STREAM FLOW MEASUREMENT

MUCH OF OUR CULVERT DESIGN IS STILL BEING DONE BY OUTMODED RULE-OF-THUMB METHODS. IN ORDER THAT WE MAY REMOVE MOST OF THE GUESSWORK WHILE MORE NEARLY SATISFYING THE DEMANDS OF ECONOMY AND SAFETY, THE FOLLOWING METHOD OF PROCEDURE IS PROPOSED. THIS METHOD, WHICH IS ONLY ONE OF MANY APPROACHES TO THE PROBLEM OF STREAM MEASUREMENT, UTILIZES THE MANNING FORMULA BASED ON H.W. MEASUREMENTS OF SELECTED CROSS- SECTIONS. IT WILL GIVE GOOD RESULTS WHERE CAREFUL MEASUREMENTS ARE TAKEN AND CLOSE OBSERVATIONS ARE MADE FOR 'N' AND H.W.M. THIS METHOD IS TO BE USED ON ALL CHANNELS REQUIRING PIPE SIZES OF 48 INCHES IN DIAMETER OR GREATER. IT SHOULD BE BORNE IN MIND THAT SOME CULVERT STRUCTURES IN BRITISH COLUMBIA HAVE BEEN CONSTRUCTED TO PASS VOLUMES OF ABOUT 3600 C.F.S. IN RARE CASES, THEREFORE, IT WILL BE NECESSARY TO MEASURE FLOWS NORMALLY CONSIDERED LARGE ENOUGH TO REQUIRE BRIDGING. WHEN IN DOUBT AS TO THE SELECTION OF A CULVERT OR A BRIDGE, MEASURE THE STREAM FLOW. /CGRA/

• Supplemental Notes:
  • Vol 19, 9 PP, 2 FIG, 1 TAB
• Conference:
  • Western Assoc Can Hwy Officials Proc
• Publication Date: 1966-4

Subject/Index Terms

• TRT Terms: Bridges; Cross sections; Culverts; Flow; Manning requirements; Measurement; Streamflow; Streams
• Subject Areas: Bridges and other structures; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00204068
• Record Type: Publication
• Source Agency: CANADIAN GOOD ROADS ASSOCIATION
• Files: TRIS
• Created Date: Sep 30 1994 12:00AM