Re: Another ZigBee convert

[Joerg <notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx>]

Hello Larry,

>>Stone is ok. The tough challenges come with concrete that contains spot
>>welded criss-cross rebar. They put rebar into almost anything. From a
>>stability point of view they buildings are far superior, I really miss
>>our house we had there. But I never figured out why they even put rebar
>>into the slab.
>
> Rebar is placed in slabs to prevent cracking which can occur due to
> uneven settling.  Slabs should be poured at a minimum with 8 gauge
> wire mesh, but many contractors believe a 12" x 12" mesh of 1/2" rebar
> is stronger.

I was looking at Europe, mostly Germany. There we had roughly 6" mesh of
1/2" in ceilings. Then they often threw a "rebar mat" on top of that
after the first cement truck pour. These mats are 1" squares.

When I saw them handling those rusty mats with their bare hands I began
to understand the importance of tetanus vaccinations ;-)

Regards, Joerg

http://www.analogconsultants.com