For a 12' extension ladder leaning against a wall, bottom should be how far from the wall?

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Study for the NOCTI Plumbing Test. Prepare with flashcards and multiple choice questions, each question comes with hints and explanations. Ensure your success on the exam!

Multiple Choice

For a 12' extension ladder leaning against a wall, bottom should be how far from the wall?

Explanation:
Safe ladder setup relies on the 4-to-1 rule: the base should be about one quarter of the ladder’s length away from the wall, giving a about 75-degree angle. For a 12-foot extension ladder, that means the bottom should be 3 feet from the wall. This position keeps the ladder stable and prevents it from slipping outward or tipping backward. If the base is too close, the climb becomes too steep and danger of tipping increases; if it’s too far, the angle is too shallow and the top can slip or the user can lose balance.

Safe ladder setup relies on the 4-to-1 rule: the base should be about one quarter of the ladder’s length away from the wall, giving a about 75-degree angle. For a 12-foot extension ladder, that means the bottom should be 3 feet from the wall. This position keeps the ladder stable and prevents it from slipping outward or tipping backward. If the base is too close, the climb becomes too steep and danger of tipping increases; if it’s too far, the angle is too shallow and the top can slip or the user can lose balance.

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