Tải bản đầy đủ
AS/NZS 3500.0:1995 NATIONAL PLUMBING AND DRAINAGE CODE - GLOSSARY OF TERMS

AS/NZS 3500.0:1995 NATIONAL PLUMBING AND DRAINAGE CODE - GLOSSARY OF TERMS

Tải bản đầy đủ

AS/NZS 3500.0:1995
This Joint Australian/New Zealand Standard was prepared by Joint Technical
Committee WS/14, National Plumbing and Drainage Code. It was approved on behalf
of the Council of Standards Australia on 18 August 1995 and on behalf of the Council
of Standards New Zealand on 3 August 1995. It was published on 5 December 1995.

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

The following interests are represented on Committee WS/14:
A.C.T. Electricity and Water
Association of Hydraulic Services Consultants, Australia
AUSTAP
Australian Chamber of Commerce and Industry
Australian Plumbing and Mechanical Contractors Association
Brisbane City Council
Department of Environment and Planning, Tas.
Department of Housing Local Government Planning, Qld
Department of Land and Water Conservation, N.S.W.
Department of Lands Housing and Local Government, N.T.
Electricity Supply Association of Australia
Gas Appliance Manufactures Association of Australia
Housing Industry Association (Australia)
Melbourne Water
Metal Trades Industry Association of Australia
New Zealand Manufacturers Federation
New Zealand Society of Mater Plumbers and Gasfitters
Plastics and Chemicals Industry Association (Australia)
Solar Energy Industries Association of Australia
South Australian Water Corporation
Sydney Water Corporation
Water Authority of Western Australia

Review of Standards. To keep abreast of progress in industry, Joint Australian/New
Zealand Standards are subject to periodic review and are kept up to date by the issue
of amendments or new editions as necessary. It is important therefore that Standards
users ensure that they are in possession of the latest edition, and any amendments
thereto.
Full details of all Joint Standards and related publications will be found in the
Standards Australia and Standards New Zealand Catalogue of Publications; this
information is supplemented each month by the magazines ‘The Australian Standard’
and ‘Standards New Zealand’, which subscribing members receive, and which give
details of new publications, new editions and amendments, and of withdrawn
Standards.
Suggestions for improvements to Joint Standards, addressed to the head office of either
Standards Australia or Standards New Zealand, are welcomed. Notification of any
inaccuracy or ambiguity found in a Joint Australian/New Zealand Standard should be
made without delay in order that the matter may be investigated and appropriate action
taken.

This Standard was issued in draft form for comment as DR 94176.

AS/NZS 3500.0:1995

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

Australian/New Zealand Standard
National Plumbing and Drainage
Code
Part 0: Glossary of terms

PUBLISHED JOINTLY BY:
STANDARDS AUSTRALIA
1 The Crescent,
Homebush NSW 2140 Australia
STANDARDS NEW ZEALAND
Level 10, Standards House,
155 The Terrace,
Wellington 6001 New Zealand
ISBN 0 7262 0070 5

AS / NZS 3500.0:1995

2

PREFACE
This Standard was prepared by the Joint Standards Australia/Standards New Zealand
Committee WS/14 on the National Plumbing and Drainage Code, to supersede
AS 3500.0 — 1990, National Plumbing and Drainage Code, Part 0: Glossary of terms.

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

The Standard is primarily intended for the general water industry and for use in the
interpretation of terminology used in the various parts of the National Plumbing and
Drainage Code and covers water supply from the reticulation main into the premises,
including hot water service systems, sanitary fixtures, drainage and their associated water
and waste fittings, pipe systems and associated components.

Originated as AS 1355 — 1979.
Previous editi on AS 3500.0 — 1990.
Jointl y revised and designated AS/NZS 3500.0:1995.

 Copyright STANDARDS AUSTRALIA/ STANDARDS NEW ZEALAND
Users of Standards are reminded that copyright subsists in all Standards Australia and Standards New Zealand publications and software.
Except where the Copyright Act allows and except where provided for below no publications or software produced by
Standards Australia or Standards New Zealand may be reproduced, stored in a retrieval system in any form or transmitted by any means
without prior permission in writing from Standards Australia or Standards New Zealand. Permission may be conditional on an appropriate
royalty payment. Australian requests for permission and information on commercial software royalties should be directed to the head
office of Standards Australia. New Zealand requests should be directed to Standards New Zealand.
Up to 10 percent of the technical content pages of a Standard may be copied for use exclusively in-house by purchasers of the
Standard without payment of a royalty or advice to Standards Australia or Standards New Zealand.
Inclusion of copyright material in computer software programs is also permitted without royalty payment provided such programs
are used exclusively in-house by the creators of the programs.
Care should be taken to ensure that material used is from the current edition of the Standard and that it is updated whenever the Standard
is amended or revised. The number and date of the Standard should therefore be clearly identified.
The use of material in print form or in computer software programs to be used commercially, with or without payment, or in commercial
contracts is subject to the payment of a royalty. This policy may be varied by Standards Australia or Standards New Zealand at any time.

