When using an extension ladder leaned against a wall, the recommended angle places the base of the ladder approximately what fraction of the working length away from the wall?
Explanation
Section 3276(e)(9) states it as a fraction: the horizontal distance from the top support to the foot of the ladder is one-quarter of the working length - the length along the ladder between the foot and the top support. That is the 4-to-1 rule, and it works out at roughly 75 degrees. Half the working length (a) puts the base so far out that the foot slides once weight comes onto the lower rungs. The full working length (b) lays the ladder nearly flat. And a ladder set directly against the wall with no offset (d) tips backwards as soon as the climber leans out or steps off at the top.
Law Reference: 8 CCR §1675(b); §3276(e)(9); 29 CFR 1926.1053(b)(5)(i)This topic, taught in full in the CSLB Law & Business guide. CSLB Law & Business — Complete Study Guide (2026) — PDF + EPUB, $24.99 · 14-day refund →
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