Question

Unstable objects may be used to support scaffold legs:

A) Always
B)If the scaffold is secured to a stable structure
C) Only on even surfaces
D) Only if there's no alternative

Answer 1

Unstable objects should only be used to support scaffold legs if there's no alternative, and extra precautions must be taken to ensure stability and prevent accidents.

Step-by-step explanation:

The question asks under what circumstances unstable objects may be used to support scaffold legs. The correct answer is: Unstable objects may be used to support scaffold legs only if there's no alternative. It is important to prioritize safety when dealing with scaffolding and the support structure must be as stable as possible to prevent accidents. This means using stable objects whenever available. In the case where there is no alternative, and an unstable object must be used, extra precautions should be taken such as securing the scaffold to a stable structure to prevent potential collapse or injury. When considering the base of support and center of gravity (cg), the stability is increased by widening the base and lowering the cg, similar to the techniques used by individuals in various scenarios like using a cane or when an athlete prepares for action. These concepts are vital in ensuring the safety and stability of temporary structures such as scaffolds.