What is dewatering in site construction?
Correct Answer
D) Removing or controlling groundwater or stormwater so excavation and subgrade work can proceed
Dewatering is the removal or control of water so excavation, pipe installation, foundation, or subgrade work can be performed safely and to specification. Other choices describe moisture conditioning, surveying, or demobilization.
Why This Is the Correct Answer
Dewatering is the removal or control of water so excavation, pipe installation, foundation, or subgrade work can be performed safely and to specification. Other choices describe moisture conditioning, surveying, or demobilization.
Why the Other Options Are Wrong
Option A: Adding water to backfill to reach optimum moisture, leaving dewatering unverified
Choice A gives Adding water to backfill to reach optimum moisture. Its specific error: the choice would not get the project to Removing or controlling groundwater or stormwater so excavation and subgrade work can proceed, which is the Dewatering result verified by the source.
Option B: Apply surveying final pavement grades to the dewatering condition
Choice B (Surveying final pavement grades) is rejected because the option does not produce the required Dewatering outcome, Removing or controlling groundwater or stormwater so excavation and subgrade work can proceed.
Option C: Removing all erosion controls after paving
In site construction, Removing all erosion controls after paving is the wrong selection for Dewatering: it points to Removing all erosion controls after paving, but.
Memory Technique
Attach dewatering to a badge: remember the function, then the wording Removing or controlling groundwater or stormwater so excavation and subgrade work can proceed.
Reference Hint
Open Pipe and Excavation Contracting, 2011; use the index entry or section for "Construction dewatering" to confirm that Dewatering is the removal or control of water so excavation, pipe installation, foundation, or subgrade work can be performed safely and to specification.
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