Principles of Foundation Engineering
9th Edition
ISBN: 9780357684832
Author: Das
Publisher: Cengage Learning US
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Chapter 3, Problem 3.8P
To determine
Find the average peak soil friction angle.
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A soil profile consisting of three layers is shown below. Calculate the values of σ, μ, and σ’ at points A, B, C, and D.
Geotechnical engineering
The results of a constant head permeability test for a fine sand are as follows:
Diameter of the sample = 35 cm
Length of sample = 83 cm
Constant head difference = 59 cm
Time of collection = 310 secs
Weight of water collected = 372 grams
Find the seepage velocity in cm/min. if the void ratio is 0.48. Round off to four decimal places.
Chapter 3 Solutions
Principles of Foundation Engineering
Ch. 3 - Prob. 3.1PCh. 3 - Prob. 3.2PCh. 3 - Prob. 3.3PCh. 3 - Refer to Figure P3.3. Use Eqs. (3.10) and (3.11)...Ch. 3 - Prob. 3.5PCh. 3 - Prob. 3.6PCh. 3 - Prob. 3.7PCh. 3 - Prob. 3.8PCh. 3 - Prob. 3.9PCh. 3 - Prob. 3.10P
Ch. 3 - Prob. 3.11PCh. 3 - Prob. 3.12PCh. 3 - Prob. 3.13PCh. 3 - Prob. 3.14PCh. 3 - Prob. 3.15PCh. 3 - Prob. 3.16PCh. 3 - Prob. 3.17PCh. 3 - Prob. 3.18PCh. 3 - Prob. 3.19PCh. 3 - Prob. 3.20PCh. 3 - Prob. 3.21PCh. 3 - Prob. 3.22PCh. 3 - Prob. 3.23PCh. 3 - Prob. 3.24PCh. 3 - Prob. 3.25PCh. 3 - Prob. 3.26PCh. 3 - Prob. 3.27PCh. 3 - Prob. 3.28PCh. 3 - Prob. 3.29PCh. 3 - Prob. 3.30PCh. 3 - Prob. 3.31P
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- Exercise 1 A soil profile is shown in Figure Calculate the values of o, u, and o' at points A, B, C, and D. Plot the variation of o, u, and o' with depth. Dry sand roundwater table Thickness (ft) Unit weight (Ib/ft) Layer no. Laver IE H = 5 H2 = 6 H3 = 8 Ya = 112 Ysat = 120 Ysat = 125 Sand I II III TTE Figure 1arrow_forwardA dilatometer test was conducted in a sand deposit ata depth of 6 m. The groundwater table was located at a depth of 2 m below the ground surface. Given, for the sand: 3.29 - 14.5 kN/m3 and Yat 19.8 kN/m3. The contact stress during the test was 260 kN/m2. Estimate the soil friction angle, ф".arrow_forwardWater flows at the rate of 0.09 ml/s in an upward direction through a sand sample with a coefficient of permeability of 2.7 × 10^–2 mm/s. The thickness of the sample is 120 mm and the area of cross-section is 5400 mm2. Taking the saturated unit weight of the sand as 18.9 kN/m3, determine the effective pressure in Pa at the bottom of the sample. a. 364 b. 728 c. 182 d. 910arrow_forward
- A soil boring shows the following soil profile and laboratory test results. A piezometer shows the long- term groundwater table is at the ground surface. Stratum I, 0 to 40 ft, clay: Yd= 86 pcf and w = 27.9% Stratum II, 40 to 60 ft, medium-dense fine sand: w = 25% and Yd = 100 pcf Note: the unit weight of water (Yw) is 62.4 pcf. Use the above information to answer the next eight questions. Calculate the total unit weight (y}) of the clay in Stratum I. Answer: Choose... +arrow_forwardPlease check and provide answersarrow_forwardQuestion 16 The results of a constant head permeability test for a fine sand are as follows Diameter of the sample = 33 cm Length of sample 55 cm Constant head difference =74 cm Time of collection 580 secs Weight of water collected = 382 grams Find the seepage velocity in cm/min. if the void ratio is 0 38. Round off to four decimal places. SUS WE Rarrow_forward
- The data from a falling-head test on a silty clay are: Cross sectional area of soil = 1000 mm^2 Length of soil sample = 200 mm Area of stand pipe = 40 mm^2 Head difference at time t = 0 is 500 mm Head difference at time t = 3 min is 300 mm a) Determine the hydraulic conductivity of the soil in cm/sec. b) What is the head difference at time t = 100 sec in mmarrow_forwardPlease solve clearly with explaination. Thanksarrow_forwardBraja Das Principles of Geotechnical Engineering Chapter 7arrow_forward
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