$5\mathrm{.}5.$ Figure $5\mathrm{.}18$ shows the part floor plan of an office building using a simple construction system. The floor is of pre$-$cast concrete slabs supported on steel beams. The loadings are given as follows:

a$)$ Dead load $=5\mathrm{.}0k\frac{N}{m^2}($including self weight of concrete slab, self weight of steel beams, partitions and ceilings$).$

b$)$ Imposed load $=4\mathrm{.}0k\frac{N}{m^2}$

c$)$ Self$-$weight of brick wall on external beams, AB and $AC=3\mathrm{.}0k\frac{N}{m^2}$

Reaction loads from beams AB and AC will be transferred to column $"$ A $"$ as shown in Figure$5\mathrm{.}18.$ Column $"$A$"$ at level $1$ and $2$ consists of $25425473$ UKC section of grade S$275$ steel.

Based on the given data:

i$.$ Determine the axial load and nominal moments of column $"$A$"$ at storey $1.$

ii$.$ Determine the classification of column $"$A$"$ at storey $1.$

iii. Determine the adequacy of $25425473$ UKC section.

Plan view

Side view

Figure $5\mathrm{.}18$

Please answer this question, thank you