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The force offset is the distance between the end of a wall segment and where the hold-down force is situated or the force at the compression end is assumed to act.
These offsets are used to calculate the moment arm used for overturning calculations and for the calculation of shear wall deflection due to the rotation caused by vertical displacement of the hold-down device.
The tension force is located at the inner face of the end studs plus the hold-down anchor bolt center line location for the hold-down model from the hold-down database.The compression force is assumed to be located at the center of the end stud pack.
In the Hold-down Settings, you can choose to override these values with a fixed distance from the end for all hold-down and compression forces in the structures.
For Non-wood/proprietary walls, the offset is the fixed distance input in the Hold-down Settings, as there are no hold-down devices assigned to these walls and no assumptions made about the composition of the wall end chords.