Which method of protection involves vertical sidewalls with horizontal struts?
A. Trench boxes
B. Sloping
C. Benching
D. Spoiling
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Answer
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Step 1:I'll solve this problem step by step:
Step 2:: Understand the Protection Methods
Protection methods in excavation safety are designed to prevent cave-ins and protect workers in trenches and excavations.
Step 3:: Analyze the Description
The problem describes a protection method with: - Vertical sidewalls - Horizontal struts (supports crossing the width of the trench)
Step 4:: Evaluate the Options
A. Trench boxes: These are rigid structures with vertical sides and horizontal cross-braces that protect workers by preventing soil collapse B. Sloping: Involves angling the trench walls at a safe slope to prevent collapse C. Benching: Creates step-like horizontal cuts in the trench walls D. Spoiling: Refers to removing excavated material from the trench site
Step 5:: Match the Description
The description precisely matches the characteristics of trench boxes: - Vertical sidewalls ✓ - Horizontal struts ✓
Final Answer
Trench boxes Explanation: Trench boxes are protective systems with vertical sidewalls and horizontal cross-braces designed to prevent soil cave-ins and protect workers during excavation activities.
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