"NSM" wrote in message news:Zgpxd.4117$nN6.1232@edtnps84...

"Jim Adney" wrote in message
...

| You're right, of course, but what I meant, was that a tube is a single
| piece, hence solid even though hollow. The preceeding discussion was
| of a "tube" made up of a bunch of separate strips.
|
| I don't think there are any race cars out there which use chassis made
| of tubes which consist of a bunch of separate strips. I think you'd
| agree that this would be a structural waste of effort.

The edge connections would inevitably be weak points. Didn't Titanic pop
many of her joints when she hit the berg?



IIRC the steel itself fractured, it had a high sulphur content and was
especially brittle in the frigid water.