Interactive Sample Project: Pedestrian Bridge

Step 3: Analysis: Free Body Diagrams

  • Pick the corresponding free body diagram of the load on the beam with the correct forces and/or moment resultants.

Valuable Information
w = 8.854 lb/in
L = 96 in
the beam is simply supported

This choice is incorrect while the reaction forces are the same, the internal forces are not.

This choice is incorrect because the beam is simply supported so there should be no moment.

This is the correct choice for the simply supported beam.

This choice is incorrect because equilibrium is not satisfied.

Compute the shear and moment

< < Back to Analysis: Live Load Continue to Step4: Analysis: Shear Diagrams >>
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This material is based upon work supported by the National Science Foundation under Grant No. 0633602. Any opinions, findings and conclusions or recomendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation (NSF).

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