> I seem to recall a thread a long time ago about how Bill, KM9P,
> put up his towers without any assistance. But, except for posting where he
> stated he did so, I cannot find any details about how he did it.
> In particular, once the tower section is hauled up with the gin pole
> how is the tower section moved up and down as needed to seat it
> on the existing tower?
>Terry N4TZ
> Why take the risk...ANY risk for the sake of this hobby? If you can't find
> someone to help you pull up a section of ROHN 25, ...wait for a day when you
> have some help. That
> way when you need to have the NEXT section sent up, there is someone down
> there to tie it on and you don't have to CLIMB BACK DOWN to do it. Sure a
> lot less work when
> you think about it ... and safer to oot. -Mike
At age 38 I erected up my 127' base-insulated Rohn 25G tower solo, except for
the first section where I needed a couple of people to help hold it vertical
while I attached temporary guys to the anchors. After that, I decided it was
safer to do it alone, because the local Hammy Hambone helpers all wanted to be
boss - a sure invitation to disaster, and I couldn't afford to hire a
professional crew.
I carefully studied the Rohn book and other publications on tower erection, and
talked to a few experienced tower workers before attempting the job. It was a
slow process, working on weekends and occasional days off from work during the
week, erecting a section or two up at a time. I had the holes for the concrete
dug by late June, and the concrete poured in mid July, hot as hell. I got the
first 30' erected by cold weather, when I quit for the winter. Started back to
work the following spring and finished around the 1st of May. Eleven months to
complete a job wouldn't have been acceptable for professional work, but since
it was for a personal hobby, I had all the time in the world.
I purchased a real Rohn gin pole along with the tower hardware. At that time,
in 1981, it cost a little over $100. I purchased a spool of of sisal rope, a
little over double the final length of the tower. At the time I used an old
Signal Corps leather climbing belt and ungodly heavy lanyard, having never
heard of a full body harness at the time. I used an extra lanyard so that
whenever I had to cross a guy point, I would secure one lanyard above the guy
point before releasing the one below, in order to remain tied off 100%.
My procedure was to climb the tower, attach the new section, move the gin pole
to the top of the new section, climb back down, attach the rope to the next
section, pull it up to position, tie the other end of the rope to a rung near
the bottom of the tower, then climb to the top, manhandle the section in
place, attach the bolts and then slip the gin pole to top of the new section
and repeat the process. It was slow, and I certainly got plenty of exercise
climbing up and down the tower.
I did have one near mishap. With about 100' of tower erected, I had just
pulled the next section to position, tied off the rope, and decided to take a
break. While resting, I glanced over at the tower just in time to see the
section falling. Apparently I had neglected to tie the rope securely an the
knot failed. I was sure the falling section was going to clip a guy wire and
the whole thing would come down, but the only damage was a chipped strain
insulator and a bent tower section leg, so I had to purchase a replacement.
From then on, I was doubly sure to check the know whenever I tied off a
subsequent section. Since the falling section was still attached to the rope
and pulled it up through the gin pole and pulley as it fell, that slowed down
the descent enough to limit damage.
I never had any problem with fear of heights or climbing towers, but one thing
I could never get used to was being on a tower section or two above the top guy
point and leaning back on the climbing belt, and feeling the whole tower sway
with me. I could stand on the ground and look at the thing thinking, sure
that tower is engineered to withstand the stress from my leaning back, but I
never could convince myself of that while actually on the tower, so I used a
set of temporary guys made of #10 copperweld, moving them up every 10' as each
section was added, attaching them on the climb to re-locate the gin pole. That
slowed down the project substantially, and I knew guys made from #10 wire
would offer little protection, but all the temporary guys had to do was to
immobilise the tower while I moved about in the climbing belt and I felt
perfectly at ease, which certainly made the work less hazardous.
My only assistance was from my wife who would occasionally put stuff in a
bucket which I would haulup using the rope. Once the tower was erected, I
still had to make numerous trips to the top to attach the antenna.
Last spring, at age 72, I climbed the tower several more times to replace the
top set of guys, which appeared dangerously rusted. This time I used
up-to-date safety equipment, including a full body harness, lightweight nylon
lanyards and fall arrest lanyard. I was a little slower than at age 38 when
erecting the tower, but I still felt perfectly at ease on the tower. I did have
an assistant on the ground to help with the work and to call for help in case
of a mishap or medical emergency.
Incidentally, after replacing the guy wires I cut the old ones at several of
the rustiest points, and found mostly sound metal through every strand; the
rust was only a thin layer on the surface. Those guys would have likely
remained intact for years to come, so now I feel guy replacement to be less
urgent. Nevertheless, I have the material on hand and plan to replace the
lower sections of guys next spring, so those guys don't become dangerously
rusted after I'm too old and decrepit to climb.
Don k4kyv
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