Hong Kong Regulations

BUILDING (STANDARDS OF SANITARY FITMENTS, PLUMBING, DRAINAGE WORKS AND LATRINES) REGULATIONS - REGULATION 51

Inlets to drains

(1) Subject to paragraph (2), every inlet to a drain or sewer shall be
properly trapped by an efficient trap, which shall be so formed and fixed as
to maintain a water seal of not less than 75 mm.

(2) Paragraph (1) shall not apply-

   (a)  to an inlet for a soil pipe or a ventilating pipe;

   (b)  to an inlet for the carriage of any trade effluent;

   (c)  where no other means of connexion is practicable; or

   (d)  to an inlet to a drain used solely for the conveyance of rain water
        from a roof. (L.N. 361 of 1980)