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The Equivalent Lateral Force procedure from ASCE 12.8 used by Shearwalls represents the minimum required by Table 12.6-1 for light frame structures and is the one typically used for wood structures.
Simplified Procedure
The Simplified Alternative Structural from 12.14 procedure has not been implemented in the program.
Linear Dynamic Analysis
Linear Dynamic Analysis has not been implemented in the program as ASCE table 12.6-1 says structures of light frame structures are permitted to be designed using the Equivalent Lateral Force procedure of 12.8.
Seismic Force Resisting Systems
The program offers a choice between A. Bearing Wall systems and B. Building Frame systems in table 12.2-1 for the determination of the response modification factor R, the Deflection Amplification factor Cd, and the overstrength factor W0. The seismic force resisting systems are A15 and B22 when all shear walls in the structure are made from wood structural panels only, or if you choose to ignore the contribution of gypsum-based materials using one of the Design Settings for this purpose. Otherwise, the systems are A17 and B24 for "all other materials".
Moment Frame Analysis or Systems
Provisions related to moment frames have not been implemented in the program.
Soil-Structure Interaction
Possible reduction in seismic base shear due soil-structure interaction analysis from Chapter 19 has not been implemented by the program.
Site-Specific Procedures for Determining Ground Motion Accelerations
Site-specific procedures from Chapter 21 have not been implemented in the program; when required you must perform these procedures and input the resulting site coefficients Fa and Fv in the site dialog. The site-specific procedures account for the regional seismicity and geology, and various other factors to determine the effects of ground motion accelerations.
P-delta effects
P-delta effects from 12.8-7 have not been included in Shearwalls.
Seismic Overstrength Factor W0
The overstrength factor W0 from Table 12.2-1 is not applied to the drag strut or force transfer strap/blocking forces directly as per the Exception to ASCE 7 12.10.2.1, which states that it is not required for light-frame wood shear walls. However, this factor is applied to transfer forces from discontinuous shear lines on levels above as per 12.10.1.1 for the purposes of drag strut calculations. The diaphragm design force that includes these forces is also shown in the Seismic Information table to aid you in diaphragm design calculations.