Question

nccer 22102-12 - heavy equipment safety 57min
the purpose of trench shoring is to ______.

• provide overhead protection for workers
• prevent workers from entering a trench
• prevent cave - ins
• barricade a trench

Explanation:

Trench shoring is a safety measure in construction (related to engineering, a subfield of Natural Science) where structural supports are used. The main purpose of shoring in trenches is to prevent the trench walls from collapsing, i.e., prevent cave - ins. Overhead protection is not the role of shoring (it's for falling objects), shoring doesn't prevent workers from entering (workers need to work in trenches), and barricading is about restricting access, not shoring's purpose.

Answer:

C. prevent cave - ins