Accession Number:

AD0723603

Title:

Hydraulic Flow Resistance Factors for Corrugated Metal Conduits,

Descriptive Note:

Corporate Author:

FEDERAL HOUSING ADMINISTRATION WASHINGTON DC

Report Date:

1970-09-01

Pagination or Media Count:

50.0

Abstract:

The report draws upon the full range of currently available data to assemble and present hydraulic resistance factors for corrugated metal conduits of a variety of sizes, shapes, and corrugation forms. Resistance factors and aids are presented for dealing with the geometry of various shapes of corrugated conduits together with procedure guides in tabular and graphical form. While the entire spectrum of culvert and storm drain design is not covered, the report points out the magnitudes of the errors inherent in applying a single resistance factor to corrugated pipes of all sizes, shapes, flow rates, and corrugation forms. The parameters influencing corrugated pipe resistance are discussed, including relative roughness, Reynolds number, corrugation form, 15 and method of manufacture. The resistance factors are presented in terms of both Darcy f and Manning n values, thus permitting the factors to be easily incorporated into most design procedures. Author

Subject Categories:

  • Pumps, Filters, Pipes, Tubing, Fittings and Valves
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE