What is the strength difference of a pressure treated 2×6 vx a standard Standard Yellow Pine 2×6? Can pressure treated lumber be used for rafters?
Thanks for your insight,
Bill
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Replies
PT these is is ACQ and as far as I know it is almost all southern yellow pine.
NO.
Depends.
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PT WHAT?
If you are talking about stock lumber, most (all) of it east of the rockies is SYP.
On the west coast (or parts of it) they use different wood.
and what is the application? there is a derating for wet applications.
.
A-holes. Hey every group has to have one. And I have been elected to be the one. I should make that my tagline.
In Texas, I assume that the PT IS SYP!
I don't see why it could not be used for roof framing, but why spend all that extra money for the lumber and for the SS fasteneres?
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...why spend all that extra money for the lumber and for the SS fasteneres?
Hi Piffin,
When the local Home Depot's new manager started about 18 months ago, she started a "new policy". All their culled lumber is now cut into 4' lengths and buried in a landfill, so I started buying the "Cull Carts" at Lowes.
Many times the pressure treated lumber has just dried too fast on one side causing it to look like a boomerang.... When wet with the garden hose and allowed to dry evenly, 75% of the boards straighten out.... Last night I bought $197.00 of culled lumber for $20, and on the cart were half a dozen pressure treated 16' long 2x4's, some Red Cedar, and 22 pressure treated 10' long 1X4's. When I get this pressure treated lumber, and out of the long pieces I can cut an almost perfect 8' or 10' length out of it, if not use the whole board, it is too good of a value to pass-up, even if I have to buy galvanized nails....
Last summer I built a 10'x20' and a 12x12' Victorian style raised bed planters, and except for having to buy new 4x4's to make the decorative posts on the bandsaw, I used the ACQ pressure treated lumber found on cull carts. Wet down and using clamps to pull the 2X6 lumber straight, it cost me about 12% of new pressure treated wood. Galvanized lag bolts came by the pound from Tractor Supply.
Jim's link to Southern Yellow Pine "end uses" is a great site.
Thanks for everyone's help.
Bill
OK, I remember your situation now
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!
I don't think that treated SYP has the same design values as non-treated SYP. Here's a link that has probably more information than you want http://www.southernpine.com/