Re: [TowerTalk] RE: Installing Tower Bolts

[Terry Dunlap <kk6t@pacbell.net>]

This brings up a question that I've had for a while.  It's always 
recommended that  the bolts get
tied to the rebar in a new base installation but it seems to be accepted 
practice to retrofit an
existing base for a different tower by using epoxy anchors.  These anchors 
aren't tied to the
rebar in any way and would be the same as NOT tying bolts in a new 
pour.  Isn't this a
contradiction or at least an inconsistency?

73 de Terry KK6T



At 10:28 AM 10/1/2004, FireBrick wrote:
> As a licensed mason contractor I was frequently asked to help DIY hams 
> pour bases.
>
> wire tying rebar to the bolts is a must, both around the perimeter and 
> with diagonals across the center.
> In addition, I used bolts above and below the bolt template, well tightened.
>
> Those tricks took a few minutes to prepare, but saved many minutes during 
> and after the pour.
>
>
> ----- Original Message ----- From: "Bill Turini" <wtu@cypress.com>
> To: <towertalk@contesting.com>
> Sent: Friday, October 01, 2004 12:18 PM
> Subject: [TowerTalk] RE: Installing Tower Bolts
>
>
> > There was a comment made regarding welding tower bolts together at the
> > base to ease installation.  I ran into problems with my recent
> > installation and have a plan for my next tower base. :-)
> >
> > I built the base per the engineering drawings, and hung the 4' long
> > bolts from the tower baseplate per the factory recommendation. When we
> > poured the concrete into the hole, the bolts were just hanging there,
> > flapping the the breeze, so to speak. We had to halt the pour to
> > reposition the bolts three times, and they never did end up vertical.
> >
> > On the next tower, I'm going to tie rebar horizontally across the rebar
> > cage and secure the bolts to it. That way they'll end up correctly
> > spaced vertically and horizontally. As I said, they're very close, but
> > we had a problem keeping them in position during the pour.
> >
> > As and aside, the concrete pumper got "constipated" during the pour.
> > Boy, I never saw grown men work so fast to try to get it cleared! I
> > guess the thought of all that concrete in the tube and the hopper was a
> > bit daunting.
> >
> > The driver ended up calling in the firm owner and other drivers. I ended
> > up with four folks from the concrete pump firm doing the pour. My
> > contractor and his guys just stood and watched.
> >
> > Bill
> >
> > Bill Turini                         (425) 787-4477
> > IT & Facilities Manager
> > Cypress Semiconductor               Lynnwood, WA  98037
> >
> >
> > _______________________________________________
> >
> > 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