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Cantilever RC Beam / Transfer Beam / Offset Column

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RFreund

Structural
Aug 14, 2010
1,885
I am wondering what the best way to design a short cantilever beam where the overhang cantilever is less than the depth of the beam. My current situation applies to a cantilevered grade beam picking up a column above.

If I design for the centerline shear and moment I need a lot of shear reinforcement which for some reason doesn't seem right or necessary. Any suggestions on how to approach this situation? It seems like there should be a Strut and Tie method that would work but I don't do much strut and tie stuff.

See attached for a quick sketch.

Thanks!

EIT
www.HowToEngineer.com
 
 http://files.engineering.com/getfile.aspx?folder=8452780b-4b90-481c-9c92-9ba0e4ec4f0b&file=RC_Beam_Cantilever_Design.pdf
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My latest copy says the same, so you either do non-linear FEM or STM. I would think STM is much easier.

But you still need to develop the steel past the anchor point (see R11.7.1).

Also for RFreund, ACI says that the shear should be less than or equal to 10*sqrt(f'c)b.w*d . It does not say that is the shear capacity! (11.7.3)
 
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