A fixed glass sidelight is next to a swinging door. Its nearest vertical edge is within 24 in. of the door in the closed position, and the bottom exposed edge is below 60 in. above the floor. What does IBC 2406 generally require?
Correct Answer
A) Safety glazing because it is within the door-adjacent hazardous location
IBC 2406 treats glazing adjacent to doors as a hazardous location when the nearest vertical edge is within a 24 in. arc of the door and the bottom exposed edge is less than 60 in. above the walking surface, subject to exceptions. Other choices ignore the door-adjacent trigger.
Why This Is the Correct Answer
IBC 2406 treats glazing adjacent to doors as a hazardous location when the nearest vertical edge is within a 24 in. arc of the door and the bottom exposed edge is less than 60 in. above the walking surface, subject to exceptions. Other choices ignore the door-adjacent trigger.
Why the Other Options Are Wrong
Option B: Allow annealed glass because the panel is fixed
Choice B gives Annealed glass because the panel is fixed. Its specific error: it points to Annealed glass because the panel is fixed, but.
Option C: Safety glazing only if the glass area exceeds 20 sf
Choice C (Safety glazing only if the glass area exceeds 20 sf) is rejected because Safety glazing only if the glass area exceeds 20 sf is an IBC dimensional value for a different stair, door, or egress condition.
Option D: Treat the condition as requiring no safety glazing if the frame is aluminum
In doors, windows, and glazing, No safety glazing if the frame is aluminum is the wrong selection for Door-adjacent safety glazing: the option shifts to a different trade task; the tested Door-adjacent safety glazing function or field correction is Safety glazing because it is within the door-adjacent hazardous location.
Memory Technique
Link door-adjacent safety glazing to its book condition; a different condition means a different answer than Safety glazing because it is within the door-adjacent hazardous location.
Reference Hint
Open International Building Code 2021 or 2024; use IBC 2021/2024 Section 2406.4.2 glazing adjacent to doors to confirm that IBC 2406 treats glazing adjacent to doors as a hazardous location when the nearest vertical edge is within a 24 in.
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