Chapter 16, Problem 16.6P

A layer of soft clay 4 m thick under construction building, the overburden pressure over the center of the clay layer is 300 kPa, Cc = 0.5, G = 2.7, w = 50%. Final consolidation settlement if the increase in pressure due to construction of 100 kPa Pease answer correct and fast but no wrong answer

Q # 5. Discuss in your own words the cylinder spring model for the consolidation settlement in saturated clayey soil.

A deposit of cohesionless soil with a permeability of 0.3 mm/s has a depth of 12 m with impervious ledge below. A sheet pile wall is driven into this deposit to a depth of 8 m. The wall extendsabove the surface of the soil, and a 3 m depth of water acts on one side. Sketch the flow net and determine the seepage quantity. Provide a diagram a.600 ml/s/meter length b.300 ml/s/meter length c.900 ml/s/meter length d.1200 ml/s/meter length

(c) A dam shown in Figure Q1 (c) retains 6m of water. A sheet pile wall on the upstreamside (which is to reduce seepage under the dam) penetrates 4m into a 10m thick of siltysand stratum. Below the silty sand is a thick deposit of clay. Assume that the silty sandis homogeneous and isotropic. (i) Calculate q in cm/s.(ii) Analyze the pore water pressure distribution on the front of the sheet pile (atevery 2m @ at points A, F and G). Given the Nd of points A, F and G are 0.5,1.5 and 3.0 respectively.(iii) Analyze the pore water pressure distribution at the base of the dam. (at every5m @ at points A, B, C, D and E). Given the Nd of points A, B, C, D and E are5.6, 6.7, 8.0, 10.0, 13.0 respectively.(iv) Determine the uplift force under the dam.(v) Calculate the factor of safety against piping. Given Lmin = 0.85m.

Refer to Problem 3.17. Determine the overconsolidation ratio for the clay. Use Eqs. (3.42) and (3.45). Use σ'0 = 1340 lb/ft2.

For the soil profile shown; a) Calculate the settlement due to primary consolidation for 5 m clay layer due to a surcharge of 50 kPa applied at the ground level. The clay is normally consolidated. b) Calculate the time rate of settlement when cv is given as 0.85 m2/year.

The coefficient of permeability of a sand at a void ratio of 0.62 is 0.03 cm/s. Estimate the coefficient of permeability at a void ratio of 0.48 using Casagrande equation.

A deposit of cohesionless soil with a permeability of 0.3 mm/s has a depth of 12 m with impervious ledge below. A sheet pile wall is driven into this deposit to a depth of 8 m. The wall extendsabove the surface of the soil, and a 3 m depth of water acts on one side. Sketch the flow net and determine the seepage quantity. a. 600 ml/s/meter length b. 300 ml/s/meter length c. 1200 ml/s/meter length d. 900 ml/s/meter length

Determine the wet unit weight in (kN/m³) Show solutions please. Thankyou :)