Practice questions mapped to all 12 knowledge areas on the NCEES PE Civil WRE depth exam. Figure-based questions with worked explanations, code references, and full solution steps.
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A rectangular open channel has a bottom width of 3 m and carries a flow of 12 m³/s at a depth of 2 m. The Froude number for this flow is most nearly:
A 300 mm diameter water main has a Hazen-Williams C-factor of 120. If the flow rate is 0.05 m³/s and the pipe length is 500 m, the head loss due to friction is most nearly:
An activated sludge wastewater treatment plant receives an average flow of 15,000 m³/day with influent BOD of 200 mg/L. If the treatment efficiency is 90%, the mass of BOD removed per day is most nearly:
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