IBC Means of Egress 2 — Questions and Answers
Question 1: According to IBC Table 1005.1, what is the minimum width per occupant (egress capacity factor) for stairways?
- 0.1 inch per occupant
- 0.2 inch per occupant
- 0.3 inch per occupant (Correct answer)
- 0.4 inch per occupant
Correct answer: 0.3 inch per occupant
IBC Table 1005.1 assigns a factor of 0.3 inch per occupant for stairways, which is higher than the 0.2 inch per occupant factor for level egress components.
Question 2: What is the maximum exit access travel distance permitted in a fully sprinklered Group A (assembly) occupancy per IBC Table 1017.2?
- 150 feet
- 200 feet
- 250 feet (Correct answer)
- 300 feet
Correct answer: 250 feet
IBC Table 1017.2 permits a maximum travel distance of 250 feet in a sprinklered Group A occupancy.
Question 3: When two exit access doorways are required from a room, IBC Section 1007.1.1 requires they be separated by at least what fraction of the room's maximum overall diagonal dimension?
- One-quarter
- One-third
- One-half (Correct answer)
- Two-thirds
Correct answer: One-half
IBC Section 1007.1.1 requires the two doorways to be separated by not less than one-half the length of the maximum overall diagonal dimension of the room.
Question 4: What is the maximum dead-end corridor length permitted in a non-sprinklered building under IBC Section 1020.4?
- 20 feet (Correct answer)
- 30 feet
- 40 feet
- 50 feet
Correct answer: 20 feet
IBC Section 1020.4 limits dead-end corridors in non-sprinklered buildings to 20 feet; sprinklered buildings may extend to 50 feet.
Question 5: What is the minimum illumination level at the floor of a means of egress required by IBC Section 1008.2.1?
- 0.5 foot-candle
- 1 foot-candle (Correct answer)
- 2 foot-candles
- 5 foot-candles
Correct answer: 1 foot-candle
IBC Section 1008.2.1 requires a minimum illumination level of 1 foot-candle measured at the floor level throughout the means of egress.
Question 6: How many exits are required for a story with an occupant load between 501 and 1,000 persons in a Group M (mercantile) occupancy per IBC Table 1006.3.3?
- 2
- 3 (Correct answer)
- 4
- 5
Correct answer: 3
IBC Table 1006.3.3 requires 3 exits for a Group M occupancy story with an occupant load between 501 and 1,000 persons.
Question 7: What is the maximum common path of egress travel permitted in a fully sprinklered Group B (business) occupancy per IBC Table 1006.2.1?
- 75 feet
- 100 feet (Correct answer)
- 125 feet
- 150 feet
Correct answer: 100 feet
IBC Table 1006.2.1 allows a maximum common path of 100 feet in a sprinklered Group B occupancy, compared to 75 feet without sprinklers.
IBC Means of Egress 2
According to IBC Table 1005.1, what is the minimum width per occupant (egress capacity factor) for stairways?