How do you calculate point of contraflexure? - Answers

The point of contraflexure in a beam is where the bending moment changes sign, indicating a shift from positive to negative bending moments or vice versa. To calculate it, you first need to determine the bending moment diagram for the beam under the given loads. The points of contraflexure occur where the bending moment is zero; you can find these points by solving the bending moment equation derived from the beam's loading conditions and boundary conditions. Set the bending moment equation equal to zero and solve for the position along the beam.