A combustible concealed wall cavity is being framed in wood construction. Under the IBC fireblocking rule, what maximum vertical and horizontal interval is used within concealed spaces?
Correct Answer
D) 10 ft
IBC fireblocking provisions require fireblocking in concealed spaces at intervals not exceeding 10 ft both vertically and horizontally. Other choices either tighten or loosen the code interval incorrectly.
Why This Is the Correct Answer
IBC fireblocking provisions require fireblocking in concealed spaces at intervals not exceeding 10 ft both vertically and horizontally. Other choices either tighten or loosen the code interval incorrectly.
Why the Other Options Are Wrong
Option A: 6 ft
In wood framing, 6 ft is the wrong selection for Fireblocking: 6 ft is an IBC dimensional value for a different stair, door, or egress condition.
Option B: 8 ft
The trap in B is 8 ft. That selection is wrong because 8 ft is an IBC dimensional value for a different stair, door, or egress condition.
Option C: 12 ft
Choice C gives 12 ft. Its specific error: 12 ft is an IBC dimensional value for a different stair, door, or egress condition.
Memory Technique
Make fireblocking a tabbed card: cite the exact condition, then choose 10 ft.
Reference Hint
Open International Building Code 2021 or 2024; use IBC 2021/2024 Section 718.2 fireblocking in combustible concealed spaces to confirm that IBC fireblocking provisions require fireblocking in concealed spaces at intervals not exceeding 10 ft both vertically and horizontally.
More NASCLA Questions
Bid instructions require bid security with each sealed bid. Which purpose should the estimator associate with that requirement?
A wood deck surface has 320 sf of coverage. Boards have a 5-1/2 in. actual face width, and the order includes an 8 percent cutting allowance. What linear footage is closest?
Using the dimensions shown for the stabilized construction entrance, what is the plan area?
A reroof area requires 14,720 sf of rigid insulation. Boards are 4 ft by 8 ft, and the order includes 5 percent waste. How many boards are needed?
Two addenda revise the drawings before bid day. What must a responsive bidder normally do with those addenda?
A utility trench is 180 ft long, 3 ft wide, and 7 ft deep with vertical sides inside a trench shield. What excavation volume is required?
A 120 ft long Type C trench is cut with a 4 ft bottom width and a 6 ft depth. If side slopes are 1-1/2 horizontal to 1 vertical, what excavation volume is closest?
A storm pipe run needs 240 ft of bedding, 4 ft wide and 6 in. thick. Including a 10 percent ordering allowance, how many cubic yards of bedding aggregate are needed?
A mass excavation produces 1,180 loose cubic yards of material for off-site disposal. End-dump trucks can haul 18 loose cubic yards per trip. What truck count is required?
An asphalt-shingle roof has a slope of 3:12. Under the IBC low-slope asphalt-shingle provisions, what underlayment arrangement is required?
People Also Study
Business & Financial Management
120 questions · 70% to pass
Contract Administration
60 questions · 70% to pass
Project Management
60 questions · 70% to pass