1.A sample of moist soil has a volume of 40.5 cc mass weight of 59.2 gms. After drying it has a mass weight of 48.3 grams. The specific gravity of the solids are 2.68. Compute the degree of saturation, water content and void ratio.
2.The jib crane is supported by a pin at c and a rod at ab if the load has a mass of 2Mg with its com located at g determine the horizontal and vertical components of the reaction at the pin c and the force developed in rod ab on the crane when x=5m
3.Determine flow rate in a series pipe system given that roughness value and dimension(diameter and length) of pipes.
4.A 6 inch diameter water main in your town has become very rough due to rust and corrosion. It has been suggested that the flowrate through this pipe can be increased by inserting a smooth plastic liner into the pipe. Although the new diameter will be smaller, the pipe will be smoother. Will such a procedure produce a greater flowrate? List all assumptions and all calculations.