The base of a ladder should be placed at what fraction of the ladder's working length for safety?

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Prepare for the Glencoe Carpentry Exam. Practice with flashcards and multiple-choice questions, each offering hints and explanations. Equip yourself for success on your test day!

Multiple Choice

The base of a ladder should be placed at what fraction of the ladder's working length for safety?

Explanation:
A stable ladder setup comes from the right lean angle. The safest angle is about 75 degrees, which is achieved when the base is set away from the wall by roughly a quarter of the ladder’s usable length. Placing the base this distance gives a good balance: if you pull the base in too close, the ladder becomes too vertical and can tip backward; if you push it out too far, the feet can slip and the top may be harder to control. Using D = L/4 (where L is the working length) makes the ladder sit at that safe angle, so the base should be about a quarter of the ladder’s working length from the wall.

A stable ladder setup comes from the right lean angle. The safest angle is about 75 degrees, which is achieved when the base is set away from the wall by roughly a quarter of the ladder’s usable length. Placing the base this distance gives a good balance: if you pull the base in too close, the ladder becomes too vertical and can tip backward; if you push it out too far, the feet can slip and the top may be harder to control. Using D = L/4 (where L is the working length) makes the ladder sit at that safe angle, so the base should be about a quarter of the ladder’s working length from the wall.

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