NCC 2016 Volume Three
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Section C Sanitary Plumbing and Drainage Systems

Section C Sanitary Plumbing and Drainage Systems

Part C1 Sanitary Plumbing Systems

Delete C1.2(a) and insert SA C1.2(a) as follows:

SA C1.2 General requirements

(a)

The design, construction, installation, replacement, repair, alteration and maintenance of a sanitary plumbing system must be in accordance with either—

(i)

AS/NZS 3500.2 with the following variations and additions:

(A)

After clause 4.7.1(h) insert (i) as follows:

(i)

Inspection openings indicated in 4.7.1(b), (d) and (e) shall be raised to finished surface level. All other inspection openings need not be raised provided they are not below paved, concreted or similar finished surfaces.

(B)

Substitute clause 2.4.1(a) as follows:

(a)

Bends in pipes shall have a throat radius complying with Table 5.6 and Figure B6 of AS/NZS 1260 (2009) and shall be free from wrinkling and flattening.

(C)

Substitute clause 5.3(b), (c), (e) and (f) as follows:

(b)

under all inspection junctions to a minimum thickness of 100 mm and continued up vertically to the centre of the inspection junction fitting.

(c)

under all bends greater than DN 65 where a riser from the drain is brought to the finished surface level.

(e)

for sweep junctions, beneath the junction to a minimum thickness of 100 mm and continued up vertically to the centre of the junction fitting where the riser from the sweep junction fitting is brought to finished surface level.

(f)

for 45° junctions, beneath the junction to a minimum thickness of 100 mm and continued up vertically to the underside of the bend fitted to the junction fitting where the riser from the 45° junction is brought to finished surface level.

(D)

After clause 12.9 insert additional clause 12.10 as follows:

12.10

Identification of pumped discharge pipes and rising mains

(a)

Buried pumped discharge pipes and rising mains shall be placed in a sleeve or continually spirally wrapped. The sleeving or spiral wrapping shall be identified for the full length with the following statement: "sewer rising main" or "pumped discharge pipe" in accordance with AS 1345.

(b)

Above ground pumped discharge pipes and rising mains shall be identified in accordance with AS 1345. Identification tape (label) with the wording "sewer rising main" or "pumped discharge pipe" shall be installed in a visible position running longitudinally, and fastened to the pumped discharge pipe or rising main at not more than 3 m intervals.

(E)

After clause 13.9(b) delete the following:

Where a bath trap is not accessible, the bath shall discharge untrapped to a floor waste gully (FWG) in accordance with Table 4.6.7.2 and Appendix D.

(F)

After clause 13.27.2 insert additional clause 13.28 as follows:

13.28
Trade Waste Discharges

All trade waste pre-treatment devices shall connect to the sewerage system via a disconnector gully.

(ii)

AS/NZS 3500.5 with the following variations and additions:

(A)

After clause 4.21.1(h) insert (i) as follows:

(i)

Inspection openings indicated in 4.21.1(b), (d) and (e) shall be raised to finished surface level. All other inspection openings need not be raised provided they are not below paved, concreted or similar finished surfaces; and

(B)

Substitute clause 4.4.1(a) as follows:

(a)

Bends in pipes shall have a throat radius complying with AS/NZS 1260 (2009) Table 5.6 and Figure B6 and shall be free from wrinkling and flattening.

(C)

Substitute clause 4.29(b), (c), (e) and (f) as follows:

(b)

under all inspection junctions to a minimum thickness of 100 mm and continued up vertically to the centre of the inspection opening.

(c)

under all bends greater than DN 65 where a riser from the drain is brought to the finished surface level.

(e)

for sweep junctions, beneath the junction to a minimum thickness of 100 mm and continued up vertically to the centre of the junction fitting where the riser from the sweep junction fitting is brought to finished surface level.

(f)

for 45° junctions, beneath the junction to a minimum thickness of 100 mm and continued up vertically to the underside of the bend fitted to the junction fitting where the riser from the 45° junction is brought to finished surface level.

(D)

After clause 4.37.2.2(b) delete the sentence:

Where a bath trap is not accessible, the bath shall discharge, untrapped, to a floor waste gully (FWG), in accordance with Table 4.36.8.2 and Table 4.37.1.2.

(E)

After clause 4.39.4 insert additional clause 4.39.5 as follows:

4.39.5

Identification of pumped discharge pipes and rising mains

(a)

Buried pumped discharge pipes and rising mains shall be placed in a sleeve or continually spirally wrapped. The sleeving or spiral wrapping shall be identified for the full length with the following statement: "sewer rising main" or "pumped discharge pipe" in accordance with AS 1345.

(b)

Above ground pumped discharge pipes and rising mains shall be identified in accordance with AS 1345. Identification tape (label) with the wording "sewer rising main" or "pumped discharge pipe" shall be installed in a visible position running longitudinally, and fastened to the pumped discharge pipe or rising main at not more than 3 m intervals.