National Steel Bridge Alliance

Design Resources

NSBA provides a number of resources to help engineers during the preliminary design phase.  These resources work from various levels of refinement toward the goal of generating economical steel solutions.  Most coarse are the Steel Span to Weight Curves which provide steel weights, in pounds per square foot of bridge deck, for various span arrangements.  The next level of refinement are the Continuous Span Standards.  The Standards include pertinent steel information, such as plate sizes, steel weights, and camber diagrams, for 3 span bridges.  Finally, NSBA's Simon analysis software, packaged in the Steel Bridge Design Suite, is the most refined resource and is a powerful tool for generating preliminary designs that meet project constraints.


Simon Analysis Software

Simon is a line girder analysis software that can be used to analyze straight and low skew plate girder and tub girder bridges.  Simon is perfect for those bridge projects that don't require a 3D finite model and where hand calculations would be too involved. (Continue)