Hybrid Car – More Fun with Less Gas

mounting panels on a misshaped roof? - Page 2

register ::  Login Password  :: Lost Password?
Posted by bealiba on August 27, 2008, 1:16 pm
 

Yeah. Will do a sketch for you. Otherwise the rack concept is there.
Roof mount, ground mount even straddle the ridge. It can be adapted.

Well the US is almost alone in being imperial. I'm in Australia. I got
the feet quite cheap as I ordered by the hundred when I was doing the
work.


Posted by wmbjkREMOVE on August 26, 2008, 12:54 am
 
On Mon, 25 Aug 2008 15:06:39 -0700 (PDT), "elijahs@gmail.com"


I've seen a few C-band satellite dishes mounted on a tall pole at the
end of a house. Imbed the pole, and then tie it properly to the
structure, and/or use some angled struts for additional support.


Too many variables to say, but your description of a hack job doesn't
bode well.  :-)  The pole mount has fewer variables if you can manage
it, and gives you the option of going somewhat higher than the roof
line. Either way, you should get somebody with some real experience to
take a look at the job before making a decision.

Wayne

Posted by elijahs@gmail.com on August 26, 2008, 11:15 pm
 On Aug 25, 2:54pm, wmbjkREM...@citlink.net wrote:

and that's the crux of my question - what is "tied properly" for a 4"
pipe poking up through the roof with a pile of expensive heavy panels
on it?  The roof is a big A-frame; I envision putting a series of
horizontal 2x4 "ladder rungs" between one of the 4x4 uprights that
support the ridgebeam, and a rafter, and having the pole run
perpendicular to these rungs, tied to each with a U-bolt.  How many
rungs?  how many connections?  how long should the support area be (is
4' from the bottom to top support enough)?

thanks so much

Posted by wmbjkREMOVE on August 27, 2008, 12:51 am
 On Tue, 26 Aug 2008 16:15:04 -0700 (PDT), "elijahs@gmail.com"


I was talking about running the pole to the ground. Depends on the
soil, but generally something like 18" square and 6" thick would be
sufficient. The idea is that the bottom of the pole is restrained, and
the down-force is transmitted to a pad or footing that won't sink. If
the pole isn't too long, then some of the side force can be
transmitted to the ground as well by considering the pole as mostly
free-standing, and anchoring it like a post.


Assuming the wood structure can stand the side force, then anchoring
the pole for say, 8' below the ridge should do it. Maybe 3 brackets.
I'd urge caution though, the amount of leverage an array can exert in
high winds needs to be taken seriously. U bolts alone might allow
fretting. You should post some photos of the structure and more
details if you want to do the job properly.

Wayne

Posted by elijahs@gmail.com on August 27, 2008, 5:03 am
 

now that's interesting - something I hadn't thought of - running the
pole to ground.  I have a high peak to my roof so it would be like a
30 foot pole!  but it would be a lot more solid.

maybe running it into some of the second floor framing - 4x6 under
there - would be a happy medium; take the pole weight there, and
bracket the shit out of it up above there... hmm...



ok, along those lines - do you (or anyone) know of any source for the
sorts of brackets that tie 4" poles to each other and to framing?
above and beyond u bolts... I know there must be a generic
manufacturer but the only stuff I've seen is through the pole mount
manufacturers...

thanks again!

 elijah

This Thread
Bookmark this thread:
 
 
 
 
 
 
  •  
  • Subject
  • Author
  • Date
please rate this thread