Shearwalls generates wind Component and Cladding (C&C) loads on building faces of each block according to the parameters entered in the Site Information dialog and the mean roof height of the block. These loads are used in Shearwalls for the design of sheathing to resist bending and shear forces, and nail withdrawal.
The design methodologies used are ASCE Chapter 30, Part 1, 30.4 for buildings with mean roof height less than 60 feet, and ASCE Chapter 30 Part 3, 30.6 for buildings with mean roof height greater than 60 feet. These methods are applied on a block-by-block basis, so it is possible to have two methods applied to the same building.
Wall Loads Only
No component and cladding loads are generated on roofs, as Shearwalls does not design roof sheathing. For this reason, the two load magnitudes generated for C&C loads, for interior and edge zones, are sufficient, and there is no need to add a third for roof corners.