[TowerTalk] Tower Base Anchor Bolts
Gary J - N5BAA
qltfnish at omniglobal.net
Sat Nov 9 21:22:16 EST 2013
They are easy to find on EBAY. Just watch out which connector you need -
Spline, SDS, SDS-Max. They are not interchangeable. Do a search for
"rotary hammer drill". I lend my drill and bits out to radio club members
whenever needed. It's so rocky here we use the drills to drill holes for
T-posts and ground rods.
HCARC Secretary 2013/14
From: Mike VE3YF
Sent: Saturday, November 9, 2013 1:37 PM
To: towertalk at contesting.com
Subject: [TowerTalk] Tower Base Anchor Bolts
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
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