unless made in entirely stable rock, at what depth is a protective system required for a trench? select the…

unless made in entirely stable rock, at what depth is a protective system required for a trench? select the 2 answer options that apply. any depth if the competent person says so 5 feet and greater only at depths greater than 10 feet only at depths greater than 20 feet

unless made in entirely stable rock, at what depth is a protective system required for a trench? select the 2 answer options that apply. any depth if the competent person says so 5 feet and greater only at depths greater than 10 feet only at depths greater than 20 feet

Answer

Brief Explanations:

In construction - related safety standards, if a trench is not in entirely stable rock, a protective system is required at 5 feet and greater depth. Also, a competent person can determine that a protective system is needed at any depth based on site - specific conditions.

Answer:

A. Any depth if the competent person says so B. 5 feet and greater