Pratt vs. Howe boxcar trusses

Denny Anspach <danspach@...>

Although I seem to know that in bridge engineering a Pratt truss is inherently lighter than a Howe, and thus in practice, the Howe is relatively rare, how does this play out in boxcar design? Does the engineering of the door openings, or the weight and strength of the underframe have something to do with it?

Denny S. Anspach, MD
Okoboji, Iowa

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