Principles of Foundation Engineering (MindTap Course List)
8th Edition
ISBN: 9781305081550
Author: Braja M. Das
Publisher: Cengage Learning
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The following are given for a natural soil deposit: Moist unit weight, γ = 17.8 kN/m3 Moisture content, w = 14%; Gs = 2.7 This soil is to be excavated and transported to a construction site for use in a compacted fill. If the specification calls for the soil to be compacted at least to a dry unit weight of 18.4 kN/m3 at the same moisture content of 14%, how many cubic meters of soil from the excavation site are needed to produce 20,000m3 of compacted fill?
the following are given for natural soil deposite;
moist unit weight =17.8KN/m3, moisture content=14% this soil is to be excavated to a construction site for use in compacted fill. if the specification calla for the soil to be compacted to minimum dry unit weight of 18.8kn/m3 at the same moisture content of w=14% how many cubic meters of soil from the excavation site are needed to produce 20000m3 of compacted fill
A hand-carved sample of clay having a mass of 2.62 kN is removed from a 0.5 meter- diameter hole. The hole can be filled with 1.33 kN of water. A sample of clay having a mass of 112.4 grams is oven-dried and has a dry mass of 103.6 grams. Assuming the maximum and minimum attainable unit weight of 18.47 kN/m3 and 16.33 kN/m3 and specific gravity of 2.67, what is the relative density of the soil in percent?
Relative Density= %
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- 1) The moist unit weight of a soil is 19.2 kN/m3 . Given that Gs = 2.69 and w = 9.8%, determine: a. Void ratio b. Dry unit weight c. Degree of saturation 2) Refer to Problem 1 Determine the weight of water, in kN, to be added per cubic meter (m3) of soil for: a. 90% degree of saturation b. 100% degree of saturationarrow_forwardThe soil for backfilling comes from a borrow pit. The water content of the soil in the borrow pit is 15% and its void ratio is 0.69. The swell index index is 1.2. The specification requires the backfill material to be compacted to a dry unit weight of 16 kN/m^3 1. What is the dry unit weight of the borrow pit material? 2. What is the volume of the borrow pit soil required? 3. What is the volume of borrow pit material required considering swell? 4. What is the number of truckloads of soil required for the footing foundation? 5. What is the weight of dry soil in one truck load? 6. What is the weight of water per truck load? 7. What is the degree of saturation of the soil in situation Please answer. Thank you so mucharrow_forwardThe soil for backfilling comes from a borrow pit. The water content of the soil in the borrow pit is 15% and its void ratio is 0.69. The swell index index is 1.2. The specification requires the backfill material to be compacted to a dry unit weight of 16 kN/m^3 1. What is the dry unit weight of the borrow pit material? 2. What is the volume of the borrow pit soil required? 3. What is the volume of borrow pit material required considering swell? 4. What is the number of truckloads of soil required for the footing foundation? 5. What is the weight of dry soil in one truck load? 6. What is the weight of water per truck load? 7. What is the degree of saturation of the soil in situation Please answer. Thank you! Guide is in the picture. Thanksarrow_forward
- 4. An in-situ soil sample weigh 25 kg of 0.02 cubic meter with a moisture content of 7% and specific gravity of 2.8. Determine the following: Moist Unit Weight, Dry Unit Weight, Moist Density, Dry Density, Void Ratio, Porosity, and the Degree of Saturation. (Calculate the Unit Weight and Density in Metric and English Units).arrow_forwardA soil sample has a void ratio of 0.65, dry unit weight of 14.50 KN/m3, and water content of 8 percent. 1. Solve the Specific gravity of the soil sample. A. 2.78 B. 3.16 C. 2.44 D. 3.27 2. What is the moist unit weight in KN/m3when the degree of saturation is 54%? A. 59 B. 21.06 C. 18.37 D. 19.55 3. Determine the volume of voids if the total volume of the soil is 3.67 cu.m A. 43 B. 2.39 C. 1.82 D. 3.16arrow_forwardA 3 layer soil has the following properties from top to bottom. Obtain the equivalent vertical coefficienct of permeability, in cm/sec, round off to 7 decimal places, and obtain the equivalent horizontal coefficient of permeability, in cm/sec, round off to 5 decimal places.arrow_forward
- Geotechnical Engineering Please help me answer this question, and please show your solutions write it properly. Problem 4 For a given sandy soil, the maximum and minimum void ratios are 0.72 and 0.46, respectively. If Gs= 2.71 and w=11%, what is the moist unit weight of compaction in the field if the relative density equals 82%? Problem 5 A soil sample has a unit weight of 105.7 pcf and a degree of saturation of 50% When the saturation is increased to 75%, its unit weight raises to 112.7 pcf. Determine the void ratio e and the specific gravity Gs for this soil.arrow_forwardFor a given soil, the void ratio e, water content w, and specific gravity Gs are found to be 0.50, 15%, and 2.65, respectively. Find: (a) Total unit weight of the soil γt (b) Degree of saturation S (c) Dry unit weight γd if the water in the void is removedarrow_forwardRefer to Problem 3.8. Determine the mass of water (in kg) to be added per cubic meter (m3) of soil fora. 90% degree of saturationb. 100% degree of saturation 3.8 The dry unit weight of a soil sample is 14.8 kN/m3. Given that Gs = 2.72 and w = 17%,determine:a. Void ratiob. Moist unit weightc. Degree of saturationd. Unit weight when the sample is fully saturatedarrow_forward
- For a soil the following is given: wet specific weight 19.21 kN / m3, water content w = 19.2%, S = 60%. Determine: a) Porosity n b) Dry specific gravity , c) List of voids e, d) Gs e) Amount of water for complete saturation. Make the schematic.arrow_forwardSituation 1 - a. A soil sample has specific gravity of 2.7 and unit weight at zero air voids 15.08kN/m3 What is the void ratio? b. A soil sample has specific gravity of 2.7 and unit weight at zero air voids 15.08kN/m3 What is its water content? c. A soil sample has specific gravity of 2.7 and unit weight at zero air voids 15.08kN/m3 What is the hydraulic gradient at hydraulic condition?arrow_forwardA 200,000 cu. m clay embankment is to be constructed at an optimum water content of 15%. It is expected that 95% saturation will be attained. Calculate the volume of the soil that will be needed if the void ratio of the fill material is 1.0.arrow_forward
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