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Drag Strut Forces for Wind and Seismic (Bug CSW7-40c)
Sine version 2002 was released, when wind and seismic forces were both present on a shearline, the drag strut force calculations were incorporating both wind and seismic shear forces, rather than each separately, resulting in a much too heavy drag strut design force.
Hold-down Force Distribution into Interior of Wall Segment (Bug 1795)
The calculations for Hold-down force distribution from an upper wall to the interior of a wall segment below were using the shearline ends rather than the wall ends, resulting in miscalculation of the force magnitude and misappropriation of these forces to the line end rather than wall end. Affected only shearlines with multiple walls.
The program now transfers these forces directly downwards via a vertical element.
Compression Hold-down Force Accumulation (Bug 1796)
Compression hold-down forces shown in elevation view were showing the forces from that level only, without including the accumulated force from the levels above.
Rigid distribution of negative direct loads ( Version 2002b)
Before version 2002b, the calculation for torsional shear force for the rigid distribution method, was omitting the negative direct loads
Critical Negative Wind Loads (Version 2002b)
Before version 2002b, in the unlikely circumstance that negative wind loads are critical, the program was creating hold-down forces in wrong direction and not designing walls correctly
Distribution of Wind Uplift Loads to Openings. (Version 2002b)
Before version 2002b,The partitioning of line loads over openings and non-FHS segments were incorrect when wind uplift loads were present and seismic building masses were also present.