Hi Jeff,
I use them all the time and love them.
however I did see two that while didn't fail where failing.
The wind direction was due east and west.
This caused the main pivot bolt to wear excessively and also bending
the strongback allowing the rack to rock side to side.
The customer had to actually install heavy straps to prevent it from
rocking.
jay
peltz power
On Feb 3, 2009, at 10:00 PM, Jeff Yago wrote:
We have installed lots of pole mounted systems and we stay with what
is recommended by the racking manufacturer.
I have witnessed several different top of pole solar arrays and
solar-powered street lights that had been installed by others that
were swaying 2 to 3 FEET at the top, and twisting almost 90 degrees
of rotation during brief very gusty winds. Yes, these were tall
poles which allowed more twisting and bending than a typical 8 to 10
foot hight pole, but I can guarantee you if these were made of cast
iron they would have snapped off in minutes.
Its hard to believe just how far steel can twist and bend when
supporting a large surface area in high winds without damage. I say
you should tell your client to install a nice basketball net on his
pole and then you should run as fast as you can and don't look back.
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