Question: what is the standard size of column for 2 storey house?
Answer: The thumb rules are for general designing in very small projects. For this general thumb rule, we will assume a structure of G+1 floors high, using standard 6″ walls. Minimum size of an RCC column should not be less than 9” x 12” (225mm x 300mm) with 4 bars of 12 MM Fe415 Steel.