A straight ladder is set for construction access. Which setup matches the usual 4-to-1 ladder angle rule?
Correct Answer
A) Base 1 ft out for each 4 ft of vertical rise
The 4-to-1 rule places the ladder base about 1 ft out for each 4 ft of height. Tying off does not eliminate the angle requirement.
Why This Is the Correct Answer
The 4-to-1 rule places the ladder base about 1 ft out for each 4 ft of height. Tying off does not eliminate the angle requirement.
Why the Other Options Are Wrong
Option B: Base 4 ft out for each 1 ft of rise
Choice B (Base 4 ft out for each 1 ft of rise) is rejected because Base 4 ft out for each 1 ft of rise is not the OSHA ladder setup, extension, or access dimension cited here.
Option C: Make base flush against the wall the answer for this requirement
In general project requirements, Base flush against the wall is the wrong selection for OSHA ladder pitch: it points to Base flush against the wall, but.
Option D: Any angle if the ladder is tied off
The trap in D is Any angle if the ladder is tied off. That selection is wrong because it answers the OSHA ladder pitch prompt with the wrong practical move.
Memory Technique
Make OSHA ladder pitch a tabbed card: cite the exact condition, then choose Base 1 ft out for each 4 ft of vertical rise.
Reference Hint
Open 29 CFR Part 1926 (OSHA Construction Standards), 1926-2023 / PSI OSHA Excerpts 2025; use 29 CFR 1926 Subpart X - §1926.1053 to confirm that The 4-to-1 rule places the ladder base about 1 ft out for each 4 ft of height.
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