A single concrete frame layout and cross secon is shown in Figure $1$ and Figure $2$ respecvely

to be analysed with the Portal, Canlever and Moment Distribuon Methods. a$.$ Explain the

differences of the three methods $($Portal$,$ Canlever and Moment Distribuon$)$ and state which

method would be considered more accurate. b$.$ Use the Portal and Canlever methods to

analyse the frame on gridline $2$ with a lateral load of $120KN$ as shown in Figure $2$ to

determine the approximate axial, shear forces for all members and the reacon forces $($axial$,$

shear and moment$)$ at the fixed supports $($A$,$ B$,$ C$).$

c$.$ Use the moment distribuon method to analyse the frame on gridline $2$ with a lateral

load of $120KN$ as shown in Figure $2$ to determine the shear forces and joint moments. d$.$

Use the results from the moment distribuon method to draw the bending moment

diagram.

Note that all members are assumed to have the same cross$-$seconal area and ignore their

self$-$weight.