The floor plan and elevation below are for a residential $RC$ moment$-$resistant

building located in Door County, Wisconsin. Consider the following properties:

Compressive strength of concrete $($f$\text{'}$c$)$: $4000$ psi

Reinforcement steel yield strength $($fy$)$: $60$ksi

Unit weight of concrete: $150l\frac{b}{f}{t}^3$

Slab depth: $8$ inches

Determine the factored axial loads and bending moments for the top end of

column B$3$ on the second floor.

Design column $Cl$ on the first floor as a short column.

Determine the design axial load capacity for a spiral short column with a $24-$

inch diameter, $2\mathrm{.}5-$inch concrete cover to the steel center, and eight #$9$ steel

rebars.