Question

A trapezoidal channel is needed for a location where the bed slope is 0.008 ft/ft, discharge is 150 cfs, and the soil is alluvial silt, colloidal. Design a trapezoidal channel with 3:1 side slopes that will meet the limiting velocity if the flow is clear water. Use the information in the limiting velocity table that was distributed in the April 22 class notes.

Gravity: g ൌ 32.2 ft/sec2 Unit weight of water: ? ൌ 62.4 ??/??ଷ Density of water: ? ൌ 1.94 ?????/??ଷ Kinematic viscosity of water: ? ൌ 1.408 ൈ 10ିହ ??ଶ/??? Dynamic viscosity of water: ? ൌ 2.731 ൈ 10ିହ ?? ∙ ???/??ଶ

Answer 1