Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN: 9781337705028
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 2, Problem 2.4P
To determine
Find the volume of soil removed and amount of water added to the soil from the borrow pit.
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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 in situ moisture content of a soil is 18% and the moist unit weight is 16.5 kN/m3. The specific gravity of soil solids is 2.75. This soil is to be excavated and transported to a construction site for use in a compacted fill. If the specifications call for the soil to be compacted to a minimum dry unit weight of 16.27 kN/m3 at the same moisture content of 18%, how many cubic meters of soil from the excavation site are needed to produce 7,651 m3 of compacted fill? How many 178 kN truckloads are needed to transport the excavated soil?
An earthen embankment under construction has a total unit weight o f 99.9 lb/ft3 and a moisture content of 10 percent. Compute the quantity of water required to be added per 100 ft3 of earth to raise its moisture content to 14 percent at the same void ratio.
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Principles of Foundation 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 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 fillarrow_forwardThe soil in a borrow pit is at water content of 8.8% and bulk unit weight of 17.8 kN/m3. This soil is used in theconstruction of a compacted road base where the dry unit weight is 19.4 kN/m3 and the water content is 15%. Ifthe finished volume of the road base is 120,000 m3, (a) what would be the volume of the soil removed from theborrow pit? (b) How much water would be added to the soil from the borrow pit?arrow_forwardIn a fill section of a construction site, 1600 m³ of moist compacted soils are required. The design water content of the fill is 14.5%, and the design unit weight of the compacted soil is 17.8 kN/m³. Necessary soil is brought from a borrow site, with the soil having 11.5% natural water content, 17.2 kN/m³ wet unit weight, and G, = 2.64. How much (in cubic meters) of the borrow material is required to fill the construction fill section? And how heavy is it?arrow_forward
- 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= %arrow_forwardA moist soil has a void ratio of 0.65. The soil moisture content is 14% and its solids density or relative specific weight of solids is 2.7. Determine: a. What is the saturated unit weight in kN/m3?b. How much water, in kN/m3, needs to be added to the soil for it to be completely saturated?c. What would be the wet unit weight in kN/m3 when the degree of saturation is 70%?arrow_forwardIs it possible for a soil to have a liquid limit and a plasticity index(PI) both equal to 30%?Why?arrow_forward
- The soil at a borrow area is at moisture content of 8.5%and unit weight of 17.5 kN/m3. This soil is used in the construction of a compacted road base where the dry unitweight is 19.5 kN/m3 and the moisture content is 14.0%. Ifthe finished volume of the road base is 120,000 m3, whatwould be the volume of the soil removed from the borrowpit? How much water would be added to the soil from theborrow pit?arrow_forwardA saturated soil has the following characteristics: initial volume (Vi) =19.65 cm3, final volume (Vf) =13.5 cm3, mass of wet soil (Ml) = 36 g, and mass of dry soil (M2) =25 g. Determine the shrinkage limit and the shrinkage ratio.arrow_forward11. Situation 11 - The moist unit weight and degree of saturation of a soil are given in the following table. a. Determine the unit weight of the soil in kN/m3 if s = 13%. Round off to two decimal places. bDetermine the unit weight of the soil in kN/m3 if s = 69%. Round off to two decimal places. c. Determine the saturated unit weight in kN/m3. Round off to two decimal places.arrow_forward
- What would be the weight of soil solids in 1 m3 of a dry soil whose void ratio e=1.0? If this soil is saturated what would be its unit weight given that its void ratio remains the same (e=1.0)?arrow_forwardThe following technical data are given below: Overburden pressure = 180KPa Increase in pressure = 140KPa Clay thickness = 8m Compression Index = 0.315 Void ratio = 1.132 What is the total settlement in clay?arrow_forwardAssume that an area is underlain by a stratum of compressible soil 5.3 m thick. The weight of the proposed structure, say an earth embankment for a new highway, will result in an increase of 28.2 kPa pressure to the compressible soil. The settlement under this loading would be 0.30 m. The 385 compressible layer is doubly drained, and the soil has a cv value of 0.4 m2/month. Calculations indicate that it would take approximately 22 months for the settlement to occur under the weight of the proposed embankment. How long would be required for a surcharge imposing a pressure of 56.4 kPa to cause the 0.30 m of settlement?arrow_forward
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