[RE-wrenches] dpw top of pole mount pipe problems

[Glenn Burt]

Our engineer has told us that filling a pipe with concrete (for a pole mount
application) is not strengthening it.

As soon as the wind blows & the pipe bends/twists the concrete begins to
break up inside, making it useful only as a water wick.

 

We did a few this way, but ultimately stopped (concrete filled that is, not
well pipe).

 

FWIW

 

-Glenn

 

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of North Texas
Renewable Energy Inc
Sent: Monday, February 02, 2009 12:02 PM
To: ryan at solar4maine.com; RE-wrenches
Subject: Re: [RE-wrenches] dpw top of pole mount pipe problems

 

Filling the pipe with concrete would strengthen it quite a bit but will also
cause condensation on the outside during a lot of the year. 

Did I mention that pouring concrete from a half full 5 gallon pail while on
a ladder is a real pain. 

Jim Duncan
North Texas Renewable Energy Inc
817.917.0527
ntrei at earthlink.net
www.ntrei.com 

  _____  

----- Original Message ----- 

From: ryan at solar4maine.com 

To: re-wrenches at lists.re-wrenches.org 

Sent: Monday, February 02, 2009 10:40 AM

Subject: [RE-wrenches] dpw top of pole mount pipe problems

 

Wrenches i have a customer that wanted to install a dpw top of pole mount
for 18 sharp 180 watt panels. he installed his own pipe and even after
several reminders by me and a signed contract stating shcedule 80 8 inch
steel pipe he installed a 8 inch cast iron water main.

 

My dilemma is this he claims to wave my liability in this install but he has
been a very high maintnence customer and seems to forget everything we talk
about or he signs. so would you go ahead with the install or is the cast
iron going to shear off and the rack fall over?

 

financially i have met my obligations with the customer i can wave the labor
cost and tell him to find someone else at this point if need be i dont want
to be liable for spilling 18 panels on the ground and my insurance wouldnt
cover it as we went against dpw's recomendations

  _____  

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