Practical Method for Calculating Contraction Scour

by E. V. Richardson, (F.ASCE), Resource Consultants & Engineers, Inc, Ft. Collins, United States,
J. R. Richardson, (M.ASCE), Resource Consultants & Engineers, Inc, Ft. Collins, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

Total scour at bridge crossing waterways consists of long-term aggradation or degradation of the streambed, contraction scour and local scour at the piers and abutments. This paper will present practical equations for computing live-bed or clear-water contraction scour. With live-bed conditions, both equations need to be used and the smaller scour depth used.

Subject Headings: Scour | Bridge abutments | Hydraulic contraction | Wave velocity | Wave measurement | Waterways | Water waves

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