When is a non-self-supporting portable ladder appropriate to use?
A. When you need to reach a height of 12 feet (3.7 meters) and can position a ladder on an uneven work surface
B. When you need to climb to the top of a rail car
C. When you need a job-made ladder for temporary access to a work area until a fixed ladder can be installed
D. When you need to reach a height of 22 feet (6.7 meters) and a stable structure is available to support the ladder

Question

GinnyAnswer · Answer

The appropriate time to use a non-self-supporting portable ladder is when there is a stable structure available to support it, particularly when reaching significant heights like 22 feet. Using the ladder on uneven surfaces, rail cars, or as a temporary solution is unsafe. Prioritizing safety while working at heights is essential. ;

Answered by GinnyAnswer | 2025-07-07

Anonymous · Answer

A non-self-supporting portable ladder should be used when a stable structure is available for support, particularly when reaching heights of 22 feet. It is unsafe to use this type of ladder on uneven surfaces, rail cars, or as a temporary solution. Therefore, the correct option is D: When you need to reach a height of 22 feet and a stable structure is available to support the ladder. 
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