Design For Depth of Pile Cap (ACI 318-08) : V V F F
Design For Depth of Pile Cap (ACI 318-08) : V V F F
Design For Depth of Pile Cap (ACI 318-08) : V V F F
Design Data:
1'-3"
Ftg Length, L = 8.50 ft
Ftg. Width, W = 8.50 ft
Ftg Thickness, T = 22 in 3'-0"
f'c = 4 ksi
fy = 60 ksi 3'-0"
Pile Capacity, Vu = 40 kips
Pile Diameter = 12 in 1'-3"
fVu fVn
fVn f 2 f c b w d (11-3)
bw = 102 in
cover = 7.0 in
d= 15.0 in
f= 0.75
b. Two-way action:
4
2 6
Vc d
smallest value of s 2 6.8
f c b 0 d b0
4
4
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cover = 7.0 in
d= 15.0 in
= 1 ratio of long to short side of column, concentrated load or reaction area.
b0 = 124 in Column size 16 in (Square)
s = 40 40 for int. col, 30 for edge col., 20 for corner col.
b0 / d = 8.27
Factor = 4
f Vc = 352.9 kips >Vu O.K.
4
2 6
Vc d
smallest value of s 2 5.5
f c b 0d b0
4 4
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