Cee 220homework assignment no. 8spring 2019problem setfor all problems, write a problem statement, provide sketches, and comment on your thought process. draw free body diagrams as applicable.1.bending of retaining wallcantilever concrete retaining walls are commonly used to hold water or soil pressures. the figureshown below indicates an application of such concrete walls in water reservoir construction. such wallsshould be designed in such a way no tension stress occurs in the wall. the retaining wall shown in thefigure can be simplified as a rectangular solid concrete wall. determine the minimum thickness of thewall, if there is no tension at the base of the wall. (γwater