AS NZS 3500 2 2 1996 amdt 1 1999 national plumbing and drain

1999 Page 11 Clause 2.4.12 New Add the following new clause: 2.4.12 High density polyethylene HDPE The following limitations shall apply to the use of high density polyethylene pipes and

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AS/NZS 3500.2.2-1996/Amdt 1-1999 National Plumbing and Drainage - Sanitary

plumbing and drainage-Acceptable solutions

Licensed to LUU MINH LUAN on 26 Feb 2002

STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND

Amendment No 1

to AS/NZS 3500.2.2 — 1996 National Plumbing and Drainage Part 2.2: Sanitary plumbing and drainage — Acceptable solutions

REVISED TEXT

The 1996 edition of AS/NZS 3500.2.2 is amended as follows; the amendments should be inserted in the appropriate places.

SUMMARY : This Amendment applies to Clauses 1.3.1, 2.4.12, 2.4.13, 3.4.3, 3.10.3, 4.6.7.8, 4.6.8.1, 4.6.8.2,

4.7.1, 4.8.2, 4.9.1, 4.9.4, 5.4.2, 5.4.3, 6.2, 6.3.4.1, 6.4.2.1(d), 6.4.2.2, 7.5.2, 9.4.3, 9.13.10, 11.25.2, 11.27.4, Figures 3.5, 4.3, 4.6, 6.1, 6.2, 6.5, and Appendices A and C.

Published on 5 August 1999.

Approved for publication in New Zealand on behalf of the Standards Council of New Zealand.

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No 1

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1999

Page 8 Clause 1.3.1

Delete ‘procedure’ and replace with ‘solution’.

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1999

Page 11 Clause 2.4.12 (New)

Add the following new clause:

2.4.12 High density polyethylene (HDPE) The following limitations shall apply to the use of high density polyethylene pipes and fittings:

(a) For installation purposes — (i) the jointing of pipes and fittings, handling and general installation

requirements shall be in accordance with AS 2033 (or NZS/AS 2033) and the manufacturers’ instructions;

(ii) when passing through concrete footings, pipes and fittings shall be wrapped

with an impermeable flexible sheath of not less than 6 mm thick or as specified by a structural engineer; and

(iii) when fully encased in concrete structures, subject to the approval of a

structural engineer, pipes and fittings shall be installed in accordance with the manufacturers installation instructions (see Clause 9.4.3)

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1999

Page 11 Clause 2.4.13 (New)

Add the following new clause:

2.4.13 Stainless steel pipes and fittings The following limitations shall apply to the use of stainless steel pipes and fittings:

(a) Austenitic stainless steel pipes and fittings shall be Type 304, 304L, 316 or 316L complying with ASTM A240/A240M

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1999

Page 16 Clause 3.4.3

First line, delete 20°’ and replace with ‘20%’.

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1999

Page 22 Clause 3.10.3

Delete existing clause and replace with the following:

3.10.3 Maximum length The maximum combined length of an unvented branch drain and fixture discharge pipe (see Figure 3.5) shall be as follows:

(a) 10 m from the vented drain to the weir of the fixture trap, provided that where the discharge pipe size is smaller than the unvented drain size, the maximum length of discharge pipe shall not exceed —

(i) 2 m, for water closet pans with DN80 outlets;

(ii) 1.5 m, for basins and bidets fitted with ‘s’ traps; and (iii) 2.5 m, for all other fixtures

(b) 10 m to the weir of a disconnector gully, or sullage dump point located in a caravan park

(c) The unvented branch drain and fixture discharge pipe shall be installed in accordance with Clauses 3.10.4, 3.10.5 and Figure 3.5

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1999

Page 25 Figure 3.5

Delete ‘vanted’ and replace with ‘vented’.

Add ‘1.5 max.’ to vertical length only to ‘P-trap basin’.

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1999

Page 41 Clause 4.6.7.8

Last line, delete ‘8.5 m’ and replace with ‘10 m’.

