Forms used to make a concrete basement wall are shown in Fig. P2.81. Each 4-ft-long form is held together by four ties—two at the top and two at the bottom as indicated. Determine the tension in the...

Forms used to make a concrete basement wall are shown in Fig. P2.81. Each 4-ft-long form is held together by four ties—two at the top and two at the bottom as indicated. Determine the tension in the upper and lower ties. Assume concrete acts as a fluid with a weight of 150 lb/ft³.