[TowerTalk] FW: More crank-up questions

[Matt]

>> Recent, commercial rebar cages ordered with the towers have come through
welded instead of tied.

>> I have the wire, but it's a whale of a lot easier to weld it.  If it's
good enough for the manufacturer, then it's good enough for me.

Be aware that normal grade rebar should not be welded - the heat destroys
its strength.   There is a separate grade of rebar available for welding.
That said, in a crank-up tower application the foundation serves as ballast,
so is not much tensile stress developed in the concrete - except in the
vicinity of the anchor bolt embedment.

Matt
KM5VI