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[TowerTalk] Rohn 45 Fold over questions and House Bracket

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Subject: [TowerTalk] Rohn 45 Fold over questions and House Bracket
From: (Mike King)
Date: Wed, 4 Jul 2001 20:45:04 -0500
Hi all,

I was researching the Rohn catalogue on Rohn 45 house bracketed towers and
the fold over version as well.  Looking at non guyed about 44' high.

A few questions:

Looking at the instructions for the Rohn 45 Foldover tower document (Doc
#D-2526), it says to dig the tower base 3' deep.  The Bracketed tower
foundation plan (Drawing #A880445R1) says to dig it 4' deep.  Any big deal
here?  If 3 feet is enough, so much the better.

Also, the house bracket TVROHB - shows that it attaches to two legs of the
tower.  (base of the tower cross section triangle parallel to the wall)

In the fold over documentation, it indicates in many places where a house
bracket can be used in lieu of guying at the hinge point.

The fold over documentation also says if installing adjacent a building,
make sure the hinge is at right angles to the wall to allow the tower to
fold over without the boom assembly hitting the house, this part make sense.

However, if that is the case, how does one attach the house bracket then to
only one leg?  Or in that case does it actually attach to all 3 legs? (Base
of the tower cross section triangle at a right angle to the wall)

Now, I can handle it if I have to have the tower fold over on the roof, but
would rather it fold to the ground.  Anyone have experience with this?  Is
there any interference from the house bracket to the boom assembly?  Seems
to me that there would be a problem with this if the tower folds down
parallel to the wall, the boom assembly would fold down into the side of the

Or in this case, would one use the HBUPM?  This however would not follow the
prime directive.  I dont think I saw the two systems described together...

Additionally, can someone comment on the bracketed Rohn 45 chart on bracket
elevation.  As for instance, they all show two heights, a lower and upper.
If the Upper is higher than the building, such as for the 40' tower unit,
30', then what does someone do?  I dont see any specs that show how high one
can go with a bracket in the 20' range, other than the fold over specs where
it indicates that the house bracket be within 2' of the hinge.

Any thoughts?  Ideas?  Suggestions...


Mike- KM0T

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