ASCE-7 '02 External Pressure Coefficient
ASCE-7 '02 External Pressure Coefficient
(OP)
Im making a program for wind calculation..
In Figure 6-6(con't), in getting the value of Roof Pressure Coefficient Cp, where do you get the value of Cp when Roof Angle is than 10 and h/L is between 0.5 and 1.0?
Since the table shows only values of h/L <=0.5 and >=1.0
Help much appreciated!
In Figure 6-6(con't), in getting the value of Roof Pressure Coefficient Cp, where do you get the value of Cp when Roof Angle is than 10 and h/L is between 0.5 and 1.0?
Since the table shows only values of h/L <=0.5 and >=1.0
Help much appreciated!






RE: ASCE-7 '02 External Pressure Coefficient
RE: ASCE-7 '02 External Pressure Coefficient
You would have to do four linear interpolations,
1) for dist from windward edge 0 to h/2 Cp = -1.1 or -.18
2) for dist from windward edge h/2 to h Cp = -0.8 or -.18
3) for dist from windward edge h to 2h Cp = -0.6 or -.18
4) for dist from windward edte > 2h Cp = -0.4 or -.18
ALso, note that the first one can have a reduction factor applied to the interpolation number for the high side (h/L = 1.0; Cp = -1.3) based on effective area; this reduction does not apply to the interpolation number on the low side (h/L = 0.5; Cp = -0.9)
regards,
chichuck
RE: ASCE-7 '02 External Pressure Coefficient
thats what i did for now.. Interpolate for the upper, interpolate for the lower.. then interpolate again..