Source
National Engineering Handbook Part 634, Chapter 4, Pipe Flow (USDA NRCS, February 2022)
The NRCS handbook chapter on pipe flow, February 2022. Read its equations in the PDF.
This is not law
Not law: a US government engineering handbook (17 USC 105). Hazen-Williams and Darcy-Weisbach in foot and cubic-foot-per-second units.
- Cited as
- National Engineering Handbook Part 634, Chapter 4, Pipe Flow (USDA NRCS, February 2022)
- Currency
- Published Feb 2022
- Pages
- 76
- Official copy
- PDF from the publisher
Worth knowing about this source
A few Greek letters in this chapter (the delta of a length, the nu of kinematic viscosity, the rho of density) come through as characters nobody can type, and the equations are in fonts that do not read at all. Read an equation in the handbook itself before relying on it; the prose around it is ordinary text.
Why the wording is not on this page
This is a US government work, free to quote and cite. The corpus reads it page by page from the official copy, and a citation names a page of it, so this page says what the document is, which edition it is, and links that copy.
How a question cites it
A citation to this document carries the page number of the file this site read, an exact quote, and the anchor of the page it is on, which counts the pages of the file and not the numbers printed on them. You can check every claim against the copy linked above.