The EPA recently limited the acceptable uses for CCA-treated wood and it
is getting increasingly hard to find (and I suspect the price is
reflecting this).
Bob, N7XY
On Wed, Oct 27, 2004 at 08:27:39AM -0500, Keith Dutson wrote:
> My barn is built on 4X6 20-foot Wolmanized pine posts set in concrete to a
> depth of 4 feet. It was erected in 1977. There is no evidence of rot.
>
> Keith NM5G
>
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com] On Behalf Of Tim Makins, EI8IC
> Sent: Wednesday, October 27, 2004 1:31 AM
> To: TowerTalk
> Subject: Re: [TowerTalk] Mounting a 4x4 in concrete
>
> I think setting timber in concrete is a bad idea. Water can get in around
> the timber and cause rot. Why not set a length of steel I-beam or similar
> into the concrete, and bolt the timber to that ?
>
> 73s Tim EI8IC
> www.mapability.com/ei8ic/
> Ham Map Heaven. Newbie and Contester Resources. APRS stuff.
>
> ----- Original Message -----
> From: "Derek Cohn/WB0TUA" <vibroplex@mindspring.com>
> To: <towertalk@contesting.com>
> Sent: Wednesday, October 27, 2004 5:45 AM
> Subject: [TowerTalk] Mounting a 4x4 in concrete
>
>
> Dear All,
>
> I'm trying to elevate my very low dipole that is fed with balanced line.
> I'm trying to go with a non-metallic support so the balanced line does not
> interact. My dipole is currently 18' in the air.
>
> I recently purchased a 22' fiberglass mast from The Mast Co. This is their
> heavy duty windsock pole. I'm planning on mounting it to a 20' redwood 4x4
> with the Kwik-Block mounting blocks they also sold me. I plan to set the 4
> x4 in concrete.
>
> I checked around and one of the local deck builders says I need to put about
> 4' of the redwood 4x4 into the concrete. That would reduce my effective
> height of the 4x4 to 16'. If I overlap the fiberglass mast a foot or two, I
> have 16' + 20' = 36' which is roughly double the height I have now.
>
> What do you guys think about the 4' of 4x4 into the ground. Too much, too
> little, just right? I noticed that you can put l-bolts into the concrete
> footer and mount a u-shaped bracket on top of the footer that will accept
> the 4x4. This is advertised for deck applications and I think it wouldn't
> support 20 feet of 4x4. However, it would give me four more feet of height
> if it could be made to work. Has anyone tried this?
>
> 73,
>
> Derek Cohn
> Morse Telegraph Club - Alton Chapter
> Telegraph Office UD, sine DJ
> Amateur Radio Station - WB0TUA
> 1969 M274A5 Mechanical Mule
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
> questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
> questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
> questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
--
Bob Nielsen, N7XY n7xy (at) n7xy.net
Bainbridge Island, WA http://www.n7xy.net
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
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