m Homogeneous Clay Slice #3 8 9 10 11 12 13 14 24 19 20 21 22 23 b W.T h|w Al S Duncan et al. 2014 N Soil γ φ' c' Su Slice h (m) hw (m) b(m) a (deg) type (kN/m³) (deg) (kPa) (kPa) Moist: 18 Clay 28 1 25 #3 9 3 3 41 Saturated: 19

m Homogeneous Clay Slice #3 8 9 10 11 12 13 14 24 19 20 21 22 23 b W.T h|w Al S Duncan et al. 2014 N Soil γ φ' c' Su Slice h (m) hw (m) b(m) a (deg) type (kN/m³) (deg) (kPa) (kPa) Moist: 18 Clay 28 1 25 #3 9 3 3 41 Saturated: 19

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter3: Weight-volume Relationships And Plasticity

Section: Chapter Questions

Problem 3.1P

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Question

An excavation is rapidly made on site as depicted in the Figure below. The soil wedge above the critical slip surface is divided into thirteen slices. Based on the ordinary method of slices, calculate the ratio (R/S) between the Resisting Force (R) and the Driving Force (S) for slice #3, shortly after the excavation is completed. (Acceptable tolerance = 4%).

The geometry of slice #3 and the soil properties are provided in the tables below. The height of water at the middle of the slice is h_w = 3.0 m. Note that the total weight of the slice is equal to the weight of the saturated soil below the water table plus the weight of the moist soil above the water table.

Hint: the weight of slice #3 is 495 kN

m
Homogeneous Clay
Slice #3
8 9 10 11 12 13 14
24
19
20 21
22
23
b
W.T
h|w
Al
S
Duncan et al. 2014 N
Soil
γ
φ'
c'
Su
Slice
h (m)
hw (m)
b(m)
a (deg)
type
(kN/m³)
(deg) (kPa) (kPa)
Moist: 18
Clay
28
1
25
#3
9
3
3
41
Saturated: 19

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