According to code IS: 456-clause (23.2.1) The vertical deflection of limits: 1. Basic values of span to effective depth ratios for spans up to 10 m;
Beams
x (span to the effective depth ratio)
Cantilever
7
Simply Supported
20
Continuous
26
According to span/depth ratio, depth required of beam for same span and loading is Cantilever > Simply supported > Continuous 2. For span above 10 m, the value in (1) will be multiplied by 10/span in meters.