It is better if rebar members are totally contained in the concrete, to
eliminate paths where the natural alkilinity of the concrete may leach
out, particularly at the bottom of the assembly. That alkalinity
protects steel from corrosion (however, it attacks aluminum, so don't
put aluminum into concrete). In addition, the ends should be bent with
a 'rod buster' to improve their grip on the concrete. The principle
value of the rebar is to hold the concrete against tensile stresses.
73 de Red
Andrew Pfeiffer wrote:
>I become happy owner of TX455 crank up tower. I began planning the rebar
>cage.
>My questions is:
>Can vertical rebar members be driven let say 2 feet deep to the ground at
>the bottom of the hole or this is NO NO...
>
>Andy - VA3PL
>
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