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’.

Slab is one of the most famous part of a construction project. Its made of concrete.

When a rectangular slab is supported on all the sides and the length-to-breadth ratio is less than two, it is considered to be a two-way slab. The slab spans in both the orthogonal direction.

A circular slab is a two-way slab. In general, a slab which is not falling in the category of one-way slab, is considered to be a two-way slab.

Rectangular two-way slabs can be divided into the following types.

1) Flat plates: These slabs do not have beams between the columns, drop panels or column capitals. There may be spandrel beams at the edges.

2) Flat slabs: These slabs do not have beams but have drop panels or column capitals.

This brief will provide guidance to architects and structural engineers during the concept phase of the design for selecting a suitable flooring system.

**Download Two way Slab Design Excel Sheet Template for free. **