On Wed, 15 Jan 2014 19:55:05 -0500, "Ralph Mowery"
wrote:

While on the subject of tower bolts, why does Rohn 25g tower use two
differant size bolts on the legs ?

I guess you mean this collection of bolts?
http://antennapartsoutlet.com/Pages/Products/ROHNPages/R25JBK.html

My guess(tm) is that the larger 5/8" bolts go on the bottom set of
holes, which aligns the tower vertically and carries most of the
vertical load (tower weight). These lower holes are probably drilled
more accurately than the upper holes. The smaller 1/2" bolts fit
loosely into the upper 5/8" holes in case someone didn't bother
drilling the tower and the base with the same distance between bolt
holes, or that the tower legs became bent, stretched, twisted, or
mangled. This is only a guess(tm).

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558