Shear Force in an I-beam question

[ridiculoid]

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

 

[haruspex]

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?

 

[ridiculoid]

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.