Manual Notice: 2011-1
From: Mark A. Marek, P.E.
Manual: Hydraulic Design Manual
Effective Date: October 01, 2011
Anchor: #SGLFHLNFPurpose
This manual provides guidance and recommended procedures for the design of Texas Department of Transportation drainage facilities. This revision reorganizes and updates the manual content to reflect current policies and to incorporate recent research in the field of hydrology and hydraulics. It also updates examples, streamlines the organization of the manual, and corrects minor errors.
Anchor: #MMGEKHLGContents
The first 5 chapters are completely new chapters. Chapters 6 through 14 are existing chapters in which information has been updated or rearranged, and irrelevant material has been removed. Changes to Chapters 6, 7 and 14 are relatively minor.
Chapter 1 - Manual Introduction
- Anchor: #NOMFMIEI
- Presents organization of the manual and introductory material.
Chapter 2 - Hydraulic Practices and Governing Law
- Anchor: #OHMFFFGH
- Lists the various federal and state laws, regulations, and agencies to be considered in hydraulic design Anchor: #FFNIJGEI
- Provides definitions of policy, standards, and other items, as well as details of the roles and responsibilities in hydraulic design Anchor: #FGNEJFHI
- Provides guidance for responding to drainage complaints, connection to TxDOT structures, and dams.
Chapter 3 - Processes and Procedures in TxDOT Hydrologic and Hydraulic Activities
- Anchor: #MIMELMIE
- Provides guidance on the scope of hydraulic activities, evaluation of risk in hydraulic design, and design activities by project phase from initial planning through PS&E development Anchor: #EGJNFHMI
- Provides guidance on hydraulic documentation and deliverables, including a comprehensive table of the data or documentation, the stage at which it's needed, and where the data is to be stored Anchor: #GNQMHGLH
- Section on Risk has been moved from Chapter 9 (Bridges) to apply to all designs, not just bridges.
Chapter 4 - Hydrology
- Anchor: #KNPLGHKH
- Contains new information and procedures based on recent research Anchor: #ENENIKJI
- The existing information has been reorganized, outdated information has been removed, and references have been updated.
Chapter 5 - NFIP Design of Floodplain Encroachments and Cross Drainage Structures
- Anchor: #KJLNIGJJ
- Provides a description of the National Flood Insurance Program (NFIP), definitions, guidance on TxDOT's responsibility under the NFIP, and detailed procedures for hydraulic designers.
Chapter 6 - Hydraulic Principles
- Anchor: #HTLEHMFJ
- Provides an expanded definition of Froude Number with a discussion on its meaning and importance.
Chapter 7 - Channels
- Anchor: #HFGGHFFL
- Reformatted to improve reader's comprehension Anchor: #MIIILGGE
- Corrects, and updates information; supplementary information has been removed.
Chapter 8 - Culverts
- Anchor: #JTHLKHGM
- The chapter has been reformatted to improve reader's comprehension Anchor: #GFNGKHEN
- Information has been corrected, updated, new information added, and supplementary information has been removed.
Chapter 9 - Bridges
- Anchor: #EJFHNGMG
- The chapter has been reformatted to improve reader's comprehension Anchor: #NJELHGGH
- Information has been corrected, updated, new information added, and supplementary information has been removed Anchor: #MQNLHLGN
- Bridge scour section has been removed and inserted in the Bridge Division Geotechnical Manual. The Geotechnical section is the OPR for bridge scour Anchor: #FLRJEJHM
- Moved section on Risk to Chapter 3 to apply to all designs, not just bridges.
Chapter 10 - Storm Drains
This chapter has not been altered at this time. It will be addressed in the next revision.
Chapter 11 - Pump Stations
- Anchor: #JMHIKMGJ
- The chapter has been rewritten with new information Anchor: #JFGEKEKG
- Information deemed supplementary has been removed.
Chapter 12 - Reservoirs
- Anchor: #FKNFJHNL
- The chapter has been reformatted to improve reader's comprehension Anchor: #UJLHJHGN
- Information has been corrected, updated, new information added, and supplementary information has been removed.
Chapter 13 - Storm Water Management
- Anchor: #MGKMIGFE
- The chapter has been reformatted to improve reader's comprehension Anchor: #JLIHILKF
- Information has been corrected, updated, some new information added, and supplementary information has been removed Anchor: #IIIJLMLM
- Further revision is anticipated because of pending environmental regulations and the implementation of a TxDOT-wide EMS program.
Chapter 14 - Conduit Strength and Durability
- Anchor: #FEGGFJMG
- This chapter has been removed from this manual; questions regarding this subject can be addressed by the Bridge Division.
Contact
Address questions concerning the information contained in this manual to the Roadway Design Section in the Design Division.
Anchor: #GNIEJJNNCopyright Notice
This Hydraulic Design Manual and all future revisions: Copyright ©2011 by Texas Department of Transportation (TxDOT). Published by the Design Division (DES). All rights reserved.
Anchor: #PHMIENKIArchives
Past manual notices are available in a PDF archive.