1. The problem statement, all variables and given/known data Finding the critical value of shear stress at the junction and at the neutral axis 2. Relevant equations stress max = (Bending moment x height from neutral axis)/Moment of inertia Shear stress = Shear force/area 3. The attempt at a solution I am able to do the first 2 parts but not the last one. I'm not really sure which of the 2 equations to use and what it meant by critical value.