CALCS PROC043
WIND FORCE, BS CP3

NOTATION

Cddrag coefficient
Hheight, member above amplification datum
Hdheight, datum
Llength, member
Mmoment, about height datum
Nnumber of members
Pforce, wind on Nm members
PROPproperty id
S1factor, topography
S2factor, ground roughness,building size,height above gnd
S3factor, statistical
Vvelocity, wind, nominal
Vsvelocity, wind, factored
Wwidth, member, face to wind

APPLICATION

Geometric forms subject to wind loading

OUTPUT

wind force & overturning moment

SEE ALSO

PROC026 PROC049

THEORY

BS CP3:CH5:PT2972

GUIDANCE

units t, m, s

INPUT FORMAT

LET V=:S1=:S2=:S3=:Vs=V*S1*S2*S3:sumP=0:sumM=0
LET L=:W=:Cd=:H=:Hd=:N=:PROC043

EXAMPLE

Call Statement

LET V=44:S1=1:S2=1:S3=1:Vs=V*S1*S2*S3:sumP=0:sumM=0
LET L=40:W=1.6:Cd=2:H=12.5:Hd=0:N=1.43:PROC043

Output

PROC043 WIND FORCE, Rev 021095
P= N*.613*Vs^2*L*W*Cd/9810= 22.14
M= (H-Hd)*P= 276.8
END043