Page 264 - สะพานเครื่องหนุนมั่น

d common CAP = Width of common
L = Span Length

C = Required Class
X

Y = Veriables from Tbl 6-1, Pg 6-2 , TM. 5-312

Z
W' = Estimated Dead load for entire span ( Kips - Ft )
DL
M = Dead Load Moment for entire span ( Kip - ft )
DL
V = Dead Load Shear for entire span ( Kips )
DL
M LLw = Live Load Moment for wheeled vehicles ( Kip - Feet )

M = Live Load Moment for tracked vehicles ( Kip - Feet )
LLt
V LLw = Live Load Shear for wheeled vehicles ( Kips )

V = Live Load Shear for tracked vehicles ( Kips )
LLt
d min = Minimum depth of stringers ( inches )

N = Minimum number of stringers
s
W = Required roadway width ( feet )
R
S = Stringer spacing ( feet )
s
N = Effective number of stringers for 1 way traffic
1
N = Effective number of stringers for 2 ways traffic
2
m = Dead Load Moment per stringer ( Kip - ft )
DL
m = Live Load Moment per stringer ( Kip -ft )
LL
m = Total Design Moment per stringer ( Kip - ft )

3
S = Required section Modulus ( in )
r
3
S = Section Modulus of specific stringers ( in )
v = Live Load shear per stringer ( Kips )
LL
P = Allowable bearing load per pile ( Kips )
B
f = Allowable bearing stress ( ksi )
B