Beam and Load: Understanding Uniformly Distributed Loads and Moments

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SUMMARY

The discussion centers on the principles of bending moments and uniformly distributed loads in beams, specifically addressing the formula for calculating the moment at the center of a beam, given by w * l / 8. Participants assert that the bending moment is independent of the beam's thickness, as it is determined solely by the applied load and its distribution. The conversation also clarifies the distinction between moment and bending, emphasizing that while the moment is a measure of the load's effect, bending is the resultant deformation of the beam.

PREREQUISITES
  • Understanding of basic structural engineering concepts
  • Familiarity with bending moment and shear force diagrams
  • Knowledge of material properties, including yield stress and section modulus
  • Proficiency in using formulas related to beam loading and moments
NEXT STEPS
  • Study the derivation of bending moment formulas for various beam configurations
  • Learn about the effects of different cross-sectional shapes on bending stress
  • Explore the principles of static equilibrium in structural analysis
  • Investigate advanced topics in beam theory, such as Euler-Bernoulli beam theory
USEFUL FOR

Structural engineers, civil engineering students, and professionals involved in the design and analysis of beam structures will benefit from this discussion.

  • #61
dahoa said:
a uniform beam is one with identical rebars ratio and resistances in the whole length of the beam?
Yes.
 
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  • #62
haruspex said:
Yes.

By the way.. when the ends are moment connected.. for example, the column and beam can transfer moments to each other.. so the moment in the column is equal to the moment in the beam at edge connections and rotation occurs at the joint... do you consider it fixed?

Some use definition of fixed where there is no moment rotation. If the above is not fixed.. then what kind of real or actual connections would make it fixed? How can you make column-beam fixed with no moment rotations?

And when we described pinned.. do you mean something that is just put on top of the support?
 

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