Section 34 in Haryana Urban Development Authority (Erection of Buildings) Regulations, 1979
34. Minimum dimension of steps.
(a)No stair in a residential building shall have a rise of more than 0.20 metre and a tread of less than 0.25 metres.(b)No stair in a commercial, public or industrial building shall have a rise of more than 0.18 and a tread of less than 0.27 metres.(c)Notwithstanding anything contained in sub-rules (a) and (b) above, stair cases in private portions of public buildings or warehouses and industrial building not open to the general public may be of the sizes and materials mentioned in rule 34.
