Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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Question
Chapter 3, Problem 3.2CTP
(a)
To determine
Calculate the dry unit weight of the fill before and after compaction.
(b)
To determine
Calculate the final height of the fill after compaction.
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9. The results of a Standard Proctoretest is tabulated as follows: (CHECK PICTURE)
Determine the maximum dry unit weight of compaction
Determine the void ratio at the optimum moisture content Gs = 2.68
Determine the optimum moisture content
Determine the degree of saturation at the optimum moisture content
A 3-m high sandy fill material was placed loosely at a relative density of 55%. Laboratory studies indicated that the maximum and minimunm void ratios of the fill material are 0.94 and 0.66, respectively. Construction specifications re- quired that the fill be compacted to a relative density of 85%. If G, = 2.65, determine: Dry unit weight of the fill before and after compaction Final height of the fill after compaction a. b. 202
For a given sandy soil, emax = 0.75, emin = 0.46, and Gs = 2.68. If the relative density of the soil Dr = 78% and its water content is 9%, determine the following:a) In situ void ratiob) Moist unit weight of compaction in KN/cu.mc) Dry unit weight in KN/cu.m
Chapter 3 Solutions
Principles of Geotechnical Engineering (MindTap Course List)
Ch. 3 - Prob. 3.1PCh. 3 - Prob. 3.2PCh. 3 - Prob. 3.3PCh. 3 - Prob. 3.4PCh. 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 - For a given sandy soil, emax = 0.75 and emin =...Ch. 3 - For a given sandy soil, the maximum and minimum...Ch. 3 - Prob. 3.27PCh. 3 - Prob. 3.28PCh. 3 - Prob. 3.29PCh. 3 - Prob. 3.1CTPCh. 3 - Prob. 3.2CTPCh. 3 - Prob. 3.3CTP
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- 4.1.5 A 2m high sandy fill material was placed loosely at a relative density of 47%. Laboratory studies indicated that the maximum and minimum void ratios of the fill material are 0.92 and 0.53, respectively. Construction specifications required that the fill be compacted to a relative density of 80%. If Gs = 2.65 determinea) the dry unit weight of the fill before and after compactionb) the final height of the fill after compactionarrow_forwardA clay fill has a bulk density of 1.8 g/cc. If the moisture content is 17.8% and the Gs = 2.70,find the degree of saturation.arrow_forwardA loose, uncompacted sand fill, 6 feet deep has a relative density of 40%. Laboratory tests indicate e_min = 0.46 and e_max = 0.9. Sand specific gravity = 2.65. Find dry unit weight of the sand fill.arrow_forward
- 3. The following table lists the results of a standard Proctor assay. Determine the maximum dry compaction density and the optimum moisture content. Also obtain the void ratio and degree of saturation for optimum moisture content. Assume Gs = 2.68.arrow_forward4. A silty sand has a void ratio of in the loosest condition equal to 0.86 and a void ratio of 0.30 in the densest condition. If the relative density of the sand is 54%, calculate the porosity and the specific gravity if the sand has a dry unit weight of 16.85 kN/m³.arrow_forwardA soil sample has a dry unit weight of 17.92 kN/M3 and a void ratio of 50% .Compute the hydraulic gradient of the quicksand condition .arrow_forward
- The bulk unit weight of the soil is 16.680 kN/m3 at a saturation of 36.870 % and the effective unit weight is 9.580 kN/m3. If the maximum and minimum void ratio of the soil is 0.880 and 0.390, respectively, determine the following: max dry unit weight , relative density , saturated unit weightarrow_forwardA) What is the value of the natural water content in percentage?B) What is the value of the in-situ void ratio?C) What is the value of the degree of saturation in percentage?arrow_forwardA sample of silty clay has a volume of 14.88 cm3, a total weight of 28.81 gms, a dry weight of 24.83 gms and a specific gravity of 2.7. Determine the void ratio and the degree of saturationarrow_forward
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