[RE-wrenches] helical screw piers

[ASAP POWER! 2]

Sounds like we gots to have it.  Larry, any pics?   If I assume correctly,
these are literally screwing into the ground in place of a concrete footing.
such that you can place/attach a structural or pipe column or its part of
the screw.   I can call some local rental yards and do some internet
searching, but is there a brand name to the screw, driver, or a specialized
4WD unit?  How many did you drive for 5.6kW?
 
I had contacted the outfit that advertised on TV/web for a while a couple of
years ago, but wasn't impressed, however, thought maybe with the right soil
it could be exceptional tool for quick guy wire anchoring purposes for wind
towers.   This sounds like something more substantial.
 
Thanks,
Peter D.

  _____  

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Larry Brown
Sent: Sunday, January 25, 2009 5:58 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] helical screw piers


Eric, 

We just used helical screw piers on a 5.6kw ground mount
The site was difficult due to its slope and soft because the frost had come
back out after some warm days
There was an excellent chance that a concrete truck would have gotten stuck
and a back hoe would have made a mess
The 4 wheel drive unit that drives the helical screw piers had no trouble
navigating the terrain, did no damage to the site, was in and out in less
than a day. 
The piers were in two parallel rows and all were within 1/2" of our string,
though that is in the skill of the operator
In very rocky soil it might be more problematic

Larry Brown
Sun Mountain


On Jan 25, 2009, at 8:05 PM, Eric Andrews wrote:


Does anyone have any experience using Helical screw pier footing for ground
mount racks?



Eric 





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