The erector asks what temporary stability load the column anchor-rod assembly must resist. Which OSHA value and eccentricity are specified?
Correct Answer
C) 300 lb at 18 in.
OSHA 1926.755(a)(2) requires the column anchor-rod assembly to resist a minimum eccentric gravity load of 300 lb located 18 in. from the extreme outer face of the column in each direction at the top of the column shaft. Other choices change either the load or the eccentricity.
Why This Is the Correct Answer
OSHA 1926.755(a)(2) requires the column anchor-rod assembly to resist a minimum eccentric gravity load of 300 lb located 18 in. from the extreme outer face of the column in each direction at the top of the column shaft. Other choices change either the load or the eccentricity.
Why the Other Options Are Wrong
Option A: 150 lb at 12 in.
The trap in A is 150 lb at 12 in. That selection is wrong because 150 lb at 12 in. is a different published number than the cited Anchor rod design load value; 29 CFR 1926.755(a)(2) supports 300 lb at 18 in.; Column anchor-rod assemblies must resist a 300 lb eccentric gravity load at 18 in.
Option B: 200 lb at 24 in.
Choice B gives 200 lb at 24 in. Its specific error: 200 lb at 24 in. is a different published number than the cited Anchor rod design load value; 29 CFR 1926.755(a)(2) supports 300 lb at 18 in. The accepted answer is 300 lb at 18 in.
Option D: 500 lb at 18 in.
In metals work, 500 lb at 18 in. is the wrong selection for Anchor rod design load: 500 lb at 18 in. is a different published number than the cited Anchor rod design load value; 29 CFR 1926.755(a)(2) supports 300 lb at 18 in.
Memory Technique
File anchor rod design load under a fastener row: condition first, number or duty second, answer 300 lb at 18 in.
Reference Hint
Open 29 CFR Part 1926, Subpart R - Steel Erection; use 29 CFR 1926.755(a)(2) to confirm that OSHA 1926.755(a)(2) requires the column anchor-rod assembly to resist a minimum eccentric gravity load of 300 lb located 18 in.
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