[TowerTalk] Rohn 45G foldover questions

mahlonhaunschild at cox.net mahlonhaunschild at cox.net
Wed Jan 21 13:48:46 EST 2004


Hello, list.
 
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:
 
1.  The book doesn't specify the use of the 45G short base for the tower in the drawings or installation text, instead specifying that one entire 10 ft straight section be used (embedding 5 ft of it in the concrete base; this 
results in a 64 ft tower).  Some of the materials in the book seem to indicate that the short base is allowable.  I'd like to use the short base if at all possible.  Any ideas why Rohn would not use the short base for the 45G 
foldover, and can you foresee any difficulties with using the short base?

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...

regards,

Mahlon - K4OQ




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