This may not be specifically applicable to the situation under discussion, but
the concept might be useful. I created a flat-roof "tower" of sorts using a
Radio Shack steel telescoping mast (not the wimpy 10-ft-section TV mast), a
large Radio Shack tripod, and three very heavy concrete deck footings obtained
from Lowe's. I drilled holes in the footings with a masonry bit, and using lead
masonry anchors secured the tripod to the bricks with lag screws. Guying the
mast four ways at the rotor with nylon cord (dacron would be better), I was able
to put up a fair amount of VHF aluminum at fifteen to twenty feet. Could easily
handle a small tribander instead. The mast scarcely moves in 50-60 MPH gusts.
And no holes in the roof! The hardest part was getting the concrete footings up
on the roof. <heez, heez...>
Bill / W5WVO
Carl007 wrote:
> You did not say if you are going to guy the tower to the building
> walls...
>
> If not, you are going to need a very large roof area for the
> non-penetrating base -plus hundreds of pounds of sand bags and cinder
> blocks. You also need to check the maximum loading per square foot
> for
> the roof too.
>
> To be more practical, I would consider a shorter, 10 feet tower or
> tripod, with only half the wind loading.
>
> Carl, NW8Z
>
>
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com] On Behalf Of Gene, sawman2
> Sent: Tuesday, March 23, 2004 7:46 PM
> To: towertalk@contesting.com
> Subject: [TowerTalk] Roof Tower
>
> My Radio club is moving to a new building. We would like to put up a
> Rohn
> 45, 20FT. tower on the roof. We need the tower to hold 10-12 square
> feet
> of
> load. We cannot drill any holes in the roof. We need some kind of flat
> base.
> The tower will be located next to a 6FT cinder block wall which we can
> mount
> too. We are looking for any kind of engineering plans or information
> you
> may
> have. Please e-mail me direct w2npt@arrl.net Thanks to all.
>
>
> _______________________________________________
>
> 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.
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