EBK PRINCIPLES OF GEOTECHNICAL ENGINEER
9th Edition
ISBN: 8220103611718
Author: SOBHAN
Publisher: CENGAGE L
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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%?
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 )
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.
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- The 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_forward18. 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%?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_forwardEstimate 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_forward
- The 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_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 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_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%? a. 16.22 b. 15.84 c. 16.50 d. 17.42arrow_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_forwardResults of a standard proctor ompaction test on a silty sand are shown. PLEASE COMPLETE SOLUTION. 1) Find the maximum dry unit weight and optimum moisture content. 2) What is the moist unit weight at optimum moisture content? 3) What is the degree of saturation at optimum moisture content? Given: ?? = 2.69 4) If the required field dry unit weight is 18.5 ??/?3, what is the relative compaction? 5) What should be the range of compaction moisture contents in the field to achieve the above relative compaction? 6) If the minimum and maximum void ratios are 0.31 and 0.82, respectively, what is the relative density of compaction in the field?arrow_forward
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