31 JULY
THE NEW ZEALAND GAZETTE
3197

Reinforced
35
Unreinforced (Humatic)
30
Plastic:
Buried pipes to be bedded in and
surrounded with suitable granular material
and buried at sufficient depth to give adequate
surface protection against loading.
PVC underground drain to NZS 7649
25
PVC Waste and Ventilating to NZS 7641
25
PVC Soil and Ventilating to NZS 7642
25
High Density polythene
20
Steel:
Suitably protected internally and externally
against corrosion
Arc butt welded to NZS 2226P
35
Pipes:
(Water Supply) non-aggressive water and
soil conditions.
Asbestos Cement:
Pressure pipes to NZS 285
35
Cast Iron, spun to NZS 628
35
Plastic:
Buried plastic pipes to be bedded in and
surrounded with suitable granular material
and at sufficient depth to give adequate
protection against surface loading.
PVC cold water supply to NZS 7648 and
installed to NZS 7643
35
Polythene for cold water services to NZS
1338
25
Steel:
Suitably protected internally and externally
against corrosion
Arc butt welded to NZS 2226P
35
Galvanised steel tubing
35
Copper
As for pipe in
which installed
Fire hydrants
As for pipe in
which installed
Valves (metallic)
35
Dams
Reinforced or prestressed concrete
35
Lined excavation with synthetic rubber,
rubber lining and roof
10
Timber Stave
15
Steel tanks and water towers
25
Meters—all sizes
15
Structures:
Reinforced concrete
35
Steel (including pressure vessels)
25
Brick and concrete masonry
35
Timber (Softwoods, e.g. Pinus and
Indigenous Timbers)
Exposed to Marine Conditions
15
Treated, used Externally and Painted
25
Treated, used Internally Painted or
Unpainted
30
Timber (Imported Hardwoods)
30
Swimming baths; reinforced concrete
construction in accordance with NZS 4441
35
Treatment equipment for water supply and
swimming pools
15
Pumping plant, motors and controls
15
Structures:
Reinforced concrete (to NZS 1900, Chap 9.3
and adequate cover over steel)
35
In contact with sewage sludge or gas
35
Masonry
35
Mechanical and Electrical Equipment:
For sewage treatment plants and pumping
stations
15
Plastic media for trickling filters
10
Wells:
Bored and lined
30
Dug, brick or concrete lined
35
Roading:
Road paving (Bituminous)
20
Road paving (concrete)
35
Culverts (concrete)
25
Bridges (reinforced concrete)
35
Bridges (steel)
25
Bridges (timber hardwood)
25
Electrical Undertakings:
Pipelines
30
Generating Plant
25
Main Transmission Lines (Ironbark,
Concrete or Galvanised Steel Poles)
25

Primary Distribution Lines
25
Secondary Distribution Lines
20
Main Substation—Indoor
20
Main Substation—Outdoor
15
Distribution Substations—Indoor
20
Distribution Substations—Outdoor
15
Public Lighting
15
Special Stand-by Plant
10
Meters, Instruments, Furniture and
Equipment
20
Transformers
15
Turbines—Steam
25
Turbines—Water
30

SCHEDULE II

Maximum Term (Years)
Annual Sinking
Fund Contribution
3
29.21
4
20.47
5
15.28
6
9.46
7
7.70
8
5.30
9
4.46
10
3.78
11
3.22
12
2.76
13
2.38
14
1.77
15
1.54
16
1.34
17
1.17
18
1.02
19
0.89
20
0.78
21
0.68
22
0.59
23
0.52
24
0.46
25
0.40
26
0.35
27
0.31
28
29
30

Dated at Wellington this 25th day of July 1986.

G. C. SCOTT, Chairman.

Local Authorities Loans Board.

The Standards Act 1965—Standard Specification Revoked

PURSUANT to section 23 of the Standards Act 1965, the Standards
Council, on 30 May 1986, revoked the under-mentioned standard
specification.

Number and Title of Specification
NZS 4452:1974 Construction of underground pipe sewers and drains.
(Cancelled and replaced by the new edition NZS 4452:1986)

Dated at Wellington this 25th day of July 1986.

DENYS R. M. PINFOLD.
Director, Standards Association of New Zealand.

(S.A. 114/2/7: 1958)

The Standards Act 1965—Specifications Declared to be Standard
Specifications

PURSUANT to section 23 of the Standards Act 1965, the Standards
Council, on 30 May 1986, declared the under-mentioned
specifications to be standard specifications.

Number and Title of Specification
Price of Copy
(Post free)
$
NZS 4452:1986 Code of practice for the
construction of underground pipe sewers and
drains. (New edition incorporating
Amendments No. 1 and No. 2)
22.00