Estimate the settlement of the center of the tank, shown in the sketch, due to consolidation of the 20-ft layer of clay.
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- Q # 2. The following are the results of a consolidation test on a sample of a clayey soil. Pressure, o'(kN/m²) e 1.116 25 1.108 50 1.055 100 0.962 200 0.845 400 0.755 800 0.65 1600 0.658 800 0.675 400 0.685 200 Plot the e, log o' curve. b. Using Casagrande's method, determine the preconsolidation pressure. c. Calculate the compression index, Ce, and the ratio of Cy/Cc. a. Note: Use excel for calculation and drawing. Discuss the details in your own words.)Q# 2. The following are the results of a consolidation test on a sample of a clayey soil Pressure, o' (kN/m²) 1.116 25 1.108 50 1.055 100 0.962 200 0.845 400 0.755 800 0.65 1600 0.658 800 0.675 400 0.685 200 a Plot the e, log o' curve. b. Using Casagrande's method, determine the pretonsolidation pressure. Calculate the compression index, C, and the ratio of C/C. C. (Note: Use excel for calculation and drawing. Discuss the details in your own words.)The following are the results of a consolidation test on a sample of a clayey soil. Pressure, o' (kN/m²) 1.113 25 1.106 50 1.066 100 0.982 200 0.855 400 0.735 800 0.63 1600 0.66 800 0.675 400 0.685 200 a. Plot the e-log o' curve. b. Using Casagrande's method, determine the preconsolidation pressure. Calculate the compression index, C, and the ratio of C/C.
- |!;9 ELABORATE Try solving the following problem: Practice Problem: The following are the results of a consolidation test on a sample soil: a. Plot the e-log o' curve b. Using Casagrande's method, determine the preconsolidation pressure. c. Calculate the compression index, Cc e 1.1 1.085 1.055 1.01 0.94 0.79 0.63 Pressure, o' (ton /ft²) 0.25 0.50 1.00 2.00 4.00 8.00 16.00For a clay layer in the field, the following are given: H = 7.5' Po = 0.7 ton/ft2 Po + AP = 2.5 ton/ft? The relationship between e and P (log scale) for the clay is shown below. (5.625 “) e0 = 0.92 13 D.4 0.2 0.5 1.5 2.5 4.5 Pressure, P (log scale), in ton/ft? Calculate the expected settlement due to primary consolidation. Void ratio, eThe results of a laboratory consolidation test on a clay specimen are the following. Pressure, ir (lb/ft²) 500 1.000 2.000 4.000 8,000 16.000 Total height of specimen at end of consolidation (in.) 0.6947 0.6850 0.6705 0.6520 0.6358 0.6252 Given the initial height of specimen = 0.748 in.. G specimen = 95.2 g. and area of specimen = 4.91 in.²: a. Plot the e-log or curve = 2.68. mass of dry b. Determine the preconsolidation pressure c. Calculate the compression index, C.
- no Sieve analysis test on 400 gm of sand was conducted with the following records; Sieve No. 8 14 28 35 70 100 200 pan 2.362 1.168 0.589 0.417 0.295 0.147 0.074 M Diameter (mm) Mass retained (gm) 60 100 72 48 62 18 30 A 60 160 B 280 342 360 390 Total Retained (gm) % finer 85 60 42 30 D 10 2.5 a. What of the values of A, B, C and D. b. Determine the grading characteristics of this soil. c. Classify this soil according to its gradation using USCS method. CThe coefficient of permeability of a sand at a void ratio of 0.62 is 0.03 cm/sec. estimate the coefficient of permeability at a void ratio of 0.48. a. Using Casagrande equation b. Using kozeny - Carman equation.556 TNT N 351 9:33 B/s Water content of soil can, * never be greater than 100% take values only from 0- 100% be less than 0% be greater than 100% Valid range for S S>0 S100 If the sand in in- situ is in its densest state, then the relative density of sand is, zero 1 between 0 and 1 greater than 1 Which of the following is incorrect statement. *
- The total density of sand in an embankment was found to be 1900kg/m^3 and the field water content was 12% . In the laboratory, the density of the solid was found to be 2660 kg.m^3, and the maximum and minimum voids ratio were 0.63 and 0.44, respectively What is the void ratio of the sand? Calculate the relative density of the sand in the field:The following are the results of a consolidation test on a sample of a clayey soil. • Plot the e-log o curve. • Determine the pre-consolidation pressure. • Calculate the compression index, Ce and the ratio of C; /Ce. Pressure, o' (kN/m?) 1.113 25 1.106 50 1.066 100 0.982 200 0.855 400 0.735 800 0.63 1600 0.66 800 0.675 400 0.685 200Subject Geotechnical engineering : soil mechanics A layer soil shown has the following data H1= 3m. K1= 2x10^-2 cm/sec H2= 4m K2= 3.2x10^-2 cm/sec H3= 6m K3= 4.1 x 10^ -2 cm/sec Compute the equivalent coefficient of permeability in vertical direction. Compute the velocity if h= 4m