[Antennas] Slightly OT: How to mate the Rohn 25 base to its footing

[Chris Boone]

I WOULD make sure the base IS level....(if it gets out of level, you will
have a PITA trying to set the 1st section on the base!!)....I would use
galvanized washers....it is not an issue for the base to touch the
concrete...it would be best if the concrete WAS level already...With 45ft do
you plan to use a house bracket on it?? If so, you are good to 35ft above
that...I know of a 60ft Rohn25G with no guys or bracket that rode through
Rita and Ike.....not much load on the top though, but the tower is still up
and straight (well for now..I plan to take it down in the near future and
reuse it...

Chris
WB5ITT

> -----Original Message-----
> From: antennas-bounces at mailman.qth.net [mailto:antennas-
> bounces at mailman.qth.net] On Behalf Of John Hensley
> Sent: Thursday, October 14, 2010 10:29 AM
> To: antennas at mailman.qth.net
> Subject: [Antennas] Slightly OT: How to mate the Rohn 25 base to its
footing
> 
> 
> I asked this question on the Tower-Talk list but its dead right now.I
recently
> had my tower footing with J bolts done while some other work was in
> progress. I was unable to be home so had to leave the job to the
contractor.
> When I got home, the footing pad looked great but its not perfectly flat
and
> the Rohn base plate is really not perfectly flat itself. The contractor
left about
> 1.5 to 2" of bolt exposed (6 bolts in all) spacing the plate off the
wooden form
> with short pieces of re-rod.My questions are: should the Rohn plate be
> protected from the concrete? For example, should I put a spacer piece
about
> the size of the plate inbetween the plate and the concrete? And before I
> attempt to pull down the plate, should the footing be groted to the plate
in?
> Will grout hold up to the weight?Tower to be about 45'.
> Any interested input appreciated.
> Thank you,J.H.