3

AS / NZS 3500.0:1995

STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND
Australian/New Zealand Standard
National Plumbing and Drainage Code

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

Part 0: Glossary of terms
Term

Definition

ablution trough

See trough.

absorber

See solar water heater—terms.

absorption pit

A pit, trench or well dug into permeable ground, filled with broken
stone, bricks or large granular material and usually covered with
earth, where liquid may soak away into the ground. Also called
soakaway.

absorption test

See test.

access chamber

See chamber.

access cover

See cover.

access fitting

See fitting.

access opening

An opening in a building element, fitted with a cover which is
removable to allow maintenance of a concealed pipe, fixture or
other apparatus.

access pipe

See pipe.

access point

A place where access may be made to a drain for inspection,
cleaning or maintenance; and may include an inspection point,
rodding point, inspection chamber or access chamber.

accessible

Capable of being reached for the purposes of inspection,
maintenance, repair, or replacement, but may first require removal
of an access panel, cover, door or similar obstruction.

adaptor fitting

See fitting.

aeration systems

Systems designed to treat liquid waste by the processes of air
injection.

aerator

A device to introduce air into the flow of a liquid as part of a
treatment process.

COPYRIGHT

AS / NZS 3500.0:1995

Term

Definition

aerobic

A state where molecular oxygen is present.

aerobic treatment systems

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

4

See aeration systems.

against-pitch installation

See solar water heater—terms.

air chamber

See chamber.

air cooling equipment

See cooling equipment.

air eliminator

A device which opens to release accumulated air from a hydraulic
system and which automatically closes in the presence of a liquid.

air gap

(a)

Sanitary plumbing system The unobstructed vertical distance
through the free atmosphere between the outlet of a discharge
or waste pipe and the overflow level of the receptacle into
which it is discharging.

(b)

Water supply system The unobstructed vertical distance
through the free atmosphere between the lowest opening of a
water service pipe or fixed outlet supplying water to a fixture
or receptacle and the highest possible water level of such
fixture or receptacle.

air test

See test.

air valve

See valve.

air venting

Allowing air to enter or escape from a confined space to facilitate
movement.

air vessel

A vessel which utilizes the compressibility of contained air to
promote a more uniform flow of water.

air/water pressure vessel

A vessel in which water is stored under pressure of compressed air.
The vessel forms part of a pumped water supply system. Variations
in the amount of water stored are accompanied by variations in the
pressure of the air and can be used to control the stopping and
starting of the pumps.

airlift

A method of raising liquid by the injection of compressed air.

airlift pump
airlock

anaerobic

See pump.
(a)

An air space with doors separating a water closet or urinal
apartment and an adjacent room.

(b)

Air in a pipe which stops the flow of liquid in a pumping or
gravity circuit.

A state where free oxygen is absent.
COPYRIGHT

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

5

AS / NZS 3500.0:1995

Term

Definition

anchor blocks

Blocks, usually of concrete, placed at intervals and at changes of
direction along a pipeline to prevent pipe movement. Sometimes
referred to as thrust blocks.

anchorage

Means of preventing movement of pipes or fittings subject to
unbalanced forces.

angle of fitting

See fitting.

angle of inclination

See solar water heater—terms.

anode

The negative electrode of a galvanic couple which corrodes
preferentially to the positive electrode (cathode).

appliance

An apparatus or piece of equipment designed to perform a normal
everyday task.

aqueduct

Any water supply channel vested in, belonging to, or under the
control of the responsible authority.

arrestor

An apparatus designed to intercept and retain silt, sand, oil, grease,
sludge or other substance that is a prohibited discharge to the
sewerage or drainage system.

atmospheric vacuum breaker

See backflow prevention device.

authority

See regulatory authority.

authorized

Applies to materials, products, fixtures, appliances and apparatus
which are sanctioned for use in the area of jurisdiction of the
authorizing authority.

autoclave

See sterilizer.

autogenous welded joint

See joint.

