Section 52(6)(c) in Tamil Nadu Combined Development and Building Rules, 2019
(c)Other requirements. - Every room to be used as kitchen shall have:(i)Unless separately provided in a pantry, means for the washing of kitchen utensils which shall lead directly are through a sink to a grated and trapped connection to the waste pipe;(ii)an impermeable floor;(iii)a flue, if found necessary; and(iv)a window or ventilator or opening.