>From my many years as a licensed contractor in Chicago and helping tower
installations I've found a common problem.
When using a piece of plywood as the template for holding the bolts during
the concrete pour, I've found that people have nudged the bolts slightly out
of plumb during the actual pouring.
Even a slight amount of difference between the true vertical plane will
cause the bolts sticking out of the concrete to not fit the tower base
plate.
This will cause difficulties in installing the plate.
And the longer the bolt length above the plywood, the more the possibility
of error.
I've found a way to protect against this.
Use two pieces of plywood with a 2x4 in between. And then drill your hole
with a bit that is the same size as the bolt or just a hair larger.
Use a nut and washer on each side of the plywood and tighten securely.
I hope you can picture what I'm describing.
This is a technique we use to set bolts which will hold up steel columns.
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Drugs may lead to nowhere, but at least it's the scenic route.
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Bill H. in Chicagoland
w9ol@billnjudy.com
www.billnjudy.com
http://files.billnjudy.com
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