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Shear and Bending Moment Diagrams (continued)

Use Method 1 to calculate the shear and bending moment along the beam

Approach:

Pass sections along the beam where distributed loads, concentrated loads and/or concentrated moments occur in order to calculate the shear and

bending moment in each section by summing forces and summing moments about the end point of the section. Recall the sign convention:

The positive sign convention for a beam element is as follows:

Here’s an example showing sections at each place where loading changes along the

axis of the beam. In this example you need to pass four sections.