[TowerTalk] 2 pier pins
Jon Zaimes AA1K
jz73 at verizon.net
Fri May 26 02:10:33 EDT 2006
The Rohn flat base plate is designed to be used with one pier pin, in the hole centered between the 3 legs.
I've found some of these with an extra hole out near the edge -- maybe for attaching a rope for carrying. Others I've seen have had four smaller holes out hear the edge, apparently for bolting to a concrete base rather than using the pier pin.
The idea of the single pier pin is that the tower can rotate on it when it is twisting in the wind -- rather than twisting the tower itself.
pix of mine at www.aa1k.us.
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