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18-Env-A2 Hydrology and Municipal Hydraulics Engineering: December 2013

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Conceptual Runoff Models, Pipe Flow in a Concrete Sewer and Elevated Reservoirs
  2. Question 2 Rural Hydrologic Cycle, Storm-Sewer Peaking Factor and Sewer Design Bases
  3. Question 3 Hydrologic Abstractions, Collection-System Components and an IDF-Curve Design Example
  4. Question 4 Stormwater Dry Ponds, Cold-Water Fishery Protection and a Centrifugal Pump Impeller Change
  5. Question 5 Hardy-Cross Pipe Network, Sanitary Sewer Self-Cleansing Velocity and the Harmon Peaking Formula
  6. Question 6 Stormwater BMP Detention Principle, On-/Off-Site Maintenance and Flood-Frequency Curves
  7. Question 7 Trapezoidal Channel Uniform Flow, Specific Energy Over a Bed Rise, and V-Notch Weir Calibration

Start with Question 1 →

National Exams — December 2013 — 04-Env-A2 / Hydrology and Municipal Hydraulics Engineering. 3 hours duration; closed book with a candidate-prepared 8½×11 in double-sided aid sheet; Casio or Sharp approved calculator only. Any five questions constitute a complete paper (first five answers marked, 20 marks each, 100 marks total); all seven are solved below for completeness.

Reference texts. Davis & Cornwell, Introduction to Environmental Engineering (6th ed.) — hydrology, stormwater management and water-demand chapters; Metcalf & Eddy, Wastewater Engineering: Treatment and Resource Recovery (5th ed.) — sanitary sewer hydraulics, Manning/Harmon design formulas; MWH’s Water Treatment: Principles and Design (3rd ed.) — distribution systems, pipe-network analysis and pump selection; Chow, Open-Channel Hydraulics — Manning's n tables and specific-energy theory; Chow, Maidment & Mays, Applied Hydrology — flood-frequency analysis; CCME water quality guidelines — cold-water fishery thermal protection.