Question $1$: $(25$ points$)$

For the floor shown, if the ultimate load from the slab is $15k\frac{N}{m^2},$ It is required to do the following:

$($a$)(7$ points$)$ Calculate the total axial load on the column $Cl$ if the column supports $4$ floors.

$($b$)(7$ points$)$ Determine the dimensions of the column assuming that it supports approximately symmetrical arrangement of loads.

$($c$)7$ points$)$ Determine the longitudinal and transverse reinforcement.

$($d$)(4$ points$)$ Draw a cross section and show all reinforcement $($Scale $1$:$10)$