As per NCC 2016 D2.13 (Page 183) following requirements have to be met for public and private stairs
Public Stair ways, Riser – Max 190, Min 115 Going Max 355 Min 250 Quantity (2R+G) – Max 700 Min 550
Private Stairways Riser – Max 190, Min 115 Going Max 355 Min 240 Quantity (2R+G) – Max 700 Min 550
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