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Re: [TowerTalk] RE: Installing Tower Bolts

To: "TowerTalk List" <towertalk@contesting.com>,"Terry Dunlap" <kk6t@pacbell.net>
Subject: Re: [TowerTalk] RE: Installing Tower Bolts
From: "FireBrick" <w9ol@billnjudy.com>
Reply-to: FireBrick <w9ol@billnjudy.com>
Date: Fri, 1 Oct 2004 15:00:15 -0500
List-post: <mailto:towertalk@contesting.com>
Not really Terry
We are talking about apples and oranges here.
tying the rebar and bolts together is done in NEW pours.
Epoxy bolt installations is for anchoring a new tower base to an old concrete 
base.

Pretty hard to do with already existing concrete.

Totally different installations.




----- Original Message ----- From: "Terry Dunlap" <kk6t@pacbell.net>
To: "FireBrick" <w9ol@billnjudy.com>; "TowerTalk List" <towertalk@contesting.com>
Sent: Friday, October 01, 2004 2:40 PM
Subject: Re: [TowerTalk] RE: Installing Tower Bolts



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


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_______________________________________________

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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_______________________________________________


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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