A 36 ft. deep excavation is supported by a sheet pile system. Strut bracing and walers are located at the surface, 12 ft. below the surface, and 24 ft. below the surface. The strut bracing is on 16 ft. horizontal centers. The soil is a silty sand with g = 110 pcf, c = 0, and f = 300. A. What would the soil pressure distribution be for the design of the support system described above. B. Ignore the values obtained in a) above and assume the maximum soil pressure is 1600 psf. Compute the maximum shear in kips and bending moment in kip-ft. in a unit width of sheetpile. Consider the lower hinge point to be 3’ below the bottom of the excavation. Draw neat freebody, shear and moment diagrams. Label the drawing with all significant values
A 36 ft. deep excavation is supported by a sheet pile system. Strut bracing and walers are located at the surface, 12 ft. below the surface, and 24 ft. below the surface. The strut bracing is on 16 ft. horizontal centers. The soil is a silty sand with g = 110 pcf, c = 0, and f = 300.
A. What would the soil pressure distribution be for the design of the support system described above.
B. Ignore the values obtained in a) above and assume the maximum soil pressure is 1600 psf. Compute the maximum shear in kips and bending moment in kip-ft. in a unit width of sheetpile. Consider the lower hinge point to be 3’ below the bottom of the excavation. Draw neat freebody, shear and moment diagrams. Label the drawing with all significant values
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