Hydraulic Design Manual.pdf

Taken from Purpose: Hydraulic facilities include open channels, bridges, culverts, storm drains, pump stations, and storm-water quantity and quality control systems. Each can be part of a larger facility that drains water. In analyzing or designing drainage facilities, your investment of time, expense, concentration, and task completeness should be influenced by the relative importance of the facility. This manual provides procedures recommended by the Texas Department of Transportation (TxDOT) for analyzing and designing effective highway drainage facilities.


  • Chapter 1: Manual Introduction – Overview of the material covered in this manual.
  • Chapter 2: Policy and Guidelines – Considerations regarding highway drainage design for TxDOT.
  • Chapter 3: Documentation – Formal documentation required by highway drainage analysis and design.
  • Chapter 4: Data Collection, Evaluation, and Documentation – Data sources and data management during highway drainage analysis and design.
  • Chapter 5: Hydrology – Methods used by TxDOT for discharge determination or estimation, guidelines and examples for development of runoff hydrographs, and discussion of design frequency requirements and considerations.
  • Chapter 6: Hydraulic Principles – Basic hydraulic concepts and equations for open channels, culverts, and storm drains.
  • Chapter 7: Channels – Overview of channel design, methods, and guidelines governing location and need to subdivide cross sections.
  • Chapter 8: Culverts – Discussion of culvert analysis and design procedures and concerns, equations for various culvert operating conditions, and appurtenances such as improved inlets and erosion velocity protection and control devices.
  • Chapter 9: Bridges – Overview of stream-crossing design, bridge hydraulic considerations, bridge scour and channel degradation concerns, and design by risk assessment.
  • Chapter 10: Storm Drains – Discussion of storm drain planning, components, calculation tools, and other guidelines.
  • Chapter 11: Pump Stations – Discussion of the function of pump stations and flood routing approach.
  • Chapter 12: Reservoirs – Overview of factors affecting highways either crossing or bordering reservoirs.
  • Chapter 13: Storm Water Management – Guidance on storm water management practices, including erosion and sediment control, maintenance of erosion control measures, storm water runoff collection and disposal, and storm water pollution abatement.
  • Chapter 14: Conduit Strength and Durability – Information on conduit durability, estimating service life, classes of bedding for reinforced concrete, RCP strength specifications, and jacked pipes.




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