5200SQFT construction of 3 story (15600 SQFT) building, GF 2300SQFT is for Car parking, Do we need the Plinth beam (12" * 18" ) to Connect all the Columns in the car parking as well ? Since there is no Wall but only PCC flooring.
That means The steel will have 240mmx240mm if we using 30mm cover.Then For Class M20 Concrete The mix is 1:2:4 and Not 1:1.5:3 as opposed thats for Class 25 Concrete
My house was built by may neighbor carpeter ang its 3 storey . The colum size is 20 by 30 with 6 16 steel bar. The column distance is 3m and 2.25 meters on the other side.. sir is it okay..?