FLOW AT GRADE-BREAK FROM MILD TO STEEP SLOPES

An empirical equation was determined using dimensional analysis and experimental test data to determine the depth of flow at a grade-brake in a rectangular channel where the slope changes from mild to steep. The ratio of the depth of flow at slope of the downstream reach. The ratio reached a minimum of 0.715 when the downstream slope was steep enough to produce clear separation of the flow with an aerated nappe. The upper limit of 1.0 was approached as the downstream slope approached critical. /ASCE/

• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Weyermuller, R G
  • Mostata, M G
• Publication Date: 1976-10

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 1439-48
• Serial:
  • Journal of the Hydraulics Division
  • Volume: 102
  • Issue Number: H410
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Dimensional analysis; Flow; Slopes
• Uncontrolled Terms: Experimental data; Grades
• Old TRIS Terms: Breaks
• Subject Areas: Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00141786
• Record Type: Publication
• Report/Paper Numbers: ASCE #12458
• Files: TRIS
• Created Date: Dec 22 1976 12:00AM