Shear Diagram V. Calculating qy 0 hide text 6 generally the most time consuming part of determining the shear stress in a beam is calculating the value of qy o the first moment of area about the centroid for the area above. The goal of the beam analysis determine the shear force v and.
In doing so we will determine critical sections within the beam. Starting from the left the first force you come across is the 10 lb downward force at the left end. The green circle is a and the blue circle is b.
Plot the shear diagram starting from the left end.
Design checks hand calcs stress libraries. This is the first point of data draw a line from zero to negative 10. Location of zero moment at segment bc. Then label these diagrams with v for shear and m for moment and label the units for each.