During excavation, the contractor encounters buried concrete not shown in the geotechnical report. The contract has a differing-site-condition notice clause. What should happen first?
Correct Answer
C) Give the required prompt notice before disturbing the condition further, as the contract requires
Differing-site-condition clauses typically require prompt notice before the condition is disturbed so it can be investigated and addressed. Other choices risk losing the ability to verify the condition or remove required work.
Why This Is the Correct Answer
Differing-site-condition clauses typically require prompt notice before the condition is disturbed so it can be investigated and addressed. Other choices risk losing the ability to verify the condition or remove required work.
Why the Other Options Are Wrong
Option A: The contractor should remove it and wait until final payment to mention it
Choice A (Remove it and wait until final payment to mention it) is rejected because the action skips the timing, documentation, or field-control step needed for Differing site condition notice.
Option B: Treat it as a voluntary alternate
In procurement and contracting, Treat it as a voluntary alternate is the wrong selection for Differing site condition notice: it answers the Differing site condition notice prompt with the wrong practical move.
Option D: The contractor should delete all excavation work
Choice D gives Delete all excavation work. Its specific error: it treats Differing site condition notice as optional.
Memory Technique
Link differing site condition notice to its book condition; a different condition means a different answer than Give the required prompt notice before disturbing the condition further, as the contract requires.
Reference Hint
Open Construction Project Management, 5th Ed. (2022); use the index entry or section for "Differing site condition notice" to confirm that Differing-site-condition clauses typically require prompt notice before the condition is disturbed so it can be investigated and addressed.
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