[TowerTalk] UST base grouting

[JC Smith]

Hi Julio,

I have a UST MA-550MDP tower with leveling bolts.  My plans, done by Adam
Ennis, the PE UST was using at the time, call for grouting but I put a good
crown on the top of the concrete base so never bothered to grout.  There is
never any standing water.  The bolts have surface rust but nothing serious.
It's been up since 1993.  The grout would not increase the load support of
the base.

73 - JC, K0HPS

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com]On Behalf Of Julio Peralta
Sent: Sunday, August 13, 2006 10:00 AM
To: TOWERTALK at contesting.com
Subject: [TowerTalk] UST base grouting

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.

All comments welcome.

Julio, W4HY


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