Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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Chapter 6, Problem 6.3P
To determine
Find the zero–air–void unit weights for a soil at different moisture contents.
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The weight of a chunk of moist soil is 208 g and the volume of the sil chunkmeasured before drying is 120 cubic cm. After being dried out in the oven, the weight of the dry soil is 170 grams. Use Gs=2.65a. Compute the water content of the soil.b. Compute the void ratio.c. Compute the degree of saturation.
find the following:
a. What is the value of the percent passing for sieve with 2 mm. opening in percentage?
b. What is the value of the percent passing for sieve with 150 μm. opening in percentage?
c. What is the value of the Effective Size of soil in mm.?
d. What is the value of the coefficient of gradation?e.What is the value of the coefficient of uniformity?
f. What are the percentages of gravel, sand, and Fines using the limits indicated by USCS?
g. What are the percentages of gravel, sand, silt and clay using the limits indicated by MIT?
h. What are the percentages of gravel, sand, silt and clay using the limits indicated by AASHTO?
i. What are the percentages of gravel, sand, silt and clay using the limits indicated by USDA?
5.5 The modified Proctor test (ASTM D 698, method C) was performed for
a soil with G, = 2.70, and the results are as follows:
Moist Weight
Content, % in Mold, gf
Water
6.5
3250
9.3
3826
12.6
4293
14.9
4362
17.2
4035
18.6
3685
(a) Plot the Ya versus w relation.
(b) Determine Ya,max and wopt-
(c) Calculate S and e at the maximum dry unit weight point.
Chapter 6 Solutions
Principles of Geotechnical Engineering (MindTap Course List)
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- The volume of the soil measured before drying is 120cc. The moist soil is 215g and dried weight is 162g. If the void ratio is 0.889, what is the approximate specific gravity of the soil? Choices: A. 2.28 B. 2.62 C. 2.55 D. 2.42arrow_forwardThe field wt of soil sample is 1900 kg/m³and the unit wt of the soil particle is 2660 kg/m³. A. Compute the dry unit weight if the moisture content is 11.5%. B. Compute the void ratio. C. Compute the degree of saturation.arrow_forwardQ2) Classify a soil using USCS from the following information: 75% of the material is retained on the sieve No.200. less than of the percent above and more than 50%, is passing on the sieve No.4. L.L. 35% and P.L.= 29% D10 0.18mm, D30 = 0.88mm, and D60 = 1.12mm d)arrow_forward
- The total weight of soil when saturated 1526 g and weight of the soil after drying is 1053 g. If the sp. gr. of soil is 2.84 A. Compute the moisture content B. Compute the void ratio C. Compute the porosityarrow_forwardFollowing are the results from the liquid and plastic limit test for a soil. No. of blows (N) Moisture Content % 16 39.5 20 36.1 28 30.0 a. Compute the liquid limit. b. Compute the plasticity index. C. Compute the liquidity index if the insitu moisture content is 26.5%. d. Compute the consistency index.arrow_forward5.5 The modified Proctor test (ASTM D 698, method C) was performed for a soil with G, = 2.70, and the results are as follows: Moist Weight in Mold, gf Water Content, % 6.5 3250 9.3 3826 12.6 4293 14.9 4362 17.2 4035 18.6 3685 (a) Plot the Ya versus w relation. (b) Determine Ya,max and wopt- (c) Calculate S and e at the maximum dry unit weight point. (d) What is Y, at Wopt? What is the range of water content if the relative compaction (R.C.) is required to be 95% of the modified Proctor Ya.max?arrow_forward
- A 100% saturated soil has a dry unit weight of 17.5kN/m³, and it's water content is 25%. Required: Determine: a. the saturated unit weight, to the nearest tenth. b. the void ratio, to the nearest thousandth. c. and specific gravity of solids to the nearest hundredth.arrow_forwardA 72-cm3sample of moist soil weighs 141.5 g. When it is dried out in an oven,it weighs 122.7 g. The specific gravity of solids is found to be 2.66. Find the watercontent, void ratio, porosity, degree of saturation, and wet and dry unit weightsarrow_forwardAn 85-cm3 sample of moist soil weighs 150 g. When it is dried out in an oven, it weighs135 g. The specific gravity of solids is found to be 2.7. Find the water content, void ratio,porosity, degree of saturation, and wet and dry unit weights. Provide step by step solution.arrow_forward
- 3. 1870 g of wet soil is compacted into a mould of volume of 1000 cm3, and then oven dried at 1100 for 24 hrs. The weight of the soil is measured at 1677 g, and the specific gravity Gs, is known to be I 2.66. Determine (a) the moisture content (b) the bulk density in kg/m3 (c) dry density in kg/m3 (d) void ratio and (e) degree of saturation. pility: Good to go LOCOL 2 D Focusarrow_forward9. A soil specimen having a volume of 0.012 m³ has a specific gravity of 2.60. It has a moist mass of 20.6 kg and a dried mass of 16.1 kg. a. Compute its void ratio. b. Compute its degree of saturation. c. Compute the dry unit weight of the soil.arrow_forward4. A shrinkage limit test for a saturated specimen had the initial volume Vi = 21.35 cm3 and initial weight Wi = 37 gf ( = 37 × 0.00981 = 0.363 N). After drying, it became Vf = 14.3 cm3 and Wf = 26 gf (= 26 × 0.00981 = 0.255 N). Compute the shrinkage limit (SL) of this soil.arrow_forward
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