On Wed, 21 Jan 2004 mahlonhaunschild@cox.net wrote:
> I have a couple of questions pertaining to Rohn 45G foldover tower design &
> installation. I have studied the most recent Rohn installation guide for the
> 25G and 45G towers. My 45G foldover tower will be 68 ft, installed by the
> book (e.g. two sets of four guys each, per the guying diagram in the book.
> Five foot deep by three feet square concrete base, w/UFER ground rebar cage).
> And actually it's the book that prompts my questions, as you will see:
>
> 2. Are the two bolts used to bolt the hinge together at the shipping flanges
> during installation (but removed to fold the tower over) to be reinstalled
> after the tower is raised back to the vertical position, or are the two hinge
> bolts plus the boom sufficient to keep everything in line during normal use?
> (this assumes that the bottom of the boom is pinned where it encircles the
> tower leg). The book says to remove the bolts to fold the tower over, but
> never tells you to put them back after you put it back up. Putting those two
> bolts back in their holes might be a bit difficult...
>
When I installed my Rohn 25 foldover in 1992, I removed the shipping bolts
and never put them back. When the boom is up against the tower, the hinge
section is held tightly closed. Since I'm out in the country, I added
four Phillystran guys near the top of the tower because the upper section
wiggled around in the wind without them.
73, Drew
*-----------------------------*-------------------------------------*
| Andrew B. White K9CW | internet: k9cw@prairienet.org |
| ABW Associates, Ltd. | phone/fax: 217-643-7327 |
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