7.4.2.3.

(1) Two or more fixture outlet pipes that serve outlets from a single fixture that is listed in Clause 7.4.2.1.(1)(d)v1 may be directly connected to a branch that,

(a) has a size of at least 1 ¼ in., and

(b) is terminated above the flood level rim of a directly connected fixture with a minimum diameter waste of 1 ½ in. to form an air break.

(2) Fixture drains from fixtures that are listed in Subclauses 7.4.2.1.(1)(d)(i)v1 and (ii) may be directly connected to a pipe that,

(a) is terminated to form an air break above the flood level rim of a fixture that is directly connected to a sanitary drainage system, and

(b) is extended through the roof when fixtures that are on 3 or more storeys are connected to it.

(3) Fixture drains from fixtures that are listed in Subclauses 7.4.2.1.(1)(d)(iii)v1 to (vi) may be directly connected to a pipe that,

(a) is terminated to form an air break above the flood level rim of a fixture that is directly connected to a storm drainage system, and

(b) is extended through the roof when fixtures that are on 3 or more storeys are connected to it.

(4) Every waste pipe carrying waste from a device for the display, storage, preparation or processing of food or drink, shall be trapped and have a minimum diameter equal to the diameter of the drain outlet from the device.