35. P W
sliding P
1
P i
2 2
3 3
1
PA
PA
PP
PP
S
toe S
toe
R
y R
y
Safety against sliding along the base
{ }. tan
A
F
H
h
soil-concrete friction
angle 0.5 – 0.7
to be greater
than 1.5
PP= 0.5 KPh2 PA= 0.5 KAH2
36. F
P h Wx
overturning P
1
/ 3 { }
P i i
2 2
3 3
1
PA
PA
PP
PP
S
toe S
toe
R
y R
y
Safety against overturning about toe
H/3
A
H
h
to be greater
than 2.0