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  #1  
Old 08/18/2004, 08:19 PM
carleast carleast is offline
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Join Date: Dec 2003
Location: CT
Posts: 124
How much weight can a 4x4 hold??

I am building a stand to hold my refugium and I am wondering how much weight a 4x4 can hold if the only support is two legs on either end of the 4x4? the length of the 4x4 is 82". All of the 4x4 are pressure treated, don't know if that makes a difference.
  #2  
Old 08/18/2004, 09:46 PM
hsvtoolfool hsvtoolfool is offline
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Join Date: Jun 2004
Location: Huntsville, AL
Posts: 306
Pressure treating weakens lumber, but I don't
know how much. Maybe you can find statistics
on the web.

The chemicals injected into the wood are toxic.
I think PT lumber contains both insecticides and
fungicides. Bad news for delicate critters. Heck,
bad news for humans .

"Fresh" PT lumber from the store is practically
dripping wet with these chemicals. If the lumbers
air dries for a few months, it will pose less risk.

Personally, I would not use PT lumber anywhere
near an aquarium.
  #3  
Old 08/18/2004, 10:12 PM
Agu Agu is offline
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Join Date: Oct 1999
Location: Venice, Florida
Posts: 15,230
Besides the nasty chemicals used on pressure treated lumber, ime it's not a reliable product for this application. Treated lumber tends to twist, bow and bend, not attributes you want holding up a tank or refugium.

jmo,

Agu
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  #4  
Old 08/18/2004, 10:25 PM
coralreef321 coralreef321 is offline
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Join Date: Mar 2004
Location: littleton
Posts: 704
I just built a stand how do you tell if it is pressure treated lumber.
  #5  
Old 08/18/2004, 10:34 PM
chucklez chucklez is offline
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Join Date: Nov 2003
Location: Valmeyer, IL
Posts: 199
ussually has a greenish tint to it and has PT stamped on the peice
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