Wood Post preservative treatment question

Posted by Billy NY on July 21, 2006 at 10:57:18 from (64.12.116.74):

Ok, here is a fun one, I am starting phase II of a home project that has been expedited due to free use of a late model CAT 420 backhoe for the past few weeks.

I am going to utilize some timbers that have been hanging around since the late 70's, they are 6" x 8" x 16's and were pressure treated, I think Wolmanized going back that far, which I assume is the same as the copper chromated arsenate pressure treatment used for so many years up to the current time. Not sure if they were .40 CCA or .60 CCA which is more heavily treated. They have been stored up in the air and are in excellent shape, although I dug them out of a stack of materials that I obtained from a project that went bust years ago and the material lay wasting away, carpenter ants did several of these in, but they stayed isolated in some pieces and did not even touch others, so I got em out of there in '00 I think.

I want to set them below grade and use them for posts, to create a 20' x 32' pole barn. Now realizing that these are so old, they may have retained some resistance to decay, but I would like to treat them with something to help them last as long as possible. I have found enough creosote to hand paint them 4 to 5 feet up, there are only 8 of them. I'm not going to deep as I want the ceiling height to be about 12 feet or so. I would have liked to excavate or drill the holes and encase in concrete, but this is another low budget venue, so I'll just set them and backfill and compact. I'm on a hill and the soil is well drained, not water, I just uncovered formwork at the base of my chimney footing that was still intact, amazing actually. So I'm thinking maybe the creosote is the strongest, but if anyone had any other suggestions I'd love to hear them. I wondered if creosote is still available anywhere, or just to the public utility companies for utility poles.

It's another low cost venue, even the roof trusses are free, just that they are short on the span by 6 feet, so I will have to retrofit them to make the span and tie in the upper frame work to really stiffen everything, I'll make it work no doubt and they are 2x6 top and bottom chord so I'll find a way to scab out and secure them, and strengthen to hold the load, they have good pitch, so with metal panels the snow may slide off, I won't count on it though.

Replies:

• Re: Wood Post preservative treatment question Rander 08:42:07 07/22/06 (0)
• Re: Wood Post preservative treatment question noncompos 15:11:09 07/21/06 (0)
• Re: Wood Post preservative treatment question Midwest redneck 14:48:32 07/21/06 (1)
  • Re: Wood Post preservative treatment question Billy NY 15:31:17 07/21/06 (0)
• Re: Wood Post preservative treatment question IH2444 11:21:44 07/21/06 (0)

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