Question: A 5 m wide and 12 m deep braced excavation is carried out in sand, as shown in Figure P19.2, where = 18 kN/m

A 5 m wide and 12 m deep braced excavation is carried out in sand, as shown in Figure P19.2, where γ = 18 kN/m³ and ϕ' = 37°. The struts are placed at horizontal spacing of 2.5 m.

a. Determine the strut loads.

b. Determine the required section modulus of the sheet-pile section, assuming σ_all = 170 MN/m².

c. Determine the maximum moment for the middle two wales.

Figure P19.2

5 m 2 m A 3 m B 3 m C 3 m D 1 m m

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