I originally grouted the base of my UST as per the drawings...
But when everything was up we found that the tower stuck a bit when it was
rotated which is a symptom of slightly off skew tower...
So we jackhammered out the grout and relabeled the tower using the leveling
bolts... and the tower turns smoothly again...
Needless to say the grout did not go back...
__________________________________________________________
Howard S. White Ph.D. P. Eng., VE3GFW/K6 ex-AE6SM KY6LA
Website: www.ky6la.com
"No Good Deed Goes Unpunished"
"Ham Antennas Save Lives - Katrina, 2003 San Diego Fires, 911"
----- Original Message -----
From: <K7LXC@aol.com>
To: <towertalk@contesting.com>; <jperalta@tampabay.rr.com>
Sent: Tuesday, August 15, 2006 5:23 AM
Subject: Re: [TowerTalk] UST base grouting
In a message dated 8/13/2006 11:35:11 A.M. Pacific Daylight Time,
towertalk-request@contesting.com writes:
> A friend and I were discussing his installation of a UST TX-455. I
mentioned that it's a good idea to use a non-shrinking grout under the
base. To which he replied that UST said that grouting isn't needed if
the leveling bolts are used. I checked their website and the TX-455
foundations diagram does state this.
> I was thinking that if the leveling bolts are used that is when grouting
was needed. If for nothing else to keep water from standing around the
bolts. Doesn't the grout provide some load support for the base? And if
you don't use leveling bolts and the base is setting directly on the
slab how could you use the grout.
Yes, the grout takes some of the vertical load - that's why you're
supposed to use non-shrink grout. The problem is that it's not easily
available. I
get mine thru a masonry supply store but they don't sell at retail. Your
big
box hardware stores are hard pressed to have it so using it becomes a
little
problematic.
Cheers,
Steve K7LXC
TOWER TECH -
Professional tower services for hams
Cell: 206-890-4188
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