The following are given for a natural soil deposit: Moist unit weight, y = 17.8 kN/m° Moisture content, w = 16 % G, = 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/m° at the same moisture content of 16%, how many cubic meters of soil from the excavation site are needed to produce 21,000 m³ of compacted fill? (Enter your answer to three significant figures.) Total volume of soil to be excavated = m³

The following are given for a natural soil deposit: Moist unit weight, y = 17.8 kN/m° Moisture content, w = 16 % G, = 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/m° at the same moisture content of 16%, how many cubic meters of soil from the excavation site are needed to produce 21,000 m³ of compacted fill? (Enter your answer to three significant figures.) Total volume of soil to be excavated = m³

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter5: Soil Improvement And Ground Modification

Section: Chapter Questions

Problem 5.2P

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Problem G A saturated 110 cu.cm clay sample has a natural water content of 29.85%. It is found that the shrinkage limit occurs when the water content is 18.65%. If the sp.gr. of soil is 2.65. a. Compute the shrinkage ratio. b. Compute the volume of sample when the water content is 16.25%. c. Compute the mass of dry soil sample.
Give its consistency index. EXERCICE 3 Classify the following soil using the Unified Soil Classification (ASTM standard). Percentage passing N° 4 seive = 98 Percentage passing N° 10 seive = 86 Percentage passing N° 40 seive = 80 Percentage passing N° 200 seive = 71 The liquid limit = 102% The Plasticity index = 68% The water content is = 72%Give its consistency index. Indicate the activity of this soil and numerous some potential problems linked to its use in different geotechnical works. EXERCICE 4 Some tests were performed on the sandy silt according to Standard Proctor test. The volume of the mold is 944 cm. The specific gravity was measured as 2.67 1) Plot the Proctor compaction curve (see the page 2) 2) Find: 2-1 The maximum dry unit weight of sandy-silt fill, 2-2 Its OMC, 2-3 The moisture ranges for 85% of Standard Proctor Optimum, 2-4 The degree of saturation at the optimum Proctor state. 3) Plot the zero air voids curve (see the page 2) 4) Determine the values of degree of…
Subj: Soil Mechanics Specifications for a proposed earth fill require that a soil be compacted to 95% of Standard Proctor dry density. Tests on borrow material indicate maximum dry density equal to 124 lb/cu ft. at a optimum moisture content of 12% The borrow material in its natural condition has a void ratio of 0.60. Gs=2.65. Determine the relative compaction. a. 87.87% b. 83.48% c. 95.00% d. 92.76%
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A sample of soil compacted according to the standard Proct or test has a density of 2.06 g/cm³ at 100% compaction and at an optimum water content of 14%. What is the dry unit weight? What is the dry unit weight at zero air-voids? If the voids become filled with water what would be the saturated unit weight? Assume Gs = 2.67 Air Water Solids Ma + - + M st
A saturated soil sample has a water content of 34% and void ratio of 0.92. Determine the effective and moist unit weight. Another soil has an effec-tive unit weight of 10.29 kN/m3 and has a void ratio of 0.62, what is this soil’s bulk density and degree of saturation at a water content of 14%. Assume a logical value of Gs with at least 4 significant figures.
A clay is found to have a liquid limit of 75%, a plastic limit of 45% and the shrinkage limit of 25%. If the sample of this soil has a volume of 30cm3 at the liquid limit and a volume at the shrinkage 16.7cm3 at the shrinkage limit. Determine the following: a) Mass of soil at shrinkage limit. [ Select ] b) Shrinkage Ratio. [ Select ] c) Specific gravity of soil solids. [ Select ] > >
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