Foundation Design: Principles and Practices (3rd Edition)
3rd Edition
ISBN: 9780133411898
Author: Donald P. Coduto, William A. Kitch, Man-chu Ronald Yeung
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 3.4QPP
A sample of soil has a volume of
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2.
Calculate the dry unit weight, void ratio, water content and degree of saturation
for a sample of moist soil weighing 40 pounds and having a volume of 0.32 ft³.
When dried in an oven, the soil weighed 36 pounds. The specific gravity of the
soil solids is 2.70.
16. A sample of soil in natural state having a volume of
0.00934 m³ weighs 18.11 kg. The sample is allowed to dry
in an oven and the weight was reduced to 15.68 kg. The
specific gravity of the solid was found to be 2.67.
a. What is the moist unit weight of the soil?
b. What is the dry unit weight of the soil?
c. What is the porosity?
A 56 cm³ sample of moist soil weights 130.5g. When it is dried out in an oven, it
weighs 111.1g. The specific gravity of solids is found to be 3.6.
Required:
Determine:
a. the water content (w), to the nearest tenth.
b. wet unit weight of soil ('Y), to the nearest hundredth.
c. dry unit weight of soil ('Yd), to the nearest hundredth.
d. void ratio (e), to the nearest thousandth.
e. porosity (n), to the nearest tenth.
f. degree of saturation (S), to the nearest tenth.
Chapter 3 Solutions
Foundation Design: Principles and Practices (3rd Edition)
Ch. 3 - Explain the difference between moisture content...Ch. 3 - A certain saturated sand has a moisture content...Ch. 3 - Consider a soil that is being placed as a fill and...Ch. 3 - A sample of soil has a volume of and a weight of...Ch. 3 - A site is underlain by a soil that has a unit...Ch. 3 - The sub-surface profile at a certain site is shown...Ch. 3 - A vertical load of 300 kN is applied to a area at...Ch. 3 - A vertical load of 20 k is applied to a area at...Ch. 3 - 3m3m footing is to be built on the surface of a 15...Ch. 3 - A 3 ft square footing carries a sustained load of...
Ch. 3 - A 2m thick fill is to be placed on the soil shown...Ch. 3 - Estimate the effective friction angle of the...Ch. 3 - Explain the difference between the drained...Ch. 3 - A soil has c=5 kPa and =32. The effective stress...Ch. 3 - A footing with an embedment of 2 m is embedded in...Ch. 3 - Prob. 3.16QPPCh. 3 - Prob. 3.17QPPCh. 3 - A 9 ft thick fill is to be placed on the soil...
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- In a partially saturated soil, the moisture content W% is 66.67%, the relative specific gravity of solids Ss is 2.5, and the saturated specific gravity of the sample is 1.45 g/cm3. If the volume of air is equal to 8 cm3. Determine the other quantities of the scheme, and calculate: e, n, Gw%, Ym, Yd, Ysat, Y'. Note: Kindly answer all with clear calculations.arrow_forwardDerive the relation between void ratio (e), specific gravity of particles (G) and moisture content at full saturation (w). A certain sample of saturated soil in a container weighs 0.65 N. On drying in an oven in the container it weighs 0.60 N. The weight of container is 0.35 N. The grain specific gravity is 2.65. Determine the void ratio, water content, and bulk unit weight. Show Solutionsarrow_forward1. A soil sample has a volume of 883.125 cm³. The moist soil has a mass of 1740.6 gm. When it is dried out in the oven, it is mass was 1421.2 gm. The specific gravity of the solids is 2.7. Find the following: (a) water content (b) void ratio (c) degree of saturation (d) bulk (moist) density (gm/cm³). (e) dry density (gm/cm³). (f) saturated density (gm/cm³) (g) moist unit weight (kN/m³) (h) dry unit weight (kN/m³) (i) saturated unit weight (kN/m³) Solve the problem using the phase diagram (Check parts (d) to (f) using the equations)arrow_forward
- A150-cm3 sample of wet soil has a mass of 250 g when 100 % saturated. When oven-dried, the mass is 162 g. Calculate the dry density, dry unit weight, water content, void ratio, and Gs.arrow_forwardA sample of soil in natural state having volume of 0.00934 cu.m weighs 18.11kg. The sample is allowed to dry in an oven and weight was reduced to 15.67 kg. The specific gravity of solid was found to be 2.67. Determine the following: (a.) Moist unit weight of soil and dry unit weight of soil (b.) Void ratio and porosity (c.) Moisture content and Degree of saturation Show your solutionsarrow_forward(c) A sample of clay having a mass of 675 gm was coated with paraffin wax. The combined mass of the clay and the wax was found to be 682 gm. The volume was found by immersion in water as 345 ml. The sample was then broken to open. The water content and specific gravity of solids were found to be 15 % and 2.70 respectively. Calculate the bulk density of soil, its void ratio, and degree of saturation. Take specific gravity of wax as 0.89.arrow_forward
- soil. PROBLEMS a specific gravity of 2.74, have degrees of saturation of g5 90, 95, and 100%. Determine the unit weight for each of the four samples. 3.2 A cubic foot of soil in its natural state weighs 113 lh: after being dried it weighs 96 lb. The specific gravity of the soil is 2.70. Determine the degree of saturation, void ratio. porosity, and water content for the soil as it existed in its natural state. 3.3 A container of saturated soil weighed 113.27 g before it was placed in an oven and 100.06 g after it remained in the oven overnight. The container alone weighs 49.31 g; the specific gravity of the soil is 2.80. Determine the void ratio, porosity, and water content of the original soil sample. 3.4 A saturated soil has a unit weight of 120 pcf and a water content of 32.5%. Determine the void ratio and specific gravity of the soil. 3.5 A sample of dry sand having a unit weight of 105 pcf and a specific gravity of 2.70 is placed in the rain. During the rain the volume of the…arrow_forward1. The water content of a 100% saturated soil is 30% and the specific gravity of solids is 2.65. Determine the void ratio and unit weight (kN/m³) 2. A 0.08 m³ sample of soil weighs 1.4 kN. When it is dried out in an oven, it weighs 1.3 kN. The specific gravity of solids is found to be 2.70. Find the water content, void ratio, porosity, degree of saturation and the wet and dry unit weights. 3. A container with soil sample of completely saturated clay weighs 0.7 N. After drying, the weight becomes 0.62 N. The container weight is 0.35 N and the specific gravity of the soil is 2.70. Determine the void ratio, water content and porosity of the original sample. 4. A moist sand sample has a volume of 464 cm³ in natural state and a weight of 8.5 N. The dry weight is 7.4 N and the specific gravity is 2.68. Determine the void ratio, the porosity, the water content and the degree of saturation.arrow_forwardThe soil sample in natural state having a volume of 0.0012 cu.m. weighs 1.73 kg. The degree of saturation being 45.6%. After drying in an oven the final weight of sample was 1.44 kg. Determine the Specific Gravity.arrow_forward
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