavy timber members develop a self-insulating char layer that slows the rate of combustion and helps maintain structural integrity longer than lighter wood members.

(CFI) Certified Fire Inspector Practice Test

(CFI) Certified Fire Inspector Practice Test

CFI Building Construction & Fire Behavior 2