So what I think I'm reading is that I should be ok with the 1/2 x 12 bolts
as opposed to the 5/8 x 12, even though the holes in the heavy plate are
11/16. Once the epoxy holding the J-bolts has cured, I should plumb a
section of tower using bolts & washers on both sides of the plate. Once that
is complete, build a form and grout under the new baseplate and it should be
tower and antenna growing time again. Right?
Mike / W8DN
----- Original Message -----
To: <firstname.lastname@example.org>; <email@example.com>
Sent: Friday, August 02, 2002 10:33 AM
Subject: Re: [Towertalk] 25GSSB New? Baseplate
In a message dated 8/1/02 8:28:01 PM Pacific Daylight Time,
> what is called grout is added under the plate...
> grout is a very flowable version of "concrete" - a small form is made on
> top of the pour and the grout is then mixed and placed into that form ...
> grout is VERY fluid and will flow into even the center of your plate ...
> once it sets you will have the weight being able to be spread out over a
> large area ...
> just prior to doing the grout verify not that the plate itself is level
> - not by checking it - but, by installing the first section of tower and
> making sure that IT is plumb! there may be small irregularities in the
> length of the plate's stubs that slip into the legs or their welding
> which could translate to the plate itself being level but the tower
> section being crooked - which is really what this is all about!
Yes - a typical spec calls for non-shrink grout. I have to go to a
concrete supply house to get the right stuff - I haven't been happy with the
stuff available from the big box hardware store.
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