Alpha Technologies Underground Battery Vault - Manual (Page 9)

031-040-B0-002 Rev. B
9
Vault & Lid
Optional concrete pad
(4” to 6” thick) Compacted backfi ll
Compacted
backfi ll
Drainage gravel
(6” deep typical)
For installations where the optional concrete pad is not used:
1. Excavate the site approximately 6” deeper than the overall height of the vault. The length and width
of the hole should be 4” to 6” more than the width and depth of the vault.
2. Use 6” of compacted gravel as a base for the vault. Level the gravel so the top of the vault is fl ush
with grade.
3. Finish installation by adding backfi ll and compacting.
For installations where the optional concrete pad is used:
1. Excavate the site approximately 6” deeper than the overall height of the vault. The length and width
of the hole should be 4” to 6” more than the width and depth of the vault.
2. Use 6” of compacted gravel as a base for the vault. Level the gravel so the top of the vault is fl ush
with grade.
3. Install shims on each side and end to prevent defl ection.
4. Add
backfi ll and compact to a depth of 8” below grade.
5. Build form around vault to make a 6” wide collar around the vault.
6. Once concrete sets, fi nish backfi ll to grade.
Undisturbed soil
2” PVC conduit for wiring
(provided by installer),
broken out of enclosure at
appropriate location for
installation.
2. INSTALLATION
2.1 Site Prep and Installation
Fig. 2-1 Typical site for UBV