Water begins entering a utility trench while workers are inside. What should happen?
Correct Answer
C) Remove workers until water hazards are controlled and the competent person reevaluates conditions.
Water accumulation can increase cave-in and other hazards; workers need protection before continuing.
Why This Is the Correct Answer
Water accumulation can increase cave-in and other hazards; workers need protection before continuing.
Why the Other Options Are Wrong
Option A: Keep working because water lubricates soil
Choice A (Keep working because water lubricates soil.) is rejected because it points to Keep working because water lubricates soil. but.
Option B: Place spoil closer to the edge
In site construction, Place spoil closer to the edge. is the wrong selection for Trench water hazard: it answers the Trench water hazard prompt with the wrong practical move.
Option D: The site crew should remove the ladder to make room for the pump
Choice D gives Remove the ladder to make room for the pump. Its specific error: the choice would not get the project to Remove workers until water hazards are controlled and the competent person reevaluates conditions.
Memory Technique
Pair trench water hazard with the real field trigger, then choose the response that produces Remove workers until water hazards are controlled and the competent person reevaluates conditions.
Reference Hint
Open Pipe and Excavation Contracting, 2011; use by topic index - site construction fallback to confirm that Water accumulation can increase cave-in and other hazards; workers need protection before continuing.
More NASCLA Questions
Bid instructions require bid security with each sealed bid. Which purpose should the estimator associate with that requirement?
A wood deck surface has 320 sf of coverage. Boards have a 5-1/2 in. actual face width, and the order includes an 8 percent cutting allowance. What linear footage is closest?
Using the dimensions shown for the stabilized construction entrance, what is the plan area?
A reroof area requires 14,720 sf of rigid insulation. Boards are 4 ft by 8 ft, and the order includes 5 percent waste. How many boards are needed?
Two addenda revise the drawings before bid day. What must a responsive bidder normally do with those addenda?
A utility trench is 180 ft long, 3 ft wide, and 7 ft deep with vertical sides inside a trench shield. What excavation volume is required?
A 120 ft long Type C trench is cut with a 4 ft bottom width and a 6 ft depth. If side slopes are 1-1/2 horizontal to 1 vertical, what excavation volume is closest?
A storm pipe run needs 240 ft of bedding, 4 ft wide and 6 in. thick. Including a 10 percent ordering allowance, how many cubic yards of bedding aggregate are needed?
A mass excavation produces 1,180 loose cubic yards of material for off-site disposal. End-dump trucks can haul 18 loose cubic yards per trip. What truck count is required?
An asphalt-shingle roof has a slope of 3:12. Under the IBC low-slope asphalt-shingle provisions, what underlayment arrangement is required?
People Also Study
Business & Financial Management
120 questions · 70% to pass
Contract Administration
60 questions · 70% to pass
Project Management
60 questions · 70% to pass