We've installed a number of AZ225s and big Zomeworks trackers to date. There are a number of companies that do foundation pier drilling but only a handful that have the capacity for a 36" pier. Even fewer will drill thru rock if it's down there.
Water must be pumped out when it starts to collect and dealing with that pita is something to take up in advance with the cement contractor. Jim Duncan North Texas Renewable Energy Inc <http://www.ntrei.com/> www.ntrei.com NABCEP PV 031310-57 TECL-27398 <mailto:[email protected]> [email protected] 817.917.0527 From: [email protected] [mailto:[email protected]] On Behalf Of Ryan Harkins Sent: Friday, October 26, 2012 2:36 PM To: RE-wrenches Subject: [RE-wrenches] Wattsun Tracker Foundations 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
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