[TowerTalk] Anchor Bolt Grade Suitable for Tower Base?

[Richard (Rick) Karlquist (N6RK)]

> I am installing an LM-470 and prefer to use a base plate for the tilt 
> base that was designed for retrofit to an already existing concrete pad 
> and anchor bolts.  The base plate takes three 1-1/2" anchor bolts, which 
> will be 27-36" long.  I have purchased 10 feet of 1-1/2" threaded rod 
> that meets ASTM specification A307A,B or C.  Apparently, the stuff is 
> known as "common" threaded rod and is the lowest strength available.  Is 
> this rod suitable for this application?
> 
> Tnx and 73,
> 
> Joe
> K2XX

It seems to me that the strength of the concrete limits the safe load
you can put on anchor bolts to a low enough value that ordinary steel
is good enough for the bolts.

Rick N6RK