Hydraulics capacities of various types of inlets

Scale models of gutter inlets were evaluated in a titling laboratory test rig. Road crossfall was held constant at 3 percent and road grade was varied from 1% to 20%. Measurements were made of percentage capture and width of flow. For each inlet type percentage capture was presented graphically as a function of approach flow. As a general rule, percentage capture decreased with increasing slope and with increasing approach flow. Width of flow plotted as a function of q3/8s-3/16 falls in a band within + or - 0.2 metre for values of qs less than 0.0055. Results from tests having qs greater than 0.0055 show widths of flow as great as twice that predicted from the above.

• Corporate Authors:

  New South Wales. Department of Public Works. Hydraulic Laboratory

  Manly, New South Wales   

  New South Wales. Department of Public Works. Hydraulics Laboratory

  ,    
• Publication Date: 1978-2

Language

• English

Media Info

• Pagination: 14P
• Serial:
  • Issue Number: 222

Subject/Index Terms

• TRT Terms: Gutters; Highway grades; Hydraulics; Hydrologic phenomena; Laboratory tests; Mathematical models; Measurement; Superelevation; Testing equipment
• ATRI Terms: Discharge; Gradient; Gutter; Hydraulics; Laboratory test; Measurement; Modelling; Test rig; Transverse profile
• Subject Areas: Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 01440628
• Record Type: Publication
• Source Agency: ARRB
• Files: ATRI
• Created Date: Aug 24 2012 11:04PM