1- Find the final consolidation settlement 2- Having the final consolidation settlement of (20) cm, find the void ratio corresponding to 50% consolidation.
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- Refer to Figure 7.28. For the construction of an airport, a large fill operationis required. For the work, the average permanent load, (p), on the claylayer will increase by about 70 kN/m2. The average effective overburdenpressure on the clay layer before the fill operation is 95 kN/m2. For the claylayer, which is normally consolidated and drained at top and bottom, H = 5 m, Cc = 0.24, e0 = 0.81, and cv = 0.44 m2/mo.a. Determine the primary consolidation settlement of the clay layer causedby the additional permanent load, (p).b. What is the time required for 90% of primary consolidation settlementunder the additional permanent load only?c. What temporary surcharge, (f), will be required to eliminate the entireprimary consolidation settlement in 6 months by the precompressiontechnique?Given: rw = 0.25 m, rs = 0.35 m, de =4.5 m, cv 5 cvr = 0.3 m2/month, kh/ks 5 2, and Hc = 9 m. Determine: The degree of consolidation for the clay layer causedonly by the sand drains after six months of surchargeapplicationRefer to Figure Q3. Estimate the primary consolidation settlement in the clay layer. Given: Δ? = 85 ??/?2 ?1 = 2 ? ?2 = 4 ? ?3 = 6 ?. Soil characteristics are as follows (use appropriate relations):• Sand: ? = 0.65; ?? = 2.66• Clay: ?? = 54;? = 0.98; ?? = 2.74; ?'c = 150 ??/?2; ?? = 1/6 ?c
- A clay layer in the field is 4.6 m and is drained at the top only. Under a given surcharge, the estimated max consolidation settlements 310 mm. What is the average degree of consolidation for the clay layer when the settlement is 76 mm? A.) 24.5% B.) 35.38% C.) 18.72% D.) 29.65% Pls answer asapDetermine the consolidation settlement ofthe 4-m thick clay layer shown in the figurethat will result from the load carried by thefooting measuring 3 m x 1.5 m in the figure.Assume the clay to be normally consolidatedand the load of footing results to an increasein pressure of 23.2 kPa, 12.22 kPa, and 6.1kPa at the top, mid-height, and bottomportion, respectively of the clay layer.a) Calculate the overburden pressure at thebase of the footing in kPab) Calculate the initial effective stress at themid-height of the clay layerc) Calculate the consolidation settlement ofthe clay layerEstimate the primary consolidation settlement in the claylayer. Given: Δσ = 100 kN/m2; H1 = 4.0 m; H2 =5.5 m; and H3 = 9.5m. Soil characteristics are as Sand, e = 0.60; Gs = 2.55 Clay, LL = 60; e = 0.85; Gs = 2.65; σ'c = 200 kN/m2, Cs = 0.2 Cc Is there any difference if σ'c = zero
- Refer to Figure below. Estimate the primary consolidation settlement in the clay layer. Given: Δσ = 150 kN/m2; H1 = 3 m; H2 = 4 m; and H3= 5 m. Soil characteristics are as follows: • Sand: γdry = 15 kN/m3, γsat = 19 kN/m3 • Clay: LL = 65; e = 0.65; γsat = 18 kN/m3; ; Cs =1/6cc σʹc = 200 kN/m2The uniformly distributed load on theground surface is Δσ. Estimate the primary consolidation settlement of theclay layer given these values:H1 1.5 m, H2 2 m, H3 2 mSand: e 0.55, Gs 2.67Clay: e 1.1, Gs 2.73, LL 45Δσ= 120 kN/m2A 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
- A site has 20 m of saturated clay (saturated density = 1.6 Mg/m3) over hard bedrock. The settlement analysis for the clay under a new structure forecast that the ultimate consolidation settlement will be about 0.2 m. After 9 months, 0.1 m of settlement has occurred. a) What will be the consolidation settlement after 3 years ( 1 yr = 365 days)? b) Estimate the time it will take for the ultimate consolidation settlement of 0.15m to occur? (Use T95 for your estimate) Provide your answer in years.A soil strata can be described as 6 meters of sand underlain by 4 meters of clay withthe water table located 7 meters from the bottom of said strata. The sand has a dry andsaturated unit weight of 14 kN/m3and 18 kN/m3 resp. On the other hand, pertinent clayproperties are saturated unit weight of 19 kN/m3 , void ratio of 0.8 and liquid limit of 40.Compute the primary consolidation settlement considering the following conditions if auniform load of 100 kPa is acting on the soil. If necessary, assume a logical value of Cs.A. The clay is normally consolidated.B. The pre-consolidation pressure is 190 kN/m2C. The pre-consolidation pressure is 170 kN/m2.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