A single concrete frame layout and cross section is shown in Figure $1$ and Figure $2$ respectively

to be analysed with the Portal, Cantilever and Moment Distribution Methods.

b$.$ Use the Portal and Cantilever 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 reaction forces $($axial$,$ shear and moment$)$ at the fixed

supports $($A$,$ B$,$ C$).$

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

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

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

self$-$weight.