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General
Metric Force Input Precision (Change 80)
The number of digits displayed after the decimal place when forces input as kilonewtons are refreshed has been increased from 1 to 2.
Getting Started with Shearwalls
This box has been updated to
Structure Dialog
Status Bar Messages (Change 58)
Status bar messages have been added to explain the use of each of the input fields in the box.
Wall Input View
Default Sheathing Orientation
The default sheathing orientation for standard walls has been changed from vertical to horizontal sheathing.
Both Sides Same for Sheathing Thickness and Orientation (Change 74)
After checking the checkbox that indicates both exterior and interior surfaces have the same sheathing materials specification, and making changes to the sheathing thickness or orientation, the sheathing on the opposite side to the one you were editing before you checked the box was not being updated for the changed property. This results in walls that are supposed to have the same sheathing on either side not being treated as such in the design engine. If the sheathing also has unknowns, it is possible for the design engine not to design the interior side (Side 2), outputting question marks in place of materials specifications and zero design capacity.
Unknown" Exterior Gypsum Wallboard Thickness (Bug 2200)
If gypsum wallboard sheathing with more than one choice of thickness is selected as the material for the exterior surface, the choice of "unknown" was unavailable from the drop down list of thicknesses to choose from.
Now, "unknown" is available, unless there are structural wood materials on the other side of the wall.
Building Level in Wall Materials Input Label (Bug 2291)
The label on the group box surrounding the wall materials often showed a building level other than the one you had selected to modify the materials on. It now shows the correct level.
Five Ply Plywood for 12.5 mm Thickness (Change 84)
Although you could select five-ply plywood for plywood of 12.5mm thickness, the five plies revert to four plies when the selected wall was no longer selected. This has been corrected.
Openings Input
Impact Resistant Checkbox (Bug 2153)
The Impact – resistant checkbox is shown in the Openings view, but has no effect for the Canadian version of Shearwalls
Load Generation
Snow Load Proportion Note (Bug 2053)
The note corresponding to the asterisk beside the input of snow mass was missing. It now says “25% used, see NBC 4.1.8.2” .
Default , Options and Format Settings
Default Floor Depth
In the Default Settings, the setting Floor joist depth (in) has been renamed Floor depth (in), because the depth includes flooring materials as well as the joist depth.
Default Wall Thickness
In the Default Settings, the Wall thickness has been changed to Wall display thickness, to emphasize that the input affects only the drawing on the screen, and not the actual thickness of the wall studs used for hold-down deflection analysis. The default for that purpose is set via the stud size in the default Standard Wall.
Default Shearline Elevation Offset (Bug 2198)
The default shearline elevation offset has been set to 1 joist depth from 0.5 joist depths.
1/2 of the default 10" joist depth is less than the default plan offset of 6", so that a shearwall on a multi-storey building that was within the plan offset or another would nonetheless be placed on a different shearline, so that it complied with the elevation offset with walls on the level above. For example, a wall offset 6" on the floor below, but not above, would be placed on its own shearline.
The problem was exacerbated by the fact that 1/2 the default joist depth was less than the default snap increment, and walls must be created at least one snap increment apart. Therefore this problem would occur in every case for users using the default shearwalls settings.
Shearwall Material Options for Elevation View (Bug 2150)
In the Display group in the Options Settings, and the corresponding menu items in the Show menu for Elevation View,
Obsolete Options
The checkboxes for Design Warnings and Shearwall Segments Table have been removed. They were obsolete items that had no effect on the program.
Changing the Mouse click interval in the View Settings causes the Display Gridlines every __ snap increments to change automatically when exiting the box in order to maintain the same gridline display distance as before the changes. However, it did so even if the you had changed the Display gridline” manually. Now, the program checks if it has been changed manually before automatically adjusting.
Design Settings
Include Deflection Analysis
A checkbox has been added allowing you to disable the new Deflection Analysis feature, which can be costly in terms of programming time. This checkbox controls other inputs dependent on deflection analysis, such as the Use shearwall deflection to calculate rigidity setting.
Wind Load Design Procedure (Change 105)
Change Wind load design standard to Wind load design procedure. There is only one standard, the choice is of procedures within that standard.
Shearwall Rigidity per Unit Length
The data group previously known as Rigid Diaphragm Analysis has been changed to Shearwall Rigidity per Unit Length, because this rigidity is used for both the distribution of applied loads to the shearlines using the rigid diaphragm method, and for distribution within a line if the Distribute Forces to Wall Segments based on Rigidity box is checked.
A new method has been added to the previous three selections – Use shearwall deflection to calculate rigidity.
Refer to the section in Deflection on Shear distribution within a line for the significance of this setting.
Distribute Forces to Wall Segments based on Rigidity
A checkbox has been added called Distribute Forces to wall Segments based on rigidity. It is active only if
Refer to the section in Deflection on Shear distribution within a line for the significance of this setting.
Height-to-width Ratio (Change 104)
The input for maximum ratio, height to width has been removed from the program, as the CSA O86 mandates this ratio separately for blocked and unblocked shearwalls.
Disregard Shearwall Height to Width Limitations (Change 104)
A checkbox has been added to allow you to disregard the height to width limitations entirely. This is ordinarily used to allow for proprietary non-wood shear resisting elements.
Moisture Conditions
The moisture conditions allow for entry of the precise moisture content, if the “Use deflection analysis” setting is checked, as moisture content is needed to calculate shrinkage. A moisture content of 19% or greater corresponds to wet service or fabrication conditions upon which design factors are based.