Problem No$.(1)$

For the shown beams $($a$)($b$)$ and $($c$),$ use moment distribution method to determine

$(1)$ Determine the moment at supports A and B of beam $($a$)$

$(2)$ Determine the moment at supports B and C of beam $($b$)$

$(3)$ Determine the moment at support B of beam $($c$)$

$(4)$ Draw S$.$F$.$D and B$.$M$.$D for beam $($a$)$ and $($b$)$

Note: $A$ is fixed. $B$ and $C$ are rollers

$($a$)$

Note: A and D are pin. B and C are rollers

$($b$)$