How about suspending the rebar cage from a couple of 2 x 4's above the top
of the form with some rebar ties?
Or the paving stones / bricks under the cage .. any of these should work!
Shouldn't there be some Sand or Gravel at the bottom of the hole also??
73 de Sid n0obm
At 16:21 08/10/2003 -0400, you wrote:
>Bob,
> Not a Civil Engineer by any stretch of the imagination but one of the
>reasons for not having the rebar breach the concrete is rust. That exposed
>end will make a super-highway for rust and assuming there is a path,
>eventually there will be no more rebar in your concrete. Instead there will
>be nice 1/2 inch paths with nothing but air - or worse - moisture in them.
> No idea where or when I read it but seem to recall the proper method is to
>put something like paving stones of the appropriate size under the rebar
>such that, when the concrete is poured, the paving stones keep the rebar
>away from the surrounding earth and themselves become sealed in the
>concrete.
>
>Mike / W8DN
>
>----- Original Message -----
>From: "Bob Gates" <regates@kingwoodcable.com>
>To: "Tower Talk" <towertalk@contesting.com>
>Sent: Sunday, August 10, 2003 4:11 PM
>Subject: [TowerTalk] Rebar cage for tower footing
>
>
> > I've noted the UST footing design for most/all their towers, and they
>specify a
> > rebar cage with the vertical pieces set approximately 3" above the bottom
>of the
> > footing. This is obviously a clumsy undertaking in the real world,
>because it
> > would entail pouring 3" of concrete in the hole, let it set up, insert the
>cage
> > and continue the pour. After 30 years in the construction business, I've
>seen a
> > few footings poured, and many were designed by engineers who never had to
> > actually install their designs, such as spread footings which are
>extremely
> > labor intensive, and for no reason. To make a long question short, any
>civil
> > engineers out there who see a problem with the rebar cage sitting on the
>dirt
> > floor of the hole and pouring around it?
> >
> > Regards,
> > Bob KG7KW
> > _______________________________________________
> >
> > 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.
>
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