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Critical Forces
The Critical Forces choice under Load Direction in Plan View, shows shearline forces in both directions, and the critical tension hold-down force at each vertical force collector location. For low-rise wind loads, it shows the critical force for all reference corners.
For wind design, applied loads are not shown as their direction would conflict with the forces reported. For seismic design, the loads are shown..
Diaphragm Shear Flow
The diaphragm shear flow at the top of the diagram now extends the entire width of the shearline, from the extreme exterior wall at one end to the extreme exterior wall on the other, through all gaps in the shearline, and over openings and non-shearwalls. Previously it was incorrectly shown over walls only.
U-shaped Buildings
When there is a gap in the shearline that is actually external to the building, due to a structure that is U-shaped in plan or in elevation, the program continues to show the diaphragm shear flow across the gap that is absent a diaphragm and also drag strut forces leading into the gap.
This indicates more clearly to the user that the program does not yet deal correctly with this situation from a load analysis standpoint. The WoodWorks development team is working on a solution to this problem, and suggestions from users on how to distribute loads in such structures are welcome.
Seismic Direction
In Plan View, now only two of the four selections of the Load Direction choices currently available for wind are available for seismic, rather than four. The loads and shearline forces are still shown as bi-directional arrows
Negative shearline forces (Version 2002b)
For version 2002b and 7, for forces from negative loading, the program reverts the direction of the arrows and displays the magnitude as positive.
Drag Strut Forces
The drag strut forces that occur at wall ends have been moved up closer to the top of the wall. All the forces have been provided with a circle at one end to distinguish them from shearline forces and to emphasize that, like tension hold-downs, a mechanical connection is required.
Shearline Point Force
In Elevation View, shearline force arrow has been reduced in size, includes the entire tail, and no longer goes missing when there is a gap in the walls at the end of a shearline.