Question: 8 . 2 2 A 3 0 - m wide, 4 0 - m long, 8 - m deep construction excavation needs to be made

8.22 A 30-m wide, 40-m long, 8-m deep construction excavation needs to be made in a silty
clay (CL). The groundwater table is at a depth of 2m. The sides of the excavation will be
sloped at an angle of about 1 horizontal to 1 vertical, and no sensitive structures or
other improvements are nearby. Suggest an appropriate method of construction dewa-
tering for this site, and explain the reason for your choice. Include statements of any
assumptions, if any.
8 . 2 2 A 3 0 - m wide, 4 0 - m long, 8 - m deep

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