Problem $(1)$:

Given: Design a spirally reinforced circular column. The service loads on this column include a $170$ kips dead load and $140$ kips live load. To be consistent with the size of bars used in the other part of this structure, you have to use bar No$.9$ as main bar. Use $fc=4,000,fy=60,000.$

Sketch your final design. Include the details of reinforcement $($spiral size, pitch, cover, bar size and number, & section size$).$

The column is a short column with small eccentricity. $(35$ points$)$