One way slab is designed exactly as a rectangular beam, the only difference are following:
The width of the beam is assumed as one metre.
The depth of slab can be assumed on the basis of control of deflection, Using balanced percentage of steel the [l/d] ratios are modified. To start with the span to depth ratios are approximated as following for initial depth trial calculations.
(1) For simply supported slabs 25 to 30
(2) For cantilever slabs 10
In addition to the main tensile reinforcement provided along shorter span, transverse reinforcement or distribution reinforcement is provided.
Some of the main bars in a slab are bent up near the supports [l/7 from centre of the support].
Shear is to be checked only. No shear reinforcement is provided.