169
Now,
Z
M
b Fy
req
in ft
,
ftlbf
,
lbf in
0
2
12
12 244 61
0 9 50 000
)
. /
.
.
/ .
3 27
3
.
.
in
From AISC tables, the soldier piles have been selected as to be W12 × 26, and
the perpendicular support w8 × 12 members 6 ft long.
slope
P = 340.128 lbf/ft
2
Bottom of
excavation
L3
L4
Then we have determined the depth required below subgrade by calculating the
passive earth pressure coefficient using Eq. (9.23):
K p
§
©
¨
·
¹
¸
§
©
¨
·
¹
¸
q
q
q
tan
tan
.
2
2
45 2
45
21
2
2 12
)
Then we have calculated the active earth pressure coefficient using Eq. (9.22):
K a
§
©
¨
·
¹
¸
§
©
¨
·
¹
¸
q
q
q
tan
tan
.
2
2
45 2
45
21
2
0 4724
)
Results and Discussion
Now,
Z
M
b Fy
req
in ft
,
ftlbf
,
lbf in
0
2
12
12 244 61
0 9 50 000
)
. /
.
.
/ .
3 27
3
.
.
in
From AISC tables, the soldier piles have been selected as to be W12 × 26, and
the perpendicular support w8 × 12 members 6 ft long.
slope
P = 340.128 lbf/ft
2
Bottom of
excavation
L3
L4
Then we have determined the depth required below subgrade by calculating the
passive earth pressure coefficient using Eq. (9.23):
K p
§
©
¨
·
¹
¸
§
©
¨
·
¹
¸
q
q
q
tan
tan
.
2
2
45 2
45
21
2
2 12
)
Then we have calculated the active earth pressure coefficient using Eq. (9.22):
K a
§
©
¨
·
¹
¸
§
©
¨
·
¹
¸
q
q
q
tan
tan
.
2
2
45 2
45
21
2
0 4724
)
Results and Discussion