NCC 2019 Volume Three
Search the National Construction Code editions
Classification
Building class 1a Building class 1b Building class 2 Building class 3 Building class 4 Building class 5 Building class 6 Building class 7a Building class 7b Building class 8 Building class 9a Building class 9b Building class 9c Building class 10a Building class 10b Building class 10c

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Classification
Building class 1a Building class 1b Building class 2 Building class 3 Building class 4 Building class 5 Building class 6 Building class 7a Building class 7b Building class 8 Building class 9a Building class 9b Building class 9c Building class 10a Building class 10b Building class 10c
Schedule 2 Abbreviations and symbols

Schedule 2 Abbreviations and symbols

Abbreviations and symbols used in the NCC include:

Abbreviations

Abbreviation

Definition

ABCB

Australian Building Codes Board

AC

Alternating Current

AS

Australian Standard

ASET

Available Safe Egress Time

ASTM

American Society for Testing and Materials

BCA

Building Code of Australia

BE

Fire blocks evacuation route

CCT

Correlated Colour Temperature

CF

Challenging fire

CHF

Critical Heat Flux

CRF

Critical Radiant Flux

CRI

Colour Rendering Index

CS

Fire starts in a concealed space

CSHGC

Constant for solar heat gain

CSIRO

Commonwealth Scientific and Industrial Research Organisation

CU

Constant for conductance

DC

Direct Current

FED

Fractional Effective Dose

FI

Fire brigade intervention

FRL

Fire Resistance Level

GRP

Glass fibre reinforced polyester

HRR

Heat Release Rate

HS

Horizontal fire spread

IS

Rapid fire spread involving internal surface linings

ISO

International Organisation for Standardisation

LED

Light-Emitting Diode

MEPS

Minimum Energy Performance Standards

NABERS

National Australian Built Environment Rating System

NATA

National Association of Testing Authorities

NatHERS

Nationwide House Energy Rating Scheme

NCC

National Construction Code

PBDB

Performance-based design brief

PCA

Plumbing Code of Australia

PMV

Predicted Mean Vote

ppm

Parts per million

PVC

Polyvinyl chloride

RC

Robustness check

RSET

Required Safe Egress Time

Rw

Weighted sound reduction index

SF

Smouldering fire

SHGC

Solar Heat Gain Coefficient

SS

Structural stability and other property

STC

Sound Transmission Class

UF

Unexpected catastrophic failure

UPVC

Unplasticized polyvinyl chloride

UT

Fire in normally unoccupied room threatening occupants of other rooms

U-Value

Thermal transmittance

VS

Vertical fire spread involving external cladding or external openings

Symbols

° degree(s)
°C degree(s) Celsius
°CDB degree(s) Celsius Dry Bulb
°CWB degree(s) Celsius Wet Bulb
-e/MJ equivalent per megajoule(s)
μm micrometre
dB(A) decibels “A” scale weighting network
J Joule(s)
J/kg.K Joules per kilogram degree Kelvin
J/s.m2 Joules per second square metre
K Kelvin(s)
kg kilogram(s)
kg/m kilogram(s) per metre
kg/m2 kilogram(s) per square metre
kg/m3 kilogram(s) per cubic metre
kJ/m2.hour kilojoules per square metre hour
km kilometre
kPa kilopascal(s)
kW/m2 kilowatt(s) per square metre
kWheating kilowatt(s) of heating
kWr kilowatt(s) of refrigeration
L litre(s)
L/min litre(s) per minute
L/s litre(s) per second
L/s.m2 litre(s) per second square metre
Lumens/W Lumens per Watt
lx lux
m metre(s)
m/s metre(s) per second
m2 square metre(s)
m2.K/W square metre Kelvin(s) per Watt
m3 cubic metre(s)
m3/hour cubic metre(s) per hour
m3/s cubic metre(s) per second
mcd/m2 millicandelas per square metre
min minute(s)
MJ/hour Megajoules per hour
MJ/m2.annum megajoule(s) per square metre per annum
mm millimetre(s)
mm2 square millimetre(s)
MW megawatt(s)
N newton(s)
Pa pascal(s)
Pa/m pascal(s) per metre
s second(s)
V Volt(s)
W Watt(s)
Winput power Watts of input power
Wr/Winput power Watts of thermal refrigeration per watt of input power
W/kWrej Watts per kilowatt of heat rejected
W/m.K Watts per metre degree Kelvin
W/m2 Watts per square metre
°south degree south
% percent
> greater than
< less than
≤ less than or equal to
≥ equal to or more than