[Antennas] RE:Re-bar "Cage" To Use For Your Tower
Wendell Wyly W5FL
[email protected]
2002年9月10日 21:12:35 -0500
Rebar would hardly be called high tensile steel. With a brazed joint using
gas or a low penetration rod for arc welding the effect on the strength of
the rebar would be minimal for normal amateur tower bases and ground
anchors. The steel does absolutely nothing except on the face that you are
putting in tension and using a minimum 5/8 rebar, it doesn't take much steel
to keep the concrete from breaking under tension. Tying a joint is only to
hold it together until you get the concrete poured and is not an acceptable
joint if you are depending on it for a Ufer ground.
I sure wish that I had welded the rebar in my concrete slab house foundation
together and used it for a huge (5500 sq ft) ground mat. Almost none of the
3/8 steel under a house is structural or heavily loaded EXCEPT the steel in
the beams which is normally 5/8 or better.
-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Karl Kanalz
Sent: Monday, September 09, 2002 5:19 PM
To: 'Jacqui'; Lyn Williams
Cc: [email protected]
Subject: [Antennas] RE:Re-bar "Cage" To Use For Your Tower
>From my observation, Jacqui, and talking to varius concrete/re-bar experts
in the area, it is not a good idea to "weld" re-bar when constructing a
cage for a foundation or tower base (also a foundation).