A trapezoidal concrete dam is 27ft. high. The upstream face is vertical and the water is flush with the top, which is 3ft. wide. The coefficient of friction between the base of the dam and the foundation is 0.60. If it is required to have a factor of safety of 3 for overturning and knowing that concrete and water weight 150 pcf and 62,4 pcf, respectively, find: a. The required width of the base; b. The pressures at the toe and at the heel of the dam.

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Highway Drainage

Highway drainage is the process of extracting and regulating the excess surface water on the pavement by giving the desired slope. The construction of a highway drain helps to divert the water present on the surface, and sub-grade by the means of slope. Highway drainage systems are a necessary part of smooth functioning of traffic, since the highway drainage systems provide proper disposal of unwanted substances from the highways.