Multiple Choice

$20$ points

The timber beam $AB$ of span $6$ ft and nominal width $4$ in $($actual width $=3\mathrm{.}5in)$ is to supvort three concentrated loads $($free body diagram is shown$).$ Determine the forces indicated by aa and bb and from the sketched shear force $($SF$)$ and bending moment $($BM$)$ diagram from the free body diagram shown.

Determine also the values of items cc$,$ dd$,$ Re$.$ fi$,$ gg$.$ hh$.$ and ii$.$ Select the right group of answers from the listed groups $($I to IV$).$ Please, note the maximum SF and BM because you will need them to answer another question.

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