Bed width and depth relationship

BED WIDTH AND DEPTH RELATIONSHIP

  • Kennedy’s theory does not give any importance to B/D ratio.
  • The very large number of sections with varying B/D ratio and all satisfying the C.V.R. are possible by this theory.
  • But all these sections cannot be equally satisfactory.
  • This drawback of Kennedy’s theory was made good to some extent by Mr.
  • Woods, who gave B/D ratio table for various discharges.
  • In Uttar Pradesh (U.P.) bed width, and depth are related by following equation.

(i) For discharge of the channel up to 15 cumec

\[D= \frac{1}{2}\sqrt{B}\]

(ii) For discharge of 15 cumecs and above depths for various discharges should be as follows.

TABLE

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