Question

A trapezoidal channel has a bottom width 10 ft and side slope of 2H:1V. It carries a discharge of 250 cfs at a water depth of 4.8ft. The channel is to pass under a highway and a culvert is proposed for a smooth transition from the channel to the culvert. You are asked to design this transition under the following design criteria: First of all, it is important to keep in mind that the culvert shall not act as a choke (shall not block the flow!). 1. If a circular çulvert is desired, design for the required culvert diameter, if the invert'orotheaten is to be level with the channel bed. 4、11

Answer 1

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m u hydralic man doth i longtudinal 〉.lope 2d

5+2d)d at2d万 2