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 2.16P
(a)
To determine
Find the consolidation settlement.
(b)
To determine
Find the consolidation settlement due to the warehouse construction.
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A three-layer soil has the following properties:
Layer 1: k = 2.77 x 10^-3 cm/s, H = 3.17 m.
Layer 2: k = 1.6 x 10^-2 cm/s, H = 4.97 m.
Layer 3: k = 3.06 x 10^-3 cm/s, H = 4.25 m.
Determine the equivalent vertical coefficient of permeability of the soil arrangement. Layer 1 is on top of layer 2 while layer 2 is on top of layer 3. Round off to four decimal places.
a dense silt layer has the following properties: void ratio = 0.50, effective diameter d10 = 10 um, capillary constant c = 0.20 cm2. free ground water level is 8.0 m below the ground surface. find the vertical effective stress in kpa at 5m depth. assume unit weight of solids = 26.5 kn/m3 and that the soil = 26.5 kn/m3 and that the soil above the capillary action rise and ground surfaces is partially saturated at 50%
from the problem above, find the vertical effective stress at 10m depth. assume unit weight of solids=26.5kN/m3 and that the solid above the capillary action rise and ground surface is partially saturated at 50%.
A three-layer soil has the following properties:
Layer 1: k = 2.57 x 10^-3 cm/s, H = 3.6 m.
Layer 2: k = 1.7 x 10^-2 cm/s, H = 4.63 m.
Layer 3: k = 3.19 x 10^-3 cm/s, H = 4.81 m.
Determine the equivalent vertical coefficient of permeability of the soil arrangement. Layer 1 is on top of layer 2 while layer 2 is on top of layer 3.
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- A three-layer soil has the following properties: Layer 1: k = 2.81 x 10^-3 cm/s, H = 3.95 m. Layer 2: k = 1.94 x 10^-2 cm/s, H = 4.51 m. Layer 3: k = 3.36 x 10^-3 cm/s, H = 4.15 m. Determine the equivalent vertical coefficient of the permeability of the soild arrangement. Layer 1 is on top of layer 2 while layer 2 is on top of layer 3.arrow_forwardA dense silt layer has the following properties: void ratio e = 0.50, effective Diameter D10 = 10 μm, capillary constant C = 0.20 cm2. The free groundwater level is 8m below the ground surface. Assume unit weight of solids y= 26.50kN/m3. Find the vertical effective stress at 10m depth. Assume that the soil above the capillary zone is partially saturated at 50%.arrow_forwardQuestion 34 A three-layer soil has the following properties: Layer 1: k = 2.72 x 10^-3 cm/s, H = 3.02 m. Layer 2: k = 1.7 x 10^-2 cm/s, H = 4.93 m. Layer 3: k = 3.16 x 10^-3 cm/s, H = 4.04 m. Determine the equivalent vertical coefficient of permeability of the soil arrangement. Layer 1 is on top of layer 2 while layer 2 is on top of layer 3. Round off to four decimal places.arrow_forward
- Q A layer of sand extends from ground level to a depth of 9 m and overlies a layer of clay, of very low permeability, 6 m thick. The water table is 6 m below the surface of the sand. The saturated unit weight of the sand is 19 kN/m3 and that of the clay 20 kN/ m3; the unit weight of the sand above the water table is 17 kN/m3. Over a short period of time the water table lowers by 3 m and is expected to remain permanently at this new level. Determine the effective vertical stress at depths of 8 and 12 m below ground level (a)immediately after the lowering of water table and (b)Several years after the lowering of the water table. Explain your answer for each part.arrow_forwardA dense silt layer has the following properties: e=0.30, D10=10µm and capillary constant = 0.20cm2 Free ground water level is 8m below the ground surface. Determine the vertical effective stress (kPa) at 5m depth (point A). Assume unit weight of solids = 26.5 KN/m3 and that the soil above the capillary rise and ground surface is partially saturated at 50%.arrow_forwardFor a normally consolidated soil, the following is given: Determine the following: a. The compression index, Cc. b. The void ratio corresponding to pressure of 200 kN/m2arrow_forward
- A horizontal stratified soil deposit consists of three layers each uniform in itself. The permeabilities of these layers are 8 × 10–4 cm/s, 52 × 10–4 cm/s, and 6 × 10–4 cm/s, and their thickness are 7, 3 and 10 m respectively. Find the effective average permeability of the deposit in the horizontal and vertical direction (mm/s).arrow_forwardA 5.3 m thick of soil consist of three different layers as follows: Layer 1: H1 = 1.6 m, k1 = 4.5 m/day Layer 2: H2 = 2.3 m, k2 = 3.5 m/day Layer 3: H3 = 1.4 m, k3 = 5.1 m/day Considering the equivalent coefficient of permeability in the horizontal direction, what is the transmissivity of soil? CHOICES A. 28.43 m2/day B. 27.65 m2/day C. 20.45 m2/day D. 22.36 m2/dayarrow_forwardA dense silt has the following properties: Void ratio (e) = 0.40, SpecificGravity (Gs) = 2.70, Effective diameter d10 = 1x10^-6 m, Capillary constant (C) = 0.20 cm^2. Free ground water level is 8.0 m below the ground surface. a. Find the height of capillary rise in the silt. b. Find the vertical effective stress in kPa at 5m depth. Assume that the soil abovethe capillary zone or capillary action rise to be dry soil and the soil within thecapillary action be partially saturated (degree of saturation, S) at 50%. c. Find the vertical effective stress at 10m depth. Assume that the soil above thecapillary zone or capillary action rise to be dry soil and the soil within the capillaryaction be partially saturated (degree of saturation, S) at 50%.arrow_forward
- 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_forwardA uniform soil deposit has a void ratio 0.6 and specific gravity of 2.65. The natural ground water is at 2.5 m below natural ground level. Due to capillary moisture, the average degree of saturation above ground water table is 50%. Determine effective pressure in kPa at a depth of 6 m. a. 46.40 b. 323.9 c. 80.66 d. 117.9arrow_forwardA layered soil has the following details: H₁ = 3ft, k₁ = 10-4 cm/sec : H ₂ = 4ft, k₂ = 3.2x10ˉ² cm/sec: H₃ = 6 ft, k₃ = 4.1x10ˉ⁵ cm/sec. What is the equivalent vertical permeability? a. 5.14 x 10ˉ⁵ b. 7.37 x 10ˉ⁵ c. 6.23 x 10ˉ⁵ d. 9.81 x 10ˉ⁵arrow_forward
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