A protective trench system is installed, but the crew excavates below its bottom without approval. What should be checked?
Correct Answer
B) System limit.
Protective systems must be used within their designed or approved limits.
Why This Is the Correct Answer
Protective systems must be used within their designed or approved limits.
Why the Other Options Are Wrong
Option A: Move spoil back.
Move spoil back. may relate to another site control, but it does not remove or guard the excavation protection exposure being tested.
Option C: Protected work zone.
Protected work zone. may relate to another site control, but it does not remove or guard the excavation protection exposure being tested.
Option D: Protective system.
Protective system. may relate to another site control, but it does not remove or guard the excavation protection exposure being tested.
Memory Technique
Excavation Protection lock for Checking Trench-Box: protective is the harm, systems is the guard.
Reference Hint
Study anchor (closed-book): memorize Excavation protection from Cal/OSHA Title 8 Construction Safety Orders; CSLB B General Building. / Cal/OSHA Title 8 excavation protective systems; know the rule or calculation trigger without relying on exam-room lookup.
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