[TowerTalk] Rohn 25 base3

[David Robbins K1TTT]

They used to at least.  The bpc24g was a flat base with just a center and
one side hole for some reason.  But they also had the pbh25g that was a
hinged base plate that had holes around the perimeter to anchor it to the
base... obviously needed for securing it for tilting up a tower.


David Robbins K1TTT
e-mail: mailto:k1ttt at arrl.net
web: http://www.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
 

> -----Original Message-----
> From: towertalk-bounces at contesting.com [mailto:towertalk-
> bounces at contesting.com] On Behalf Of Pete Smith
> Sent: Thursday, August 04, 2005 18:39
> To: K7LXC at aol.com; towertalk at contesting.com; giw at bellsouth.net
> Subject: Re: [TowerTalk] Rohn 25 base3
> 
> Does Rohn really make a base plate like this?  The only one I'm aware of
> for 25 is the pier pin base, which has one hole in the middle (more or
> less).  For a guyed tower, the base requirements are really minimal -
> sufficient resistance against downforce and a little for lateral movement
> of the base -- in fact, some analyses suggest that the pier pin, where the
> base is free to tilt or twist a little, may be the best from the
> standpoint
> of distributing stresses (or anyhow, avoiding a "hot spot" at the bottom.
> 
> So maybe all you need is a pier pin and 1 8-inch hole.
> 
> 73, Pete
> 
> At 12:38 PM 8/4/2005, K7LXC at aol.com wrote:
> >In a message dated 8/4/2005 9:07:24 AM Pacific Daylight Time,
> >towertalk-request at contesting.com writes:
> >
> > >  A friend wants to replace and old free standing hbx tower with a new
> > Guyed
> >60 foot Rohn 25. He wants to use the old concrete in the ground  by using
> a
> >new Rohn base plate and drilling 4 holes into the old concrete and adding
> >large
> >long bolts and using epoxy to hold them in. Does anyone have experience
> with
> >this approach and any positive or negative comments. thanks van
> >
> >     Yep, that's the way you do it. Rent an impact drill and bit and
> you're
> >good to go. Drilling doesn't take long at all. The rental place probably
> >has the
> >industrial concrete epoxy you need too. BTW the epoxy is stronger than
> the
> >concrete. People use this technique every day.
> >
> >Cheers,
> >Steve    K7LXC
> >TOWER TECH -
> >Professional tower services for commercial and amateur
> >Cell: 206-890-4188
> >_______________________________________________
> >
> >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 at 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 at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk