The specified design strength of the concrete, is 25 MPa () and the specified yield strength of the reinforcement, fy , is 400 MPa. The unit weight of reinforced concrete is assumed to be 24 kN/m3.
Effective depth d= Span /((L/d)Basic x modification factor) For obtaining modification factor, the percentage of steel for slab can be assumed from 0.2 to 0.5%. … Detailing Requirements of RCC Slab as per IS456: 2000.
Slabs are generally designed on the assumption that they consists of a number of beams of breadth ‘one meter’.