[TowerTalk] Anchor Bolt Grade Suitable for Tower Base?

[K8RI on Tower talk]

Were it me, I'd purchase "J-Bolts" of at least grade 5.

Of course the best bet is to have an engineering study done, or just 
calculate the loads to see just what the stress will be on the bolts at the 
base plate and go accordingly.

I think you will find that the "common threaded rod" is far softer than 
Grade 5.
My experience with the common threaded rod is it rusts easily, but I've 
never used it on a baseplate.

If you go to a place such as prime fastener they can give you the 
differences between the different types of bolt.  I've also looked them up 
on the net, but don't remember the URL.

Good Luck,

Roger Halstead (K8RI and ARRL 40 year Life Member)
N833R - World's oldest Debonair CD-2
www.rogerhalstead.com


>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
>
> _______________________________________________
>
> See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless 
> Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with 
> any questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>