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Important Note – These are descriptions to changes implemented in WoodWorks Shearwalls for version 10.4 and may not reflect current behavior.
After determining the torsional amplification factor Ax, the program if necessary applies the factor to the torsions and redistributes loads to the shearlines. Sometimes this triggers a redesign of the structure, and the reconfigured building may not have the same torsional amplification as before, but the program did not recalculate it. As a result, the torsional amplification shown in the output and the one calculated from the designed structure did not match.
It may even happen that the program determines that the building requires a torsional factor and then he redesigned building is no longer torsionally sensitive.
The program now applies the Ax factor calculated for the final design and redistributes loads. It does not redesign the structure again, but it shows in the output reports and in the building response to the forces from the redistributed loads. Note that this can cause a structure for which walls that were originally designed to pass now fail, or walls to be overdesigned compared to the materials needed to resist the final load distribution.
This is unavoidable because even an infinite sequence of designing, modifying the Ax, and designing again would not necessarily converge. A note at the bottom of the shear results table indicates if any walls fail this reason.
When design as group is activated for a standard wall that has the same materials as another standard wall group, the program sometimes assigned individual shearwalls to the wrong design group, that is, to a design group for a standard wall group other than the one designated for that wall. This has been corrected
The Design in Group feature proved to be difficult to implement for a wall that had been created input of walls in the structure rather than via Standard Wall input, because there is no standard wall associated with the wall and design groups are accomplished through standard walls.
For this reason, the program now allows you to create standard walls from regular walls as follows:
When clicking "Edit Standard Walls" while there is a wall selected which does not match any standard wall, the program now asks you if you wish to create a standard wall based on the selected wall. If you create a standard wall in this way, the Design as Group setting is checked for the standard wall and the Design in Group checked for the selected wall.
This feature enhances the program usability in general, similar to the creation of a new font style in a word processor using the font attributes of the selected text.
When selecting a standard wall to assign to a physical wall, the number of wall studs was not being accounted for, so that if there were two standard walls that were identical except for the number of wall studs it sometimes would cause the program to assign the wrong standard wall to the selected wall. It was also not possible to select one of the standard walls in the Edit standard wall view.
Whether or not it happened depended on the order of the near-identical standard walls in the list of walls. It has been corrected.
In wall input view, if you selected "Both sides the same" and specified unknown values, and then deselected Both sides the same, the unknown values were still recorded in the interior sheathing, even though design for unknowns is not done independently for interior sheathing. If these unknown values were not changed, the program would design using the weakest materials in the list, and would show question marks (?) in the Wall Design Groups output table for the interior sheathing.
Now, when you deselect Both sides the same, the program changes any unknown values on the interior surface to the weakest possible. Unless changed, these materials now show up in the Design Group Output.
The Hold-down Design table of the Design Summary output was reporting walls as having failed hold-down design for multiple building levels when it only failed hold-down design on the lowest level listed. This has been corrected.
If only rigid diaphragm analysis was selected in the Structure Input view, the program showed failure for non-shearwalls in elevation view, even if the walls are strong enough to resist design. In the Components and Cladding table, the program showed a warning that these walls do not have shear resisting materials, even If they did.
This problem disappeared if you chose to do both rigid and flexible design. It has now been corrected.
The title in the program output "Wind Suction Design" has been changed to "Out-of-plane Wind Design". This is because the governing condition can be either suction or bearing of wind.