30) What is the weight of plain cement concrete in Kg/m³?

31) What is the recommended super imposed material load in Kg/m² for residential and hospital buildings?

32) What is the recommended super imposed load in Kg/m² for work house and book stalls?

33) What is the weight of steel in Kg/m³?

34) What is the recommended super imposed load in Kg/m² for heavy Workshop and factories?