Aerial Ladder Practice Test 2025 – Complete Exam Prep

Question: 1 / 400

What factor most critically affects the stability of an aerial ladder?

The angle of the ladder

The type of extension used

The surface on which the ladder is positioned

The stability of an aerial ladder is most critically influenced by the surface on which it is positioned. A ladder set up on a stable, level surface is significantly more secure than one placed on an uneven or unstable ground. If the surface cannot support the weight of the ladder and any personnel or equipment on it, the ladder risks tipping over or collapsing.

Factors like the angle of the ladder and the type of extension used do contribute to stability but are secondary to the fundamental necessity of a solid, even base. The weight of personnel on the ladder is also important, as excess weight can compromise stability; however, if the ladder is not firmly positioned on a suitable surface, both the angle and the weight of individuals will become less relevant. The foundation is critical, as it directly affects all other parameters of ladder safety and stability.

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The weight of the personnel on the ladder

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