automatic cistern

See flushing cistern.

automatic flush tank

See tank.

autopsy table

A fixture upon which post-mortem examinations are performed and
which has provision for drainage to the sanitary plumbing system.

auxiliary water heater

See water heater.

average recurrence interval

Rainfall intensity for stormwater design purposes.

back fall

See fall.

back-siphonage

Backflow that occurs when the water supply pressure falls below
atmospheric pressure.
COPYRIGHT

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

AS / NZS 3500.0:1995

6

Term

Definition

backfill

See fill.

backflow

(a)

Flow in a direction contrary to the normal or intended
direction of flow; or

(b)

the unintended flow of water from a potentially polluted
source into a potable water supply.

backflow condition

Any arrangement whereby backflow may occur.

backflow prevention device

A device to prevent the reverse flow of water from a potentially
polluted source into a potable water supply system.

atmospheric vacuum
breaker

A device to prevent backflow caused by back siphonage, which
incorporates a ventilation valve, which operates automatically to
admit air into the downstream chamber of the valve whenever the
pressure in the chamber reduces to or falls below atmospheric
pressure.

double check valve

A device to prevent backflow caused by backpressure, and which
has two independently operating force loaded non-return valves and
incorporates specific test points for in-service testing.

dual check valve

A device to prevent backflow caused by backpressure, which
incorporates two independently operating force loaded non-return
valves.

dual check valve with
atmospheric port

A device to prevent backflow caused by back-siphonage or
backpressure, which incorporates a ventilation port and two
independently operating force loaded non-return valves which
prevent backpressure when operative, and which automatically
admits air to the chamber between the non-return valves, when the
upstream non-return valve becomes inoperative.

hose connection vacuum
breaker

A device fitted to a hose-tap to prevent backflow in a water
reticulation system caused by either back-siphonage or backpressure,
which operates automatically to admit air into the system under
back-siphonage conditions and vents the system to atmosphere
under backpressure conditions.

pressure type vacuum
breaker

A device to
incorporates
automatically
whenever the

reduced pressure zone
device

A device to prevent backflow caused by either back-siphonage or
backpressure in a water reticulation system, which incorporates two
independently operating force loaded non-return valves and which
automatically drains to waste, whenever the pressure in the system
between the upstream and downstream non-return valves reduces to
a pressure not less than 14 kPa below the pressure at the inlet to the
upstream non-return valve.

prevent backflow caused by back-siphonage, which
a force loaded ventilation valve, which operates
to admit air into the downstream chamber of the valve
pressure in the chamber reduces to 7 kPa.

COPYRIGHT

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

7

AS / NZS 3500.0:1995

Term

Definition

backnut

A thin threaded nut, which can be dished on one face to retain a
seal, used to form a watertight joint on a longscrew or similar
component, i.e. tapware.

backpressure

The difference between the pressure within any water service and a
higher pressure within any vessel or pipework to which it is
connected.

bain marie

A device for heating water in which food containers are placed to
keep the contents warm.

ball joint

See joint.

ball valve

See valve.

band clamped sleeve joint

See joint.

bar chair

A unit for supporting steel reinforcement while pouring concrete.

bar sink
barrel (of pipe)

barrel nipple

See sink.
The longitudinal section of pipe which does not include the jointing
portion.
See nipple.

barrel union

A fitting for connecting together and disconnecting two pipes.

basement

The floor space of a building which is substantially or wholly below
the level of the adjoining ground surface.

basin

A fixture for holding water for ablutionary purposes which may be
designed for mounting in a corner, mounted on a floor supported
pedestal, attached to a wall by means of brackets and screws, or set
in a vanity top.

bath

A fixture for containing water, in which the human body may be
immersed for ablutionary or treatment purposes.

eye (wash)

A bath consisting of a small bowl with jets of water controlled by a
hand or foot-operated valve.

foot bath

A bath fixed at a low level for washing or soaking feet.

shower bath

A bath combined with a shower outlet.

spa bath

A bath with the facility for injecting air and jets of turbulent water
into water contained in the bath.

batter

The slope of the sides of an excavation or soil fixture (i.e. urinal).
COPYRIGHT

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

AS / NZS 3500.0:1995

8

Term

Definition

bearing capacity (of soil)

The safe load per unit area which the soil can carry.

bedding

Material placed beneath a pipe to provide support for the pipeline.

bedpan macerator

A fixture to macerate paper-mache single-use receptacles and their
contents in a sanitary manner. It incorporates an internal flushing
and sanitizing cycle after every usage.

bedpan washer

A sanitary fixture in which bedpans and urine bottles may be
emptied or cleansed. It incorporates a flushing apparatus and may be
a sanitizer.

belled end joint

See joint.

bench

The floor area of a chamber graded to the channel.

bend

A short length of pipe or a manufactured fitting used to make a
change in direction in pipework.

inspection opening bend

A sanitary drainage bend which incorporates an inspection opening.

long bend

A pipe bend having a centreline radius of curvature equal to or
greater than 3 times its internal diameter.

pan bend

A soil pipe bend terminating in a socket to receive the spigot of a
sanitary fixture, e.g. WC pan.

reducing bend

A fitting in the form of a bend in which the internal diameter is
reduced.

return bend

A pipe used in making a change of direction of 180 degrees.

short bend

A pipe bend having a radius at the centreline equal to or less than
its internal diameter.

spring bend

A pipe or fitting used in making a change in direction of less than
90 degrees.

bib tap

See tap.

bidet

A sanitary fixture equipped with a douche device for producing a jet
of water, from a point below the rim of the pan, which can be
applied to the body.

bidette

A sanitary fixture equipped with a douche but with over rim type
water outlets, providing an airgap.

blank flange

See flange.

blue metal

Crushed graded quarry stone which does not disintegrate over time.

COPYRIGHT

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

9

AS / NZS 3500.0:1995

Term

Definition

boiler

See water heater.

boiling water unit

An apparatus for providing a continuous supply of boiling water.

bolted gland joint

See joint.

boss

A connection on a vessel, pipe or fitting, provided to facilitate the
connection of a pipe or fitting.

pipe boss

A short length of pipe with one or more bosses.

screwed boss

A fitting for attachment to the plate of a vessel, having an external
or internal thread for the connection of a pipe, pipe fitting, valve,
tap, immersion heater or other accessory.

bottle trap

See trap.

boundary trap

See trap.

boundary trap riser

A vertical shaft which extends the inlet leg of a boundary trap to
ground surface level to provide access to the drain for inspection,
cleaning and maintenance purposes. The riser may be sealed with an
airtight cap or terminate as a ground vent.

bracket

A projecting support for a shelf, pipe or other part.

branch drain

See drain.

branch pipe

See pipe.

branch vent

See vent.

brazed joint

See joint.

brazing

The process of joining metals in which a molten non-ferrous filler
metal is drawn by capillary action into the space between closely
adjacent surfaces of the parts to be joined. The melting point of the
filler metal is normally above 500°C but always below the melting
temperature of the metals being joined.

brazing alloy

A non-ferrous alloy, applied in the molten state, for joining together
metal components by brazing.

break pressure tank

See tank.

break tank

See tank.

bronze welded joint

See joint.

bucket pump

See pump.

COPYRIGHT

Licensed to LUU MINH LUAN on 25 Feb 2002. Single user licence only. Storage, distribution or use on network prohibited.

AS / NZS 3500.0:1995

10

Term

Definition

built-in sink

See sink.

butterfly valve

See valve.

bylaws

Regulations made by local and other authorities under relevant
legislation.

bypass

An alternative path for diverting the flow of liquid around instead of
through a fitting or apparatus.

calorifier

An apparatus for indirect heating of water in a vessel, the source of
heat being a separate coil of heated pipes immersed in the water.

cap and lining

A fitting being a sleeve, one end of which is suitable for connection
to another fitting or component and the other end having a
shouldered end and loose coupling nut to connect to a threaded
fitting.

capacity (of vessel)

The maximum volume capable of being contained in a vessel.

capacity (of cistern)

The volume calculated by measuring up to the marked water level.

capacity (of electric storage
water heater)

In Australia the rated hot water delivery, in litres, at the specified
temperature. In New Zealand the cylinder capacity in litres.

capacity (of heat exchange
water heater)

The heat storage volume in litres.

capacity (of other storage
water heater)

The nominal storage capacity in litres.

capacity (of storage tank)

The volume of water above the invent of the outlet pipe when the
water surface in the tank is 20 mm below the overflow level.

capacity (of pumps)

The rated flowrate measured against a specified head.

capillary fitting

See fitting.

capillary joint

See joint.

cast

A general term for products at or near finished shape formed by
solidification of a molten metal or alloy in a mould.

cathodic protection

A method of protecting a metal against corrosion by lowering the
potential of the metal surface by means of an impressed current or
by connection to a sacrificial anode.

caulked joint

See joint.

COPYRIGHT