Problem on rectangular section Question 15.5, State the conditions under which the rectangular section of an open channel will be most economical. Derive these conditions. Solution

Question 6 An open channel is to be constructed of trapezoidal section and with side slopes 1 vertical to Find the proportions (i.e., relation between bottom width and depth of flow) for minimum excavation (i.e.,

Question 5 Determine the most efficient section of a trapezoidal channel with side slopes 1 vertical to 2 horizontal, carrying a discharge of 11.25 m3 /s with a velocity of 0.75 m/s. What should be

Question 4 An open rectangular channel laid at a constant slope is required to carry a maximum discharge of 5 m3 /s and a minimum discharge of 1 m3 /s at a constant velocity of

Trapezoidal Channel Question 3 A canal is to have a trapezoidal section with one side vertical and the other sloping at 45 degrees. It has to carry 30 m3 of water per second with a