|
|
|
|
|
The low-rise method assumes symmetric structures. As relatively few low-rise structures can be relied upon to have perfectly symmetric roofs, Shearwalls extends this method to the case of eccentric ridge lines.
The coefficients used on the side roof panels and the walls below the panels are based on the angle of each roof panel. This applies to each roof on a structure with multiple blocks.
In the application of Note 8 from ASCE 7 Figure 28.3-1, a literal interpretation of the note is used, that is, the leeward co-efficients are applied to the region of the windward roof beyond the lesser of 0.5 B and the 2.5 times the building height H. So for a building 4H wide with a monoslope roof, the co-efficients would be applied past the distance 2H. It cannot happen for a centric ridge line that the distance is less than 2.5H.
If you disagree with this interpretation, you can manually add a wind load for the distance between 0.5B and 2.5H