[ANSWERED] 1. For the concrete dam shown subjected to water pressure in Figure P7–27, determine the principal..

1. For the concrete dam shown subjected to water pressure in
Figure P7–27, determine the principal stresses. Let E = 3:5
10
6
psi and n = 0:15. Assume plane strain conditions. Perform the analysis for
self-weight and then for hydrostatic (water) pressure against the dam vertical
face as shown.
2. Determine the stresses in the wrench shown in Figure
P7–28 on the next page. Let E = 200 GPa and n = 0:25, and assume uniform
thickness t = 10 mm.