Did you get soil tests done? That seems really deep. We have strong
clay soils in New Mexico and Colorado, and I've always gone 4 ft in,
and 6 ft out. Never an issue, with wind gusts that have blown debris and
broken modules. No footing trouble though. I could see in a loose,
sandy soil going deeper and wider.
I've gotten much crazier on taller poles. I have a 20 ft tall pole
install, with several cubic yards of reinforced footer under it.
The pole telescoped from 10" at the base to only 4" at the top. Talk to
a local sign company to see what they do. It's sounding like you might
be headed a bit far in the over kill direction.
Ray
On 10/26/2012 1:35 PM, Ryan Harkins wrote:
Hey Wrenches,
I planning some AZ-225 tracker installs, and I would like to avoid
full excavation for slab/pier type and opt for the drilled pier
option. The pier is supposed to be 30-36" diameter and 9.5' deep.
This would require a terex reedrill or similar rig. If you know of a
firm with that equipment in Wisconsin please contact me off list.
Also, one site has a high water table, so any tips on pouring in that
environment would be welcomed.
Thanks
*Ryan Harkins
NABCEP Certified Solar PV Installer /
Project Manager*
Synergy Renewable Systems, LLC
PO Box 58
Stoughton, WI 53589
PH: 608-712-7862
ryan.hark...@energycraft.com <mailto:ryan.hark...@energycraft.com>
www.energycraft.com
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