[TowerTalk] Tower Base Anchor Bolts

Mike VE3YF Mike at ve3yf.com
Sat Nov 9 14:37:56 EST 2013


I have ran into a slight problem and need some help.

I am re-using my tower base for a new tower and the bolts that I 
require are 1" x 27" and I have opted for the ASTM F1554 Grade 55, and
to leave 6" above the concrete which means 21" into the concrete.

However in my area all I can find for concrete bits that are 18" long 
x 1.125" diameter.

However I can get a 22" bit x 1.250" Diameter

Is better to stay with an 18" x 1.125" hole and cut 3" off the bottom 
of the bolt or go with a 22" x 1.250" hole and just add more epoxy.

Any help in this matter is greatly appreciated.


73 De Mike


More information about the TowerTalk mailing list