A clay layer, 20 feet thick is covered by a 40 foot sandy gravel stratum with a porosity of 30%, and a dry unit weight of 103 pcf. Tests on the un-drained samples of the clay gave c = 2.9 psi, YSAT = 112 psf and o' = 24°. Find: (a) the soil shear strength s = c + c'tano' at the clay's midlevel (point A), and (b) the effective and total stress acting on the vertical face of a soil element at the clay midlevel (point A). d=13" Hj=40' SAND Ya = 103 pcf n = 30% c = 2.9 psi Ysat = l12 pcf o' = 24° H3=20' CLAY ROCK

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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A clay layer, 20 feet thick is covered by a 40 foot sandy gravel stratum with a porosity of 30%, and
a dry unit weight of 103 pcf. Tests on the un-drained samples of the clay gave c = 2.9 psi, YSAT =
112 psf and o' = 24°. Find:
(a) the soil shear strength s = c + c'tano' at the clay's midlevel (point A), and
(b) the effective and total stress acting on the vertical face of a soil element at the clay midlevel
(point A).
d=13"
Hj=40'
SAND
Ya = 103 pcf
n = 30%
c = 2.9 psi
Ysat = l12 pcf
o' = 24°
H3=20'
CLAY
ROCK
Transcribed Image Text:A clay layer, 20 feet thick is covered by a 40 foot sandy gravel stratum with a porosity of 30%, and a dry unit weight of 103 pcf. Tests on the un-drained samples of the clay gave c = 2.9 psi, YSAT = 112 psf and o' = 24°. Find: (a) the soil shear strength s = c + c'tano' at the clay's midlevel (point A), and (b) the effective and total stress acting on the vertical face of a soil element at the clay midlevel (point A). d=13" Hj=40' SAND Ya = 103 pcf n = 30% c = 2.9 psi Ysat = l12 pcf o' = 24° H3=20' CLAY ROCK
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