A carpenter installs wall-mounted handrails along a wood stair. What height range does the IBC use for handrails measured above stair nosings?
Correct Answer
C) 34 to 38 in.
IBC 1014.2 places handrail height at not less than 34 in. and not more than 38 in. above stair nosings, ramp surfaces, and walking surfaces. Other choices are too low, too narrow, or confuse handrails with guard height.
Why This Is the Correct Answer
IBC 1014.2 places handrail height at not less than 34 in. and not more than 38 in. above stair nosings, ramp surfaces, and walking surfaces. Other choices are too low, too narrow, or confuse handrails with guard height.
Why the Other Options Are Wrong
Option A: 30 to 34 in.
Choice A (30 to 34 in.) is rejected because 30 to 34 in. is an IBC dimensional value for a different stair, door, or egress condition.
Option B: 32 to 36 in.
In wood framing, 32 to 36 in. is the wrong selection for Handrails: 32 to 36 in. is an IBC dimensional value for a different stair, door, or egress condition.
Option D: 42 to 48 in.
Choice D gives 42 to 48 in. Its specific error: 42 to 48 in. is an IBC dimensional value for a different stair, door, or egress condition.
Memory Technique
Treat handrails like a labeled shelf; only the matching condition belongs with 34 to 38 in.
Reference Hint
Open International Building Code 2021 or 2024; use IBC 2021/2024 Section 1014.2 handrail height to confirm that IBC 1014.2 places handrail height at not less than 34 in.
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