A water-filled tank load is checked before it is placed on a housekeeping pad. What weight per gallon should be used for water?
Correct Answer
D) 8.34 lb/gal
Water weighs approximately 8.34 lb per gallon. Other choices confuse gallons per cubic foot with weight or use nonmatching rounded values.
Why This Is the Correct Answer
Water weighs approximately 8.34 lb per gallon. Other choices confuse gallons per cubic foot with weight or use nonmatching rounded values.
Why the Other Options Are Wrong
Option A: 6.24 lb/gal
The trap in A is 6.24 lb/gal. That selection is wrong because 6.24 lb/gal is a different published number than the cited Water weight value; Water weight conversion supports 8.34 lb/gal; Water weighs approximately 8.34 lb/gal.
Option B: 7.48 lb/gal
Choice B gives 7.48 lb/gal. Its specific error: 7.48 lb/gal is a different published number than the cited Water weight value; Water weight conversion supports 8.34 lb/gal. The accepted answer is 8.34 lb/gal.
Option C: 10.0 lb/gal
Choice C (10.0 lb/gal) is rejected because 10.0 lb/gal is a different published number than the cited Water weight value; Water weight conversion supports 8.34 lb/gal. The cited answer is 8.34 lb/gal.
Memory Technique
Link water weight to its book condition; a different condition means a different answer than 8.34 lb/gal.
Reference Hint
Open Mechanical and Electrical Systems for Construction Managers, 4th Ed., 2024; use the index entry or section for "Water weight conversion" to confirm that Water weighs approximately 8.34 lb per gallon.
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