Compute the settlement of the clay layer caused by primaryconsolidation if the so > Compute the settlement of the clay layer caused by primaryconsolidation pressur o Use cg=cc/5. > Compute the settlement of the clay layer caused by primary consolidation if the pre- cs=cc/5. 4 m 8 m I Sand Sand 6 m Clay 60 kPa Ydry = 16.5 kN/m^3 7GWT Ysat 18.0 kN/m^3 Ysat 20.0 kN/m^3 = e = 0.85 LL = 48%

Compute the settlement of the clay layer caused by primaryconsolidation if the so > Compute the settlement of the clay layer caused by primaryconsolidation pressur o Use cg=cc/5. > Compute the settlement of the clay layer caused by primary consolidation if the pre- cs=cc/5. 4 m 8 m I Sand Sand 6 m Clay 60 kPa Ydry = 16.5 kN/m^3 7GWT Ysat 18.0 kN/m^3 Ysat 20.0 kN/m^3 = e = 0.85 LL = 48%

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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The laboratory consolidation test is conducted on a clay sample. The following data results were obtained P1 =55 kPa P2 = 130 kPa e1= 0.95 e2= 0.80 Thickness of the sample of clay= 35mm Time for 50% consolidation = 3.0 min Tv= 0.197 a. Find the coefficient of volume compressibility b. Determine the coefficient of consolidation if a sample of clay was drained on both sides c. Compute the hydraulic conductivity of the clay
Consolidation test results are provided below, (Hint: C, or C = Ae / log(of/ai') ): 1.2 1.1 1- 0.9 Void ratio 0.8 0.7 0.6 0.5 0.4 1 10 100 1000 Vertical stress (kPa) (log scale) In some of the results an interval is provided. It ccan be possible to get a result between the given values Use the plot and find pre-consolidation pressure (past maximum vertical effective stress) pe' according to Casagrande's method. pe'= .kPa Seç. Find C, Seç. Find C.: Seç. If the tested soil sample is taken at a depth of 5m (ysat=18kN/m) where the groundwater table is located at the surface what is the Over Consolidation Ratio(OCR) (OCR= pclo vo) Seç. Initial height of the specimen is 22mm. What is the final height of the specimen when effective vertical stress is 650kPa? Hint: Use void ratio. Seç. (Result is in mm) What is the consolidation settlement of 2m thick clay layer if initial effective stress is 20kPa and final effective stress is 400kPa. Hint: Poc= Seç. [Ho/(1+einit)]x[C,log(p'/o'init) +…
Q : For the soil profile shown in figure .if a uniformly distributed load, 100 KN/m2, is applied at the ground surface, what is the settlement of the ciay layer caused by consolidation if Ao — 100 KN/m? * 2m » 8 e P u P
Given the soil profile below, estimate the consolidation coefficient of the clay if Ao_z = 500 psf at the middle of the clay. Use one layer for the clay in your calculation. он 10 ft 20 ft וד Incompressible Sand' V Clay sat = 120 pct CR = 0.3 TIT RR = 0.15 Pp = 1776 pst 8 Sat 120 pct
Refer to Figure 2, estimate the primary consolidation settlement in the clay layer. Given: Ag = 85 kN/m²; Hi = 2 m; H2 = 4 m; and H3= 6 m. Soil characteristics are as follows: Sand: ydx 14 kN/m³, Ysat 18 kN/m³ Clay: LL = 54; e = 0.98; Ysat 19 kN/m'; Cs =- Cc 150 kN/m? H3 Sand Clay ョ→
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1. A soil profile is shown in the figure. A uniformly distributed load of 75kPa is applied at the ground surface. The clay is normally consolidated. Compute the compression index Compute the primary consilidation settlement
Water flows through a sand filter as shown on the figure. The soil has a cross sectional area of 0.33 m². d1-d2-d3=0.55 m. Head difference is 0.95 m. Inflow Outflow Soil B Soil C d2 Coefficient of Permeability for Each Soil: Soil A Kax 2.37 x 10-2 cm/s Soil A Kaz 1.64 x 10-³ cm/s Soil B Kbx 1.40 x 10-² cm/s Soil B Kbz 2.79 x 10-³ cm/s Soil C Kcx 3.42 × 102 cm/s Soil C Kcz 3.41 x 10³ cm/s Compute the flow of water through the soils in liters/sec. Use 4 decimal places. 3
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/m2
A large oil storage tank 90 meters in diameter is to be constructed on the soil profile shown in the figure below. The average depth of the oil in the tank is 18 meters, and the specific gravity of the oil is 0.92. Consolidation test showed that the clay is normally consolidated with Ccε = 0.154, Crε = 0.0112, and σ'p = 260 kPa. Estimate the total consolidation settlement of the tank. Neglect any settlements in the sand (ρd,sand = 1.71 Mg / m3). Perform this estimation by: a. Assuming conditions at the mid-depth of the clay are typical of the entire clay layer. b. Dividing the clay layer into four thinner layers with a thickness of 5 meters each, computing the settlement of each thin layer, and summing up using the included equation for sc. Assume that σ'p = σ'vo when σ'vo > σ'p. Hint: the load applied by the tank is given by qo = ϒoilhoil
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Q-1: Estimate the consolidation settlement due to the lowering of the water table from the location No. 1 to the location No. 2 in the soil profile. 1 6 m Sand 2 Ya(sand) =17kN/m3 2 m Ysat(sand) = 19kN /m³ 4 m Clay LL = 40%, e, =0.95 Y sat(clay) =18.6kN/m³ Bedrock