A temporary stair handrail is installed along a construction stair. What handrail height range should be checked from the tread surface?
Correct Answer
A) 30 in. to 37 in.
OSHA construction stair handrails are not more than 37 in. and not less than 30 in. above the tread surface. Other choices confuse handrails with guardrails or stairrail top-edge values.
Why This Is the Correct Answer
OSHA construction stair handrails are not more than 37 in. and not less than 30 in. above the tread surface. Other choices confuse handrails with guardrails or stairrail top-edge values.
Why the Other Options Are Wrong
Option B: 24 in. to 30 in.
The trap in B is 24 in. to 30 in. That selection is wrong because 24 in. to 30 in. is a different published number than the cited Temporary handrail height value; 29 CFR 1926.1052(c)(6) supports 30 in.
Option C: 38 in. to 45 in.
Choice C gives 38 in. to 45 in. Its specific error: 38 in. to 45 in. is a different published number than the cited Temporary handrail height value; 29 CFR 1926.1052(c)(6) supports 30 in. to 37 in. The accepted answer is 30 in. to 37 in.
Option D: 42 in. plus or minus 3 in.
Choice D (42 in. plus or minus 3 in.) is rejected because 42 in. plus or minus 3 in. is a different published number than the cited Temporary handrail height value; 29 CFR 1926.1052(c)(6) supports 30 in. to 37 in. The cited answer is 30 in. to 37 in.
Memory Technique
Link temporary handrail height to its book condition; a different condition means a different answer than 30 in. to 37 in.
Reference Hint
Open 29 CFR 1926 OSHA Construction Standards; use 29 CFR 1926.1052(c)(6) to confirm that OSHA construction stair handrails are not more than 37 in.
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