how do we use the beam selection tables for cantilevers 1

[tobman]

I'm having trouble interpreting what the method of analysis
is to determine which steel beam section size to use for a
cantilever problem. If I have a beam that is fixed at one
end, and has a point load at the other (let's say span of
the beam is 10 ft, and the point load is at the end of the
beam and is say 500 lbs.) The moment is then 5000 lb.ft and
the shear is 500 lbs. My question is this: Can we just
go to the beam selection tables and select a beam with this
info, and if so, what do you use for an unsupported length?
I was under the impression that the tables were just for
simply supported beam conditions with different unsupported
lengths. What would be an acceptable section to choose here
and why?

 

[SlideRuleEra]

tobman - Thanks to you too. I am currently teaching a continuing education PE review course to structural engineers preparing for the April 16 exam. Will be using the problems that you and I have worked on as examples of how to calculate & size beams for unbraced length.

The thought process and techniques that we have disscussed are how this kind of work was done BC (Before Computers). I believe this is the best way to get a true "feel" for engineering. Keep asking this type question.

Best Wishes