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cross sections of beams

cross sections of beams

cross sections of beams

(OP)
Just wanted to ask some one which cross sectional shape is better (more rigid) an I or T shaped one or a closed hollow shape?

RE: cross sections of beams

For what type of loading?

RE: cross sections of beams

If you are considering bending then obviously an I or box will have more material at the top and bottom and hence a greater moment of inertia. You need to do your own homework if you are going to understand the topic.
brian

RE: cross sections of beams

A closed section (tube) would be more rigid when considering bending through different axis.  A T or I are specifically designed for rigidity in only one axis.  This is one reason that you often see tubular columns which can resist bending from any direction and generally see T or I sections in beams where the loading is generally in the vertical direction.

RE: cross sections of beams

(OP)
Thanks a lot (by the way its for uniaxial point loading)

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