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Shearwalls calculates and displays the out-of-plane and wall anchorage forces from ASCE 7 12.11. They are displayed in Elevation view for your information; the anchorages themselves are not specified or designed in Shearwalls, nor are the walls designed for the out-of-plane force.
Out-of Plane Force
The out-of-plane force wall force is calculated using 12.11.1 and the self-weight of the wall as input in the Load Generation dialog. It is shown at the top of the wall in Elevation view.
Wall Anchorage Force
The wall anchorage force is calculated using Eqn. 12.11-1 in section 12.11.2.1. The length used for the ka factor in Eqn. 12.11-2 is the shear line length (including any non-shear walls and openings or gaps within the line, but not gaps at between the end of the line and the end of the floor or ceiling diaphragm). The full height of the wall is used as the tributary area in calculation the weight Wp.
For rigid diaphragms, the height factor given in the penultimate paragraph in 12.11.2.1 uses the eave height as roof height .
For flexible diaphragms, the program shows anchorage force at the top of the wall. For rigid diaphragms, it shows the anchorage force at the top and bottom of the wall, as these differ due to the height factor