(a) Determine o for the soil. (b) Determine Hvorslev's parameters ̟ and c̟ at moisture contents of 24.2, 22.1, and 18.1%. Test no. Chamber consolidation o,(kN/m²) Ao,(kN/m²) Moisture content pressure o(kN/m²) of specimen at failure (%) 105 105 154 24.2 3 4 120 162 120 162 176 237 109 22.1 18.1 24.2 250 35 5 250 61 137 22.1 250 140 229 18.1

(a) Determine o for the soil. (b) Determine Hvorslev's parameters ̟ and c̟ at moisture contents of 24.2, 22.1, and 18.1%. Test no. Chamber consolidation o,(kN/m²) Ao,(kN/m²) Moisture content pressure o(kN/m²) of specimen at failure (%) 105 105 154 24.2 3 4 120 162 120 162 176 237 109 22.1 18.1 24.2 250 35 5 250 61 137 22.1 250 140 229 18.1

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Laboratory Determination of Hydraulic Conductivity

Hydraulic conductivity is the measure of flowability of water inside the soil in the presence of a hydraulic gradient. The hydraulic gradient is defined as the difference in the water heads in the soil, which induces a water motion. In simple terms, a hydraulic gradient is the presence of a potential that induces a flow of water.

Question

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7.8 The results of some drained triaxial tests on a clay soil are given below. Failure
of each specimen was caused by increasing the axial stress while the radial stress
was kept constant.
(a) Determine o for the soil.
(b) Determine Hvorslev's parameters ̟ and c̟ at moisture contents of 24.2,
22.1, and 18.1%.
o;(kN/m²) Ao, (kN/m²)
Test no.
Chamber consolidation
Moisture content
pressure o' (kN/m²)
of specimen at
failure (%)
105
105
154
24.2
2
3
120
162
120
162
176
237
22.1
18.1
4
250
35
109
24.2
250
61
137
22.1
6
250
140
229
18.1

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Ex Two identical soil samples (A) and (B) of a fully saturated N.C.C. were tested. Sample (A) was subjected to an unconfined compression test and failed when the deviator stress (OT-13) was (200) kN /n². Sample (B) was tested under UU conditions with a cell pressure of (300) kN/m². The pore water pressure at failure. was (200) kN/m². a) What was the pore water pressure at failure in sample (A). b) If C=o, Find (2) for this clay. (Itint. Start with soil B, and that (OJ) un= (FJ) afined). unconfined
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