Learn More about the WRE Guide

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 Introduction to the Book

This book features 160 comprehensive questions aimed at ensuring you pass the exam on your first try. Each question is educational and designed to cover a wide range of topics, with no straightforward answers. Almost everyone who has purchased this book, studied thoroughly, and taken the exam reports that it made passing significantly easier. The questions are organized into six parts:

• Project Planning
  Covers topics relevant to cost estimating and scheduling, including economic analysis such as present worth and lifecycle cost, and other project management knowledge areas in the 2024 exam specifications.

• Soil Mechanics and Materials
  Includes questions on soil sampling, geotechnical evaluation, slope assessment, consolidation, laboratory tests, and evaluation of pipes and pipe materials, along with other relevant topics.

• Hydraulics – Closed Conduit and Open Channel
  Focuses on fluid mechanics principles, pressure evaluation on gates, viscosity, flow characteristics, the impulse momentum principle, head losses in pipes and channels, pump cavitation, pipe networks, energy diagrams, and various scenarios involving culverts and gutter flow.

• Hydrology, Surface Water, Ground Water & Wells
  Analyzes storm events and runoff methods, including rainfall intensity, pond design, hydrographs, groundwater concepts like aquifers, hydraulic conductivity, Darcy’s law, and Dupuit’s formula.

• Analysis & Design – Water, Wastewater & Quality
  Covers mass conversions, continuity laws, oxygen demand, aeration rates, Monod kinetics for growth modeling, drinking water equivalent levels (DWELs), and chronic daily intake for contaminated waters. Includes wastewater collection and treatment processes, head losses, primary treatment design, and advanced treatment methods.

• Water Distribution Systems
  Discusses distribution and treatment processes, storage, mixing and flocculator design, adsorption and air stripping methods, hardness removal, and chlorination/dechlorination calculations.

• Project Site Work
  Contains questions on excavations, mass haul diagrams, site layout, erosion control, construction safety, drainage channel calculations, and basic horizontal and vertical curves, including retaining walls and lateral pressure hydraulics.

All answers are detailed and well-referenced, linking to the relevant design manuals and codes for your benefit.