NCC 2016 Volume One
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Part F4 Light and Ventilation (Verification Methods)

Part F4 Light and Ventilation (Verification Methods)

VERIFICATION METHODS

FV4.1 Verification of suitable indoor air quality

For a Class 2, 3, 5, 6, 9b or 9c building or Class 4 part of a building, compliance with and FP4.4(a) is verified when it is determined that the building under typical conditions in use is provided with sufficient ventilation with outdoor air such that contaminant levels do not exceed the limits specified in Table FV4.1.

Table FV4.1 MAXIMUM CONTAMINANT LIMITS FOR ACCEPTABLE INDOOR AIR QUALITY

Pollutant Averaging time Maximum air quality value
Carbon dioxide, CO2 8 hours 850 ppmNote 1
Carbon monoxide, CO

15 minutes

30 minutes

1 hour

8 hours

90 ppm

50 ppm

25 ppm

10 ppm
Formaldehyde, CH2O 30 minutes 0.1 mg/m3
Nitrogen dioxide, NO2

1 year

1 hour

40 μg/m3 (0.0197 ppm) Note 2

200 μg/m3 (0.0987 ppm)
Ozone, O3 8 hour, daily maximum 100 μg/m3 (0.0473 ppm)

Particulate matter, PM

PM2.5

PM10

1 year

24 hour (99th percentile)

1 year

24 hour (99th percentile)

10 μg/m3

25 μg/m3

20 μg/m3

50 μg/m3
Total volatile organic compounds 1 hour 500 μg/m3

Notes:

  1. Based on body odour metric (i.e. 450 ppm above ambient CO2 level of 400 ppm and demand control ventilation provisions in AS 1668.2).
  2. Based on pressure of 101.325 kPa and temperature of 25°C (i.e. the conversion is mg/m3 = ppm (molecular weight/24.4)).

is a means of verifying if a proposed ventilation system for a Class 2, 3, 4, 6, 9b or 9c building achieves the minimum level of ventilation required by and .

It is not compulsory for a designer to use . The designer has the choice of using:

  • to verify that the proposal achieves and ;
  • the Deemed-to-Satisfy Provisions of to and ; or
  • another means of verifying that and will be achieved.

If is used to verify compliance, it must be demonstrated that the building is sufficiently ventilated with outdoor air such that contaminant levels do not exceed the limits in .

FV4.2 Verification of suitable indoor air quality for carparks

For a Class 7a building, compliance with and FP4.4(a) is verified when it is determined that the building is provided with sufficient ventilation with outdoor air such that carbon monoxide exposure levels do not exceed the limits specified in Table FV4.2.

Table FV4.2 MAXIMUM CARBON MONOXIDE EXPOSURE FOR CARPARKS

Concentration, ppm Total exposure duration per day
100 Not to be exceeded
90 15 minutes
60 1 hour
30 8 hours
Note: Various government work, health and safety regulations specify workplace exposure limits for airborne contaminants in the workplace.

is a means of verifying if a proposed ventilation system for a Class 7a building