Section 3(1)(c) in Tamil Nadu Urban Local Bodies (Provision Of Special Facilities For The Differently Abled Persons In The Multi-Storeyed and Public Buildings) Rules, 2013
(c)A 90 centimetres high hand rail and an additional hand rail at a height of 75 centimetres above the finished level of the steps for stair cases and for steps to the ground floor plinth, even if they are enclosed on their sides by walls;