> >
> > Maybe I should just dig a new hole!
> >
> I didn't get your original post so maybe you could let me know what
> the existing base size is and what size you need for the Wilson.
The existing tower is a Universal aluminum, sitting on 3 yards (4x4x5)
of concrete.
The new tower is a Wilson MT-61B (earlier version of US Tower MA-550
tubular) on a MARB base. This base is a 4-hole flat plate which expects
to snuggle down on four 1-inch bolts "pointing up". Really only need 2
yards, but I always over-engineer for 'safety'. (Can have as many as
13 granchildren roaming my back yard!)
> I take it you're trying to use an existing base for a new tower -
> that's a good idea. A new hole is the best idea but with good engineering you
> can adapt the existing one. Instead of welding the new plate to the existing
> stubs, I'd rather see the stubs cut right at the top of the concrete. Then
> you can drill new holes in the concrete and use epoxy to install new anchor
> bolts.
Never did epoxy in concrete. Where do you get it -- is it strong enuf?
> If you're going to expand the anchor, you'll need to attach the existing
> concrete to the new stuff. Use your rented concrete drill to drill some hole
> that you'll epoxy rebar into the new pour.
My current block is more than adequate to hold the Wilson -- any
reason I ought to overlay more concrete with your "drill/epoxy"
scheme?
73, Hans, K0HB
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