</font><font color="blue" class="small">( Sonnotube (sp) Burke Tube, ect.... is basically a round (HEAVY) cardboard "tube" of a specified diameter, used as a concrete for (in construction) to form round concrete pillars, or simular "structures". They are available at most construction/concrete product vendors. They are typically put together in a spiral manner, so that they can be "stripped" once the concrete is cured. )</font>
Okay, thanks Indy. I had heard of a Burke Tube, but wouldn't have remembered what it was without a reminder!
John