3 A concrete gravity dam section is shown in the figure. Assuming unit weight of water as 10 kN/m² and unit weight of concrete as 24 kN/m³, the uplift force per unit length of the dam (expressed in kN/m) at PQ is 65 m IN Drain holes P 10 m 40 m 5 m

A drainage canal in the shape of trapezoidal with a bottom width of 2.5 m and side slopes of 1 horizontal to 1.5 vertical, carries water at a depth of 3 m. Find the discharge in cum/sec using Manning's formula.

The results of a CPT test performed for a commercial site are presented in the image (You already classified the soil layer in homework #2). The layer soil type is shown by the legend and corresponding numbers in the figure. A strip footing with a size of 3x30 is built on the surface of the mentioned strata. A 300 kN/m load is acting on the footing. Use Schmertmann's method to compute the settlement of this footing 1 year after construction and 30 years after construction. Please show your calculation for at least one layer if you want use excel software for this problem. For easier calculation use E₂ = 39c- • • Neglect the foundation weight. • Assume the layers are in dry condition. Use unit weight as table below. Layer No. 1 2 3 4 5 6 7 Unit weght kN/m3 17 17 19 18 18.5 18 18

For a rectangular channel that is 4 feet wide, the depth of flow is 3 feet and the flow rate is 27 cfs. What expression for depth of flow for a section downstream that is 2 feet wide, is best represented by the choices below? Oy³ + 3.165y² + 6.214-0 y³ -3.079y² +2.83=0 y³ - 3.003y² +4.169 1.2y3 -0.529y² + +3.56y-8.26=0