Scour at culvert outlets in mixed bed materials.

Ruff, J. F.; Abt, S. R.; Mendoza, C.; Shaikh, A.; Kloberdanz, R.

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Scour at culvert outlets in mixed bed materials.

1982-09-01
By Ruff, J. F. ; Abt, S. R. ; Mendoza, C.

File Language:

English

Details

Creators:

Ruff, J. F. ; Abt, S. R. ; Mendoza, C. ; Shaikh, A. ; Kloberdanz, R.
Corporate Contributors:

United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
Subject/TRT Terms:
- Culvert outlets
- Scour
Publication/ Report Number:

FHWA/RD-82/011
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

United States. Federal Highway Administration. Office of Research and Development
Description:

"The study of localized scour at culvert outlets has been on-going to control and manage erosion along highway embankments. Herein is presented an investigation of scour at culvert outlets which refines and extends the state-of-the-art of predicting the dimensions of scour holes. Over 100 experiments ranging from 20 to 1000 minutes in duration were conducted in cohesive and non-cohesive bed materials. Culverts having 4-inch (10.2 cm), 10-inch (25.4 cm), 14-inch (35.6 cm) and 18-inch (45.7 cm) diameters were tested with dis- charges from .11 cfs (.003 cms) to 29.13 cfs (.82 cms). Tailwater elevations were maintained at zero, 0.25D and 0.45D +- 0.05D above the culvert inlet where D is the diameter of the culvert. The results yielded a series of empirical relationships expressing the depth, width, length and volume of scour as a function of the culvert diameter and discharge. parameters including the shear number, equivalent depth, pipe shape, soil gradation and extent of scour were investigated. General observations concerning scour, hole formation, growth and stabilization were reported."
Format:

PDF
Funding:

DOT-FH-11-9227
Download URL:

https://rosap.ntl.bts.gov/view/dot/25318/dot_25318_DS1.pdf
File Type:

[PDF - 6.49 MB]
Collection(s):

US Transportation Collection ; Federal Highway Administration
Main Document Checksum:

urn:sha-512:76fbb1ddc19144f85b424667b1232da06e3667c26cc8bf8e7a590430bc45d30cca05732c889e4ebfcd2225336053559ca81edc55369d31264646962328646e3e

File Language:

English

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