"Carl Ijames" wrote
The simple beams were within a factor of 2 or 3 of just enough, so
my gut says your truss will be plenty - I just can't back it up with
numbers without looking up some stuff. If I get a chance tomorrow
at work I'll try.

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Regards,
Carl Ijames

"Steve B" wrote in message
. ..

http://www.flickr.com/photos/deserttraveler/

Here's a pencil drawing. It is all 3 x 3. The house like frame
would give

Steve,

Based on Carl's previous numbers I would tend to agree that it should
be sufficient. I would personally move the angles out until they are
over the edges of the containers (opening up the 140 deg apex and
leaving the height about the same). This will deliver the load from
the center I beam to the containers directly instead of just
stiffening the middle of the cross bars. Leaving the "boat hooks" mid
span on your cross bars should not be a problem. I am sure you would
think of it, but I would also weld 4 stops to the cross bars so they
can not slide across the roofs of the containers.

--
Stephen B.
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