Another thing to consider is using a block and tackle with lots of rope to
reduce the load on the gin pole and make it easier for the ground crew to
hoist that heavy mast. If you are using a Rohn gin pole, they are
recommended for 25 or 45 sections only and a 45 section weighs only 70
pounds.
Stan
w7ni@easystreet.com
----- Original Message -----
From: <n4kg@juno.com>
To: <TOWERTALK@CONTESTING.COM>; <stetrekve@yahoo.com>
Sent: Monday, July 08, 2002 5:22 AM
Subject: Re: [Towertalk] mast
> The SCARIEST thing I have ever done on a tower
> was to install a 20+ ft 100 lb. mast in my 130 ft tower.
>
> If your tower is NOT already in place, it is MUCH better
> to place the mast inside the bottom 2 or 3 sections and
> then proceed to finish the tower. ONE way to do that is
> to temporarily strap 4 sections of tower next to the
> permanent tower and use that to raise and insert the mast.
>
> If the tower is already in place, the SAFEST solution is
> to hire a crane. A LONGER than normal (say 12 - 14 ft)
> GIN Pole could also be used IF you really know what
> you are doing and have a GOOD crew and equipment.
>
> I would give serious consideration to the CRANE solution.
> You could then use the crane to also raise the antennas,
> either pre-installed on the mast or one at a time.
>
> Tom N4KG
>
> On Sun, 7 Jul 2002 21:51:01 -0700 (PDT) steve sala <stetrekve@yahoo.com>
> writes:
> > I have a 23.5 foot steel mast that weighs 98 lbs. It
> > is 0.2" wall and 2" OD. I want to put in my 85 foot
> > Rohn 25 tower and put a Force 12 5BA (10.8 sq ft, 72
> > lb) at the 86 foot level, a M2 6 meter beam (6M7JHV,
> > 2.5 sq ft, 17 lb)at 94 feet and a M2 2 meter beam
> > (2M9SSB,1.25 sq ft, 1.2 sq ft) at 103 feet. Does the
> > mast present a problem with its weight? The tower is
> > guyed at three levels for 90 mph per the Rohm book.
> >
> > Steve K7AWB
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