[TowerTalk] Grout

[Bill Heinzinger]

One of the reasons for packing the void below a tower mounting plate or a
structural column is to prevent trapped water.
Here in Illinois were it get pretty cold in winter, water in a void below
the mounting plate will freeze.
Ice expands as you all know and could deform the mounting plate.
I think I remember from my classes that ice can expand to 3 times and
produce 50K psi.
Don't hold me to that, long time ago. Maybe some PE can give the exact
figure.

----- Original Message -----
From: "Mike O'Brien" <k0myw@worldnet.att.net>
To: <towertalk@contesting.com>
Sent: Friday, July 14, 2000 9:12 AM
Subject: Re: [TowerTalk] Grout


>
> Please pardon my ignorance, but what exactly is the purpose of packing
> grout between a tower baseplate and the top of the concrete pad? I know
> that U.S. Tower, for instance, specifies it, but offers no explanation
> nor directions...
>
> 73, Mike, k0myw
>
>
> K7LXC@aol.com wrote:
> >
> > In a message dated 12-07-00 4.23.31 Greenwich Standard Time,
kn9t@webtv.net
> > writes:
> >
> > >  Need some info on type of grout to use
> > >  under legs and around amchor bolts of free standing towers. Can this
be
> > >  purchased at the local home builders stores ?
> >
> >     Look in the yellow pages under Masonry Supplies or a building
materials
> > supplier. You're looking for non-shrink grout.
> >
> >     I've also used the Home Depot type but it discolored after a year or
two.
> > Works okay but looks pretty grungy.
> >
> > Cheers,   Steve    K7LXC
> > Tower Tech
> >
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>


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