Appendix A: Powerwall 3 Anchoring Details

A1

Table 1. Mounting Design Guidelines Based on Seismic and Wind Speed Conditions
Ground- or Wall-mount Powerwall 3 with Wall Bracket Ground-mount Powerwall 3 on Pre-cast Concrete Ground-mount Powerwall 3 on Poured Concrete with Steel Posts
Wall and Foundation Existing structural wall and existing approved foundation Existing structural wall and pre-cast concrete foundation Poured concrete with steel posts
Seismic Design Category A, B, C, D, or E A, B, C, or D A, B, C, or D
Max Wind Speed

180 mph
Exposure Category C

180 mph
Exposure Category C

180 mph
Exposure Category C
Installation Information Installation instructions Installation instructions (A10 - A11) Installation instructions and anchoring details (A12 - A15)
Anchoring details (A6 - A9) Anchoring details (A6 - A9)
The following conditions will require additional site-specific evaluation by the installing company's structural designer or other qualified person acceptable to the Authority Having Jurisdiction (AHJ):
  • Wind Exposure Category D
  • Wind speeds greater than 180 mph
  • Poured concrete pad information included in the installation manual are required minimums. Contractors can work with a third party structural designer or other qualified person acceptable to the AHJ for further considerations on the new foundation
  • If needed, reference ICC codes and referenced ASCE 7 standards for design criteria