Hi, John --
Good engineering points. I am going by the advice of PE Hank, KR7X, who
advised me of that. He pointed out that the typical allthread is the same
material as the US Towers J-bolts. I'm 99% sure that's what he told me. I
suppose I
could be wrong.
I don't remember if the original poster said what kind of tower it was
for, probably some ham application that won't be anywhere near the stresses
needed for failure.
How about this? I have ordered anchor bolts for Trylon towers and they
sent me lengths of REBAR with rebar nuts. Very coarse threads and questionable
strength IMO. I used the rebar but had the nuts welded on since I didn't want
them loosening up. I would much prefer allthread in this case.
I guess my point was that there are more options when it comes to the
anchor bolts, especially the bottom end - nuts instead of bent in a "J".
Cheers,
Steve K7LXC
_______________________________________________
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@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|