[RE-wrenches] Tall pole mount

North Texas Renewable Energy Inc ntrei at 1scom.net
Tue Mar 22 08:25:46 PDT 2011


Holt, the rule of thumb is equal parts pipe above and below ground. In your
case you might want to consider a large belled 36" diameter concreate pier
with a ring of oversized anchor bolts. The pole bottom would need a large
flange with very robust gussets. Extend that larger base, 6-8 feet up and
scaled down to a smaller diameter pole to the top. You'll want to do the
complete assembly and wiring before lifting into place with a crane. Kind of
like a mono-pole wind turbine.
We've built trackers of ~125 sq ft PV area in high-wind locations and
mounted them on Wattsun AZ-225 dual axis tracker drives. The 225 is designed
for up to 225 sq ft of PVso the system has very little movement from the
undersized array even in high winds like today.
You'll get some pretty scary movement at that height regardless of the pipe
size.

Jim Duncan
North Texas Renewable Energy
NABCEP Certified Solar PV
Installer No.031310-57
TECL 27398
ntrei at 1scom.net
817.917.0527
www.ntrei.com


  -----Original Message-----
  From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org]On Behalf Of
holtek at sbcglobal.net
  Sent: Tuesday, March 22, 2011 8:13 AM
  To: RE-wrenches
  Subject: [RE-wrenches] Tall pole mount


  Situation:  Client has limited locations for array due to trees. There is
one spot that would work IF pole mount is 20-25' (that would put the array
top edge at 30'+). Will need to incorporate tracker to maximize production.
Will definitely be consulting structural engineer.

  Questions: Anyone tried this? Comments or lessons learned?

  Holt E. Kelly
  Holtek Fireplace & Solar Products
  500 Jewell Dr.
  Waco TX. 76712
  254-751-9111
  www.holteksolar.com

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20110322/27189f9e/attachment-0004.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: North Texas Renewable Energy Inc.vcf
Type: text/x-vcard
Size: 166 bytes
Desc: not available
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20110322/27189f9e/attachment-0007.vcf>


More information about the RE-wrenches mailing list