Designing is not a something like consist of 2 or 3 parameters in it, for designing of any member all data is required including future expansions to which owner might be looking for.
Some noobs design without thinking about everything and later make clients panic and do ad hoc solutions like, use light weight blocks on above floor, make top floor roof with tin sheets as structure cant take load etc. (i have seen such buildings).
If you are not designer or even do not understand basic, dont risk the life of others.
Designing goes from top to bottom by calculating all loads.
If you wish to construct a single column of 9" height, you not even required a design.
You can make it in brick or you can make it in concrete without reinforcement.
Or you can make it in clay and later on burn it with fire, you can have a column of big size red brick lol
From your question it look like, your designing somebodies home and you did not understand what to do, that's why you asked question by splitting it and restricting information to particular element at single instance which is a cruel method and lead to dangerous situations.
Best Answer to you question might be
You wont required reinforcement as the column height is only 9' and you can construct that column with following materials
- wood
- concrete
- clay
- stone column
- flyash brick column
- you can use any type of material to build that column.