Concrete Pad Details for Ground-mounting Powerwall on Poured Concrete with an Existing Structural Wall
A6
In this mounting configuration, a concrete pad is constructed at the base of the existing wall capable of supporting Powerwall. Powerwall is mounted to the wall, allowing it to be vertically supported by the concrete pad and laterally supported by the existing wall.
Note
All wall framing referenced in the
details must be part of the home's main permitted bearing wall and/or lateral force
resisting system. The contractor and their licensed design professional are responsible
for ensuring the walls, and their load transfer connections, are structurally sound to
support all code-specified vertical and lateral loading imposed by the equipment.
Note
At the contractor's expense and with no
liability to Tesla, the homeowner and contractor can work with a third party licensed
engineer and AHJ to develop alternative supports.
Concrete Pad Sizes
| Number of Units | Pad Width | Pad Length |
|---|---|---|
| 1 Powerwall | 16 in (406 mm) | 34 in (864 mm) |
| 2 Powerwalls | 16 in (406 mm) | 34 in (864 mm) |
| 3 Powerwalls | 20 in (508 mm) | 34 in (864 mm) |
Concrete Pad Requirements
- Within the perimeter of the pad, excavate and remove all loose and organic material, compacting soil to a level surface. Embed the concrete in the soil per detail (below). Compact and fill a 4-inch thick base of crushed, course stone when 10PSF or more ground snow load is expected in site-specific design criteria
- Concrete used for pads shall have a minimum compressive strength of 3,000 PSI at 28 days. Work can begin 14 days after the pad is poured
- Concrete reinforcing shall
meet the temperature and shrinkage requirements of ACI 318
- #4 Rebars <=10 inch O.C. (both ways)
- ASTM A615 Grade 60 (FY = 60,000 PSI)
- Minimum 3 inch cover for concrete facing soil
A7 - Concrete Pad Details for Ground-mounting Powerwall on Poured Concrete with an Existing Structural Wall
