Slab Classification and Types: One-Way & Two-Way Slab Design Guide

Slab Classification and Types: One-Way & Two-Way Slab Design Guide, It is a structural member at which one dimension is very small as compared to the other two dimensions and is primarily subjected to bending.

Slab can be classified on the basis of the following

1. On the basis of shape
   • Rectangular
   • Circular
   • Triangular
   • Any other shape
2. Based on bending behaviour.
   • One-way slab
   • Two-way slab
3. On the basis of the type of construction
   • Slab / solid slab
   • Flat slab
   • Slab with opening
   • Waffle slab
4. On the basis of the type of loading
   • Subjected to a point load.
   • Subjected to UDL.

NOTE: Analysis and design of solid rectangular one way and two way slabs subjected to udl will be considered.

1. One-way Slab: If bending in one direction is very significant compared to other orthogonal directions, then the slab is termed as one-way slab.

A) Rectangular slab supported from the opposite edge

NOTE: Rectangular slab supported from opposite edge is always one way, irrespective of dimension.

B). Rectangular slab supported from all four edge.

A rectangular slab supported from all four sides is considered a one way slab if the aspect ratio is more than 2.

is

NOTE: Aspect ratio is valid only for a rectangular slab supported from all 4 sides.

2. Two-way slab
   If bending is comparable in two orthogonal directions, then such slabs are called a two-way slab.

Slab Classification and Types: One-Way & Two-Way Slab Design Guide