Hi,
Regarding Component and Cladding wind pressures as defined in ASCE 7-10: Do the positive and negative pressures on a wall component get combined? For example, I have a girt with a trib. area of ±20sf. The calculated C&C pressures (Zone 4) are: +21.2psf and -25.4psf.
Note 3 on Figure 30.4-1...