[TowerTalk] rebar does rust

FireBrick w9ol at billnjudy.com
Fri Oct 13 09:17:42 EDT 2006

The old 'bluing' coating on rebar had a very short lifetime.
The new coating, green in color, is a much better coating.

But that will degrade also.

Just drive by a road construction stockpiling area some day.
You will see piles of rebar that was rejected for rust infiltration.

I can't remember the rejection limits anymore.

But what happened is the rough treatment from shipping and storing/moving chips some of 
the coating off, and then rust starts BIG TIME.

As for a tower section rusting at the bottom of a concrete base.
That thin metal has room to expand. Into the  tube void, hence no pressure on the 

Tower bolts sticking up to hold a base. Should always be rust proofed before attaching the 
They should also be inspected twice a year, and cleaned/recoated as necessary.

There's a fine line between participation and mockery

Bill H. in Chicagoland
webcams at
weather at http://hhweather.webhop.org

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