NB_210_21_6 - NB 210-21-6 ENG - Draft National Engineering Handbook, Part 634, Hydraulics
NB 210-21-6 ENG - Draft National Engineering Handbook, Part 634, Hydraulics
National Bulletin: 210-21-6   Date: March 16, 2021
Subject: ENG - Draft National Engineering Handbook, Part 634, Hydraulics


Action Required By:   June 28, 2021   
 
Purpose.   To request review and comments on the draft Title 210, National Engineering Handbook, Part 634, “Hydraulics” (210-NEH-634), Chapters 1-6. 
 
Expiration Date.   December 31, 2021  
 
Background.   210-NEH-634 is a new NEH Part that replaces archived NEH Section 5 Hydraulics, dated August 1956. This section presents basic hydraulic principles that apply to the design and operation of soil and water conservation measures.         
 
Explanation.   State Conservation Engineers (and equivalent) are to review the attached draft NEH 634, Chapters 1-6 and provide comments no later than Friday, June 28, 2021. Center engineering staffs are invited to review this document and to submit one set of compiled comments per Center.

Please consolidate comments into one set of compiled comments per State (or equivalent) or Center. An Excel spreadsheet is attached for use in compiling comments with one tab for each Chapter.

Formatting follows the standard NEH series format. Reviewers are asked to focus their review and comments on the technical aspects of the document unless format comments will assist in providing clarity in the final document.

Please submit comments by email to claudia.hoeft@usda.gov or clarence.prestwich@usda.gov  by June 28, 2021.    
 
Contact.   For questions regarding the draft NEH Part 634, please contact Claudia C. Hoeft, National Hydraulics Engineer, at (202) 641-6347; or Clarence Prestwich, National Agricultural Engineer, at (504) 228-2637.   
 
 

 /s/

DIANE GELBURD
Deputy Chief for Science and Technology
 

DRAFT 210-NEH-634-01, “General Concepts” 

DRAFT 210-NEH-634-02, “Hydrostatics”

DRAFT 210-NEH-634-03, “Hydrokinetics”

DRAFT 210-NEH-634-04, “Pipe Flow”

DRAFT 210-NEH-634-05, “Flow Measurement”

DRAFT 210-NEH-634-06, “Hydraulic Modeling”

DRAFT 210-NEH-634 Spreadsheet for Compiling State Review Comments 

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