|
|
|
|
|
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 application of Note 8, from Figure 4.1.7.6.-A to an eccentric ridge line, a literal interpretation of the note is used, that is, the program does not make the adjustment when the building width less than 5H. So for a monoslope building 4.95 H wide, the negative windward co-efficients would be applied to the whole windward side. For the same building 5.05 H wide, leeward co-efficients are applied from 2.5H to 5.05H.
If you disagree with this interpretation, you can manually add a wind load from 2.5H to the ridge line derived from the windward components, and modify the wind load the program created by multiplying the magnitude by 2.5H / W, where W is the horizontal distance to the ridge line.