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1999

Page 42 Clause 4.6.8.1

Add new Item (d), as follows:

(d) A lockshield (shrouded) hose tap installed in the same room, and with a graded floor

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1999

Page 42 Clause 4.6.8.2

Delete existing clause and replace with the following:

4.6.8.2 Installation The charge pipe shall be in the size range of DN6 to DN15

(a) Charge pipes from flushing devices, tap sets or hot water relief valve drains shall not exceed 10 m in length

(b) Charge pipes from mechanical priming devices shall be installed in accordance with the manufacturer’s installation instructions

NOTE: The charge pipe to the floor gully should be installed so as not to impede access for maintenance

4.7.1 Location 4.7.1.1 General The location of inspection openings in drains shall be in accordance with Clauses 4.7.1.2 and 4.7.1.3

4.7.1.2 Australian requirements Except where inspection chambers are provided, inspection openings for maintenance purposes (see Figure 4.4) shall be provided — (a) as close as practicable outside the building on each branch connecting one or more water closets or slop hoppers but not greater than 2.5 m;

(b) at each end of the straight section of a main drain and at intervals of not more than

30 m

(c) at the connection to the regulating authority’s sewer, if not provided by the authority;

(d) on the downstream end where any drain passes under a building except where waste fixtures only are connected;

(e) where any new section of drain is connected to an existing drain; and (f) immediately at or upstream of the upper bend of a jump-up

4.7.1.3 New Zealand requirements Inspection openings or other means of access for maintenance shall be provided in accordance with NZBC G13/AS2

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1999

Page 42 Clause 4.8.2

Add to the end of Clause 4.8.2 ‘or in New Zealand, with those given in NZBC G13/A52.’

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1999

Page 43 Figure 4.3

Item (a), delete ‘8.5 m’ and replace with 10.0 m.

Item (b), delete ‘DN6’.

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1999

Page 46 Clause 4.9.1

Item (d), delete ‘pipes’ and replace with ‘drains’.

Add new Items (e), and (f), as follows:

(e) Where an equal junction is used to make the connection of a branch drain the same size as the main drain, the entry level of the branch drain may be on grade

(f) Junctions installed in the vertical plane shall not be used for the connection of stacks

Add new Clause 4.9.4 as follows:

4.9.4 Junctions installed in vertical plane Sweep and oblique junctions are permitted

to be laid in the vertical plane for the connection of a single discharge pipe or a drain, provided the vertical riser does not exceed 2 m in height, above the invert of the main drain, and in accordance with the following:

(a) Branch drains connected off the vertical riser shall be independently supported (b) Where a vertical riser is to be extended to ground level and/or the distance between the invert of the main drain and the invert of the branch drain exceeds 1 m, concrete shall be used as follows:

(i) For sweep junctions beneath the lower half of each junction to a minimum

thickness of 100 mm

(ii) For oblique junctions beneath the junction to a minimum thickness of

100 mm and continued up vertically to the underside of the bend fitted ot the junction fitting

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1999

Page 49 Figure 4.6

Delete Figure 4.6 and replace with new Figure 4.6.

1999

No 1

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1999

Page 51 Clause 5.4.2

Delete Item (a) and replace with the following:

(a) Crushed rock or gravel screenings of nominal sizes 7–10 mm

Add new Item (d), as follows:

(d) Sand shall be free running, capable of passing through a 2 mm mesh sieve, and shall not contain clay, organic or any other deleterious materials

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1999

Page 51 Clause 5.4.3

Delete existing clause and replace with the following:

5.4.3 Pipe side support and overlay materials Pipe sidesupport and pipe overlay material shall not be inferior to pipe bedding material

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1999

Page 53 Clause 6.2

Second paragraph, second last line, delete ‘Table 6.1’ and replace with ‘Appendix C’.

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1999

Page 55 Clause 6.3.4.1

Item (b) delete ‘(domestic only)’.

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1999

Page 55 Clause 6.4.2.1(d)

Delete Item (d) and replace with the following:

(d) The invert level of the trap or floor waste gully weir shall be a minimum of 10 mm higher than the soffit of the graded discharge pipe to which it connects (see Figure 6.2)

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1999

Page 56 Figure 6.1

Delete ‘1.0 max.’ and replace with ‘1.2 m max.’

Delete ‘Same type of waste fixture’ and replace with ‘Combination of waste fixtures.’

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1999

Page 56 Figure 6.2

Add to dimension ‘10 mm min.’

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1999

Page 57 Clause 6.4.2.2

First line, add after ‘connected’, ‘to comply with Clause 6.4.2.1(d),’.

Second last line, after the word ‘grade’, delete the rest of the sentence.

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1999

Page 62 Figure 6.5

For the left-hand drawing:

Delete ‘more’ and replace with ‘less’.

Delete Clause 6.6.1(a) and replace with Clause 6.6.1(b).

7.5.2 Topmost fixture connected to the stack Where the topmost discharge pipe connected to the stack exceeds 6 m for combination pan rooms sinks (DN 100), slop hoppers (DN 100), water closet pans (DN 100) and 2.5 m for all other fixtures, a trap vent shall be connected in accordance with the requirement of Clauses 7.5.1(a) and (b)

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1999

Page 111 Clause 9.4.3

Delete existing clause and replace with the following:

9.4.3 Structural concrete or brickwork Piping shall not be installed in any structural concrete slab, beam, column, concrete wall or load-bearing brickwork, unless approved

by a structural engineer

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1999

Page 115 Clause 9.13.10 (New)

Add the following new clause:

9.13.10 HDPE joints HDPE joints shall be installed in accordance with manufacturers’ instructions

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1999

Page 125 Clause 11.25.2

Delete the first sentence of clause and replace with the following:

11.25.2 Wall-hung Wall-hung urinals other than those with an integral trap shall be connected to a trap no smaller than DN40 or DN32 for New Zealand only

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1999

Page 127 Clause 11.27.4

Delete existing clause and replace with the following:

11.27.4 Termination of discharge pipe The outlet from an untrapped floor drain shall terminate —

(a) where it cannot cause damage or be a nuisance; and either (b) internally over a tundish connected to a floor waste gully, in accordance with Table 4.4; or

(c) externally with a flap and within 100 mm above ground level

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1999

Page 130 Appendix A

Under AS, add the following:

2033 Installation of polyethylene pipe systems

Under AS, delete the following:

1260 Unplasticized PVC (UPVC) pipe and fittings for sewerage applications

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1999

Page 131 Appendix A

Under AS/NZS, add the following:

1260 PVC pipes and fittings for drain waste and vent applications

Under NZS/AS, add the following:

2033 Installation of polyethylene pipe systems

Under NZBC add the following:

G13/AS2 Foul water, Acceptable solution

Under ASTM add the following:

A240/A240M Heat-resisting chromium and chromium-nickel stainless steel plate, sheet

and strip for pressure vessels

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1999

Page 133 Appendix C

1 Fourth row BATH, DN40 trap and waste, third column, delete ‘3.5’ and replace with

‘6.0’

Fourth row BATH, DN50 trap and waste (NZ only), third column, add ‘3.5’.

2 Sixth row BIDETTE/BIDET, third column, add ‘Australia only’ DN32/40 trap and waste, third column, delete ‘NP’ and replace with ‘3.5’.

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1999

Page 135 Appendix C

First row URINALS (slab), DN100 grate and DN65 trap and waste, Columns 6, 7 and 8,

delete ‘2.5’, and replace with ‘6.0’.

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1999

Page 136 Appendix C

First row WATER CLOSET PAN

Add under DN100 outlet,‘DN 80 outlet’, and, in Columns 2, 3, 4, 6, 7 and 8 the values

‘NP’, ‘NP’, ‘10.0’, ‘2.5’, ‘2.5’ and ‘2.5’

‘DN 80 outlet (NZ only) and in Columns 2, 3, 4, 6, 7 and 8 the values ‘NP’, ‘NP’, ‘2.0’,

‘2.0’, ‘2.0’, and ‘2.0’