Expansion issues with PVC
 

I've used PVC for enclosures in the past and didn't seem to have any
trouble. But I noticed that on a couple projects we had a couple
things that started to bend from thermal expansion. The sunny side of
the free standing vertical piece heats more than the shadow side, and
the differing expansion rate creates a bend. Even for a 5' piece, it
seemed fairly extreme. But then other times this hasn't happened. We
were using the special furniture grade PVC in 1" size. Anybody had any
experience with this or come up with any solutions? Notice any
difference between PVC types or anything?

Thanks for any help,

Expansion issues with PVC
 

On Aug 3, 5:01*pm, wrote:
On Mon, 3 Aug 2009 14:00:42 -0700 (PDT), Dave D
wrote:

I've used PVC for enclosures in the past and didn't seem to have any
trouble. But I noticed that on a couple projects we had a couple
things that started to bend from thermal expansion. The sunny side of
the free standing vertical piece heats more than the shadow side, and
the differing expansion rate creates a bend. Even for a 5' piece, it
seemed fairly extreme. But then other times this hasn't happened. We
were using the special furniture grade PVC in 1" size. Anybody had any
experience with this or come up with any solutions? Notice any
difference between PVC types or anything?

Thanks for any help,

one ame sure you pvc is white

the other you might try is foil where possible to avoid heat retention
in the first place that rest I can't help with

"one useless man is disgrace 2 become a law firm 3 or more become a congress"
adams

woger you are a Congress all in your own head
"http://www.3ix.org/sys/aff.php?aff=7439" target="_blank"

altopia is never used by KB9RQZhttp://kb9rqz.cc.cchttp://kd8ctl.com
nor is ever
btw i can be found at
17366 N River Rd
Chassel Mi

but the cowards asking lack the gut to act

First you have to determine if all samples are equal and whether your
dealing with open or closed pore or different manufacturers Then
compare with respect to environment. There is no magic solution

Expansion issues with PVC
 

Dave D wrote:
I've used PVC for enclosures in the past and didn't seem to have any
trouble. But I noticed that on a couple projects we had a couple
things that started to bend from thermal expansion. The sunny side of
the free standing vertical piece heats more than the shadow side, and
the differing expansion rate creates a bend. Even for a 5' piece, it
seemed fairly extreme. But then other times this hasn't happened. We
were using the special furniture grade PVC in 1" size. Anybody had any
experience with this or come up with any solutions? Notice any
difference between PVC types or anything?


Do you have anything attached to the PVC? if you have a wire running
vertically, and especially if it is attached tightly, that might account
for a bend.

- 73 de Mike N3LI -