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Jeff,<br><br>
That looks like a really useful product. As an ex-geologist, I
would recommend caution in using this for an application where the soil
may be subject to slippage. On a steep slope, you will likely want
to dig down to a solid layer that will not move. Bedrock would be
ideal.<br><br>
Drake <br><br>
At 09:30 PM 4/24/2009, you wrote:<br>
<blockquote type=cite class=cite cite="">We have an upcoming install for
a residence subject to Homeowners Association controls and they have
demanded that the array be mounted on the ground, not the roof. The
client has a huge yard, but the south facing yard area for the array
slopes down fairly steeply. Of course this is ideal for tilt angle
so we can keep the array just high enough above the ground to crawl under
to wire and put down sheeting material to reduce grass growing.
<br>
<br>
However, this will be a real bear to get a tractor or Bobcat on this
steep slope to auger holes for the concrete piers, and then get the
concrete down to the pour. So I started checking and found a
company selling a self-drilling 2-1/2" galvanized pier that you
auger into the ground with a 3/4" drive wrench. After auger
drills itself all the way down, you add an extension tube that is
adjustable in height. It would be perfect for my application, but I
am afraid its too good to be true.<br>
<br>
Here is a video link for the product.<br>
<br>
<a href="http://www.youtube.com/watch?v=Syl-MKD-1BE">
http://www.youtube.com/watch?v=Syl-MKD-1BE</a><br>
<br>
My concern is will my racking start to move downhill if these posts start
to tilt over from the side loading, and will the pull out of the ground
from a major wind uplift.<br>
<br>
Thanks,<br>
<br>
Jeff Yago<br>
<br><br>
<br>
<hr>
Netscape. Just the Net You Need.<br>
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Drake Chamberlin<br>
Athens Electric<br>
OH License 44810<br>
CO License 3773<br>
740-448-7328<br>
740-856-9648 </body>
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