Forms used to make a concrete basement wall are shown in Fig. P2.85. 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 \(150 \mathrm{lb} / \mathrm{ft}^{3}\).

Figure P2.85

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Tie Concrete 10 in. 1 ft T 10 ft Form- 1 ft