ATM Definition of a truss.

[Dale Eason <atmpob@yahoo.com>]

There as been some misunderstanding on the list about
what is or is not a truss.  Several telescope designs
with parallel poles have been called trusses.  They
are not.  I'm not a structural engineer so I'm not
sure what they are called.  I think there are
cantilever beams.

Anyway the definition of the truss can be found here:
http://www.freeessays.cc/db/5/avk32.shtml

The defining element is that trusses have a triangular
element.  And that some members are in compression or
tension.  The parallel implementations create more
shear than tension or compression I think.

Dale Eason

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