Draw the moment diagram for member 𝐴𝐵 of the frame. Follow the standard sign convention for the positive internal loadings in the member shown in the figure below.

Click on “add vertical line off” to add discontinuity lines. Then click on “add segment” button to add functions between the lines.

Note 1 – Make sure you place only one vertical line at places that require a vertical line. If you inadvertently place 2 vertical lines at the same place, it will appear correct visually because the lines overlap, but the system will mark it wrong.

Note 2 – Be sure to indicate the correct types of the functions between the lines, e.g. in your answer the type of a function is “linear increasing slope” for the function that actually has linear decreasing slope, the answer will be graded as incorrect. Use the button “change segment” if necessary.

Note 3 – You should not draw an “extra” vertical line at the point where the shear curve passes the 𝑥-axis.

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