Steel reinforcement details in the existing frame includes:

Minimum column size for 3 storey building. The size of column 9” x 9” inches are to be use in 1 or 2. Web we would like to show you a description here but the site won’t allow us. Web the footing width and thickness of a foundation is determined by the type of soil, depth of foundation, load requirements and driving cost.

Just because you can fit it,. Web the size of column should not be less than 9” x 9” inches; Web minimum size of rectangular column:

(a) light confinement reinforcement in the columns; (b) the beam bottom longitudinal reinforcement is. Web what is the minimum size of column for 3 storey building?

Minimum bar diameter is taken as 12mm. And for one storey building concrete mix will be m15 [1:2:4]. Web as per thumb rule, a 150uc or 6×6 size of steel column is ideal for 1 storey building, a 200uc or 8×8 size used for 2 and 3 storey, 250uc upto 5 storey, 300uc upto 8.