Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 9, Problem 9.7P
To determine
Calculate time taken for
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the soil profil shwon in figure BI below.determine
total and effective vertical stresses and powr water
Pressure at Points A, B, and C.
For the soil
3m
4m
6m
I
Sand
A5=2167 €=0.69
B
C
w=9%
Silt
Gs =2170
= 2₁70 e=0.60
clay
= 2.72 @= 0.5
G₁
5 = 70%
Estimate the consolidation settlement of the clay layer shown in Figure P6.8 using the results of Problem 6.8.
SITUATION 4:
As soil profile shown below. The sand
above the ground water table is dry.
Other data pertaining to the table as
follows:
H₁ 4m, H₂= 3.2m, H₂ = 1m
Chapter 9 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
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- Refer to Figure P4.26. Estimate the equivalent permeability (cm/sec) for flow in the horizontal direction. Also calculate the ratio of Ky (eq)/ kH(eq). on paper if possible.arrow_forward2. Consider the stratified soil deposit shown in the figure. There are four layers, 3m thick each, and kH1=2x10³, kH2=1x105, kµ3=2x104, kH4=1x10³in cm/sec. Determine the equivalent coefficient of permeability in the horizontal direction and the total flow in cm3/sec per cm width. H Direction of flowarrow_forwardA layered soil is shown with the corresponding values of K1, K2 and K3. Compute the equivalent horizontal coefficient of permeability. H1=3m Kj=2x10*cm/s H2=4m K2=3.2x10²cm/s· H=12m H3=5m K3=4.1x10 cm/s Select one: a. 0.01089 cm/s b. 0.01980 cm/s c. 0.01890 cm/s d. 0.01809 cm/sarrow_forward
- 1. A soil profile is shown in the figure. A uniformly distributed load of 75kPa is applied at the ground surface. The clay is normally consolidated. Compute the compression index Compute the primary consilidation settlementarrow_forwardHand written and clean witing pleasearrow_forwardA soil formation is composed of 5 m thick clay and 5 m thick sand being the sand above the clay. The ground water table (GWT) is located at 2 m below the ground surface. 40 kPa 2 m Sand Ydry = 17.66 kN/m^3 VGWT Sand 3 m Y sat = 20.93 kN/m^3 LI = 64% PL = 20% w = 40% 5 m Clay eo = 0.60 G. = 2.60 1. Calculate the primary compression index. [ Select ] 2. Calculate the primary consolidation settlement of the normally consolidated clay layer if there is a surcharge of 40 kPa acting on the ground surface. [ Select] 3. Calculate the secondary settlement of the clay layer 5 years after the completion of the primary consolidation settlement. Time for completion of primary settlement is 2 years. Use C, = 0.02. [Select ]arrow_forward
- Solve please geotecarrow_forward5. The coefficient of permeability of a sand at a void ratio of 0.62 is 0.03 cm/sec. Estimate the coefficient of permeability at a void ratio of 0.48. Using Casagandre equation Using Kozeny-Carman equation Find the difference in the rate of flow using the results of “a” and “b” if i = 0.70 and A = 0.6 m2.arrow_forwardWhat is the equivalent coefficient of permeability (k) for all soil layers? where equivalent k(2 and 3) = 4.58 k1 and k4 = 4.23 k1 10 8 IB D K2 N K3 N K1 K4 .a k1 2.738 .b k1 44.050 .C k1 3.568 .d k1 2.382 28arrow_forward
- 11.3 Refer to Figure (11.22). Given: H₁ = 2.5 m, H₂ = 2.5 m, H3 = 3 m, and Ao = 100 kN/m². Also, • Sand: e = 0.64, G₁ = 2.65 • Clay: e=0.9, Gs=2.75, LL-55, C = 0.405 Estimate the primary consolidation settlement of the clay layer assuming that it is normally consolidated. Ao Groundwater table H₂ Void ratio = Sand Clay +arrow_forwardConsider the consolidation situation below and answer the questions. 200 kPa 200 kPa Water Table Sand 20m Ysat = 21.5 kN/m3 15m Clay 4m Ysat = 21 kN/m³ Youlk= 18 kN/m m, = 0.31 MPal Cy 8.4 m2/year 10m Impervious rock 2.1 What would the piezometer reading (h) be after the 200 kPa has been applied on the surface? 2.2 When h = 12m, what would the degree of consolidation be at point X, from the same surface load of 200 kPa? 2.3 Determine what the reading of the piezometer (h) would be if when the ucyiee of consolidation at point X is 63%.arrow_forwardIt is stated that the clay layer shown in the figure is OVER CONSOLIDATED clay. The pre-consolidation pressure op' 110 kN. Calculate the consolidation settlement that will occur in the clay layer due to the load of 2500 kN. = 2 Sand 2 Sand 5m Clay Rock 8=2500 kN BxL=1.5mx18m X₁ = 18₁1 kN/m²³ --P6WL Ys=19.6 kN/m³ Ys=20.8 kN/m²³ lo = 0,62 Cc = 0.107 Cs 0.009arrow_forward
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