Civil Engineering Reference
In-Depth Information
In Problems
13.27
and
13.28
, determine the safety fac-
tors against overturning and sliding for the gravity and
semigravity walls shown if
30
and the coefficient
of sliding (concrete on soil) is 0.45. Compute also the
soil pressure under the toe and heel of each footing. The
soil weighs 16 kN/m
3
, and the plain concrete used in
the footing weighs 22.7 kN/m
3
.
In Problems
13.29
and
13.30
, if Rankine's coefficient is
0.35, the soil weight 16 kN/m
3
, the concrete weight 23.5
kN/m
3
, and the coefficient of friction (concrete on soil)
is 0.50, determine the safety factors against overturning
and sliding for the wall shown.
3.06, 1.68,
141.87 kN/m
2
,
Problem 13.27
(
Ans.
17.03 kN/m
2
)
Problem
AB
C
D
E h
1 m
1 m
13.29
4 m 1.500 m 300 mm 2.200 m 700 mm 5 m
13.30
5 m 1.500 m 500 mm 3.000 m 800 mm 7 m
2 m
(
Answer to Problem 13.29:
5.32, 1.77)
soil
4 m
2 m
2 m
Problem 13.28
