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 6.12P
To determine
Find the relative compaction in the field for 82 % relative density.
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the maximum and minimum dry unit weights of a sand were determined in the laboratory to be 17.5kn/m^3 and 14.8kn/m^3. what should be the relative compaction in the field if the relative density is 70%?
18. Problems
Problem 4.1
The maximum and minimum dry unit weights of a sand were determined in the laboratory to be 18.9
and 15.5 kN/m', respectively. What is the relative compaction in the field if the relative density is 75%?
8. The max and min dry unit weights of the sand were determined in the laboratory to be 16.5 kN/m3 and 14.6 kN/m3 respectively. The relative density of compaction in the field of the same sand is 70%.
What is the relative compaction? (Ans: 96%)
What is the dry unit weight? (Ans: 15.84 kN/m3 )
What is the moist unit weight at a moisture content of 10%. (Ans: 17.42 kN/m3 )
Chapter 6 Solutions
Principles of Geotechnical Engineering (MindTap Course List)
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- For a sand with 4% finer than No. 200 sieve, estimate the maximum relative density ofcompaction that may be obtained from a modified Proctor test. Given D50 = 1.4 mm.arrow_forwardThe maximum and minimum dry densities of a sand were determined in the laboratory to be 1,534 kg/m3 and 1,616 kg/m3, respectively. In the field, if the relative density of compaction of the same sand is 85.24%, what is the relative compaction (in percent)? Answer: 99.22arrow_forwardA. The maximum and minimum dry unit weights of a sand were determined in the laboratory to be 104 lb/ft and 93 lb/ft, respectively. What would be the relative compaction in the field if the relative density is 78%? Q1 B. Given Gs = 2.65, calculate the zero-air-void unit weight for a soil in lb/ft at W = 10%.arrow_forward
- Need complete solution. Need fast! The maximum and minimum dry densities of a sand were determined in the laboratory to be 1509 kg/m3 and 1673 kg/m3, respectively. In the field, if the relative density of compaction of the same sand is 86.83%, what is the relative compaction (in percent)? Round off to two decimal places.arrow_forward1. A wet sand sample has a volume of 4.64 x 10⁻⁴ and weighs 8N. After oven drying, the weight reduces to 7.5N. Calculate the water content, void ratio and degree of saturation.(use Gs = 2.7) 2. A contractor has compacted the base course for a new road and found that the mean value of the test sample shows, w = 14.6%, Gs =2.81, and γ= 18.2 KN/m³. The specification require thate ≤0.8. has the contractor complied with the specifications? 3. The moist unit weight of soil is 16.5 KN/m³. Given that the w=15% and Gs = 2.70. Find:1) dry unit weight2) porosity3) degree of saturationarrow_forwardThe maximum and minimum dry densities of a sand were determined in the laboratory to be 1682 kg/m3 and 1510 kg/m3, respectively. In the field, if the relative density of compaction of the same sand is 70%. Determine the relative compaction and dry density in the field (kg/m3).arrow_forward
- Estimate the value of coefficient of permeability for a uniform graded sand of size D₁0 = 0.15 mm obtained from sieve analysis. G = 2.67. 10arrow_forwardThe maximum and minimum dry unit weights of a sand were determined in the laboratory to be 16.9 kN/m³ and 14.2 kN/m³, respectively. If the field relative density is 82%? Determine The degree of compaction in the field. Field dry unit weight. Field bulk unit weight if the field moisture content is 15%.arrow_forwardThe max and min dry unit weights of sand were determined in the laboratory to be 16.5 kN/m3 and 14/6 kN/m3 respectively. The relative density of the compaction in the field of the same sand is 70% What is the moist unit weight at a moisture content of 10%? a. 16.22 b. 15.84 c. 16.50 d. 17.42arrow_forward
- The max and min dry unit weights of sand were determined in the laboratory to be 16.5 kN/m3 and 14/6 kN/m3 respectively. The relative density of the compaction in the field of the same sand is 70% What is the moist unit weight at a moisture content of 10%?arrow_forwardA wet sand sample has a volume of 4.64 x 10-4 m3 and weighs 8N. After oven-drying, the weight reduces to 7.5N. Don't assume the value of Gs.Calculate the following: a. Void ratio b. Degree of saturation.arrow_forwardThe results of a laboratory test of a sand are emax= 0.91, emin= 0.48. a. what is their relative compactness?arrow_forward
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