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Once the applied loads are distributed to the shear lines, the shear line forces are used to calculate several secondary shear force values at appropriate locations. It reports these in Plan view, Elevation view and/or in the Design results, and uses them for various aspects of design:
Shear Line Force V
The total shear line force V is the shear point force acting at the top of the wall, in pounds or kN. This is the only force shown in plan view. It is also shown in Elevation view at the top left or right of the shear line.
Shear Wall or Segment Force V
The force V on each full-height wall segment is shown in Elevation view at the top of the wall. For walls with no openings, the force on the entire wall is shown. These forces are determined as described in Horizontal Force Distribution Within Shear Line, and are used to determine the unit design shear force v as described below.
Diaphragm Force v
The unit diaphragm shear v is the force density per lineal foot or meter that exists in the diaphragm chord at the top of the wall. It is simply V divided by the length of the shear line. This assumes the shear line is the same length as the diaphragm. This is shown in Elevation view at the top of the wall line. This force is used to determine drag strut forces and in the shear distribution to FTAO wall piers.
Design Shear Force v
The unit design shear v is design shear force density in the sheathing of the shear-resisting wall segments, used for shear wall design, hold-down force calculations, drag strut force calculations and deflection calculations.
It is V divided by the length of the wall segment and is shown at the bottom of the each full-height segment. It is also shown in the Shear Design and Deflection tables of the Design Results output.