Given a continuous beam in Figure $1$ below. Do the following.

$1\mathrm{.}1.$ Select one stiffness method and calculate the moments at joints $A,B,$ and $C.$

Please note the beam members have different stiffness $AB=41.BC-=21.$ and

$CD$

$1\mathrm{.}2.$ Using moments calculated in Ouestion $1.\%.$ Calculate the reactions at $A,B,$ and

C$.(5)$

$7$:$3.$ Draw the shear force and the bending moment diagram: $(6)$

Figure in Conhrwhous Beam