Detailed Shear Wall Design Output

The program outputs detailed intermediate calculations leading to the calculation of the shear resistance V_rs from O86 11.6.2.2 for wood structural panels and 11.6.2.3 for gypsum wallboard (GWB). (Note that if you have selected the O86-09 option in the Design settings, this output does not appear.)

This output is accessed from the Detailed Shear Walls design tool bar button and shows the following data.

A table of all symbols used, showing
- Symbol
- Definition of symbol
- Units used in O86 when defining or using the value
- Units for value used in Shearwalls for the current unit system selection in the Format Settings
- Reference in O86 to where it is defined or calculated
A list of the equations for Vrs and all intermediate equations and expressions and their references in O86
The values of factors and parameters applicable to all shearwalls:
- Safety factor j for both wood and GWB
- Load duration factor KD
- Diaphragm construction factor for nail resistance JD
- Treatment factors for panel bending KTp and for nailing in stud KTn
- Service condition factor for nailing KSF and for panel bending KS
- Number of shear planes for nail calculations ns = 1
- If the Always Use DF Plywood Specific Gravity design setting is selected, the specific gravity G for nail resistance
For each shear wall, organized first by level, then by orthogonal direction, then by shear lines:
- The height of the wall and the total shear resistance Vrs
- A table showing the information for panel buckling Vrs from 11.6.2.2.(b) The following are shown for each wall segment and each side of the wall :.
  - Segment length Ls
  - Sheathing thickness t
  - Shear resistance Vrs/ Ls
  - Panel buckling strength vpb
  - Panel buckling factor Kpb
  - Larger and smaller dimensions a and b.of critical panel
  - Magnitude of the resulting line load on the diaphragm at start and end of load
- A table showing the data needed for nailing Vrs calculations from 11.6.2.2.(a)
  - shear resistance Vhd /L without hold-down factor J hd
  - unit shear strength vd
  - unblocked factor J us
  - fastener spacing factor J S
  - nail spacing s
  - nail diameter dF
  - sheathing thickness t
  - unit shear strength v d
  - factored nail strength N u
  - nail penetration length,
  - yield modes a,b, d, e, f and g for unfactored nail strength nu with an asterisk on the critical mode
  - a note if the critical mode is a non-ductile mode
- For gypsum wallboard, panel bending calculations are not done and the values of vd,Vhd and Vrs derived from 11.6.2.3 appear where nailing data appear for wood structural panels. The other data are zero or blank.
- Tables showing the determination of Vhd and the critical Vrs for each side, as described in Vhd Calculation and Combining 2-Sided Sheathing. There is one table each combination of flexible and rigid diaphragms and wind and seismic design. For each wall segment, they show
  - the Vhd/L on each surface derived from lowest of the panel buckling Vrs/L or nailing Vhd/L
  - the combined Vhd/L
  - For each force direction along the shear line:
  - the uplift restraining force Pij used for Jhd
  - the hold-down factor J hd
  - the lowest of the Vrs/L = Vhd/L x Jhd for nailing and Vrs/L = Vhd/L for panel buckling, i.e the critical Vrs/L on each side.