Hong Kong Regulations

BUILDING (STANDARDS OF SANITARY FITMENTS, PLUMBING, DRAINAGE WORKS AND LATRINES) REGULATIONS - REGULATION 55

Manholes and cleaning eyes to be provided

(1) Manholes shall be provided-

   (a)  at every change in direction in any drain or sewer except where-

        (i)    the change in direction does not exceed 45 degrees;

        (ii)   the internal radius of the bend is not less than 6 times the
               internal diameter of the drain or sewer; and

        (iii)  the change in direction is made by means of a purpose-made
               pipe; and

   (b)  at changes of gradient, if the Building Authority so requires.

(2) Manholes or cleaning eyes shall be provided at intervals not exceeding 60
m in every drain and sewer. (L.N. 294 of 1976)