[Herby Sailor]

Where can I find a chart that will show how much a steel I beam will deflect under a given load? I am building a 5 ton crane and need to size the beam that holds the hoist. Minimum size is 5 inch flange, maximum is 6 inch and the vertical dimension can be 10 or 12 inch. It is to be 48 feet long, supported on both ends.

[smokedetector]

There's no chart. There's deflection formulas. Look up the formula and solve for the required moment of inertia, and then look up the chart with I beam moment of inertias. That is the only thing I know of in a chart.