Shear Force in an I-beam question

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SUMMARY

The discussion focuses on calculating the maximum shear force in an I-beam subjected to a point load of 15kN. Participants clarify that the maximum shear force is not simply the point load but rather the value derived from the shear force diagram. The relevant equations include the moment of inertia (I = d . b^3 / 12) and the shear force calculation (tmax = (F / I . b) . (A1 . y1) + (A2 . y2)). Understanding the distinction between applied load and shear force is crucial for accurate calculations.

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  • Knowledge of basic mechanics of materials
  • Proficiency in using equations for shear force and moment calculations
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ridiculoid
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Homework Statement


[/B]
problem - https://imgur.com/34yTyCA

Homework Equations



I = d . b^3 / 12
tmax = (F / I . b) . (A1 . y1) + (A2 . y2)

The Attempt at a Solution



It is asking for the maximum shear FORCE in the beam. Do I take the maximum value from the shear force diagram as shown in my working? or is the maximum shear force the 15kN at the point Load?

Any help would be greatly appreciated.

Shear force in I beam working - https://imgur.com/UCAexj6
 
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ridiculoid said:
is the maximum shear force the 15kN at the point Load?
The load is not the shear force. What is the shear force where the load is applied?
 
haruspex said:
The load is not the shear force. What is the shear force where the load is applied?

Ahh that makes sense! Thank you for the help.
 

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