Page 263 - สะพานเครื่องหนุนมั่น

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สัญลักษณ์และความหมาย

N = Number of piles required
pr
S = Spacing of piles ( ft )
p
W = Roadway Width ( ft )
R
N = Number of rows or bents
R
P = Maximum load on outside pile ( K )
M
N = Total number of piles
T
N = Number of piles per row or bent
P
N = Effective number of piles
pe
F = Maximum allowable load on the outside pile ( K )
A
S = Spacing between rows or bents ( ft )
r
P min = Minimum load on the outside pile ( ft )

F = maximum allowable uplift force ( K )
u
N = Number of stringers
s
f' = Actual bearing stress, perpendicular to grain
B
f = Allowable bearing stress, perpendicular to grain
B
d = depth of cap ( also d )
c
cap
b = width of cap ( also b )
c
cap
N
c min = Minimum number of corbels
L = Design length of corbel
c
2
A eff(r) = Effective shear area required ( in )
2
A eff(cor) = Effective shear area provided by corbel ( in )

N = Number of corbels
c
Spa Cor = Spacing of corbels
b common CAP = Width of common