Aspect Ratio Adjustment Options |
  
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Aspect Ratio Adjustment Options |
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NDS Aspect Ratio Adjustment Options
NDS is clear that Wood Structural Panels must have an aspect ratio adjustment factor applied when the aspect ratio (h/b) of the effective panel is greater than 2.
Structural Fiberboard panels must have an aspect ratio adjustment factor applied when the aspect ratio (h/b) of the effective panel is greater than 1.
NDS also provides an exception to the normal adjustment formulas that allows the designer to distribute shear to multiple panels in a wall in proportion to the individual shear capacities of the full height segments (as opposed to proportioning in terms of stiffness).
As of 7/24/2023, the Wood Shear Wall module does not have the ability to consider stiffness. So in walls with openings, it may make sense to use the exception to avoid having to do additional hand calculations. In walls with no openings, it may be permissible to use the standard aspect ratio adjustment (more liberal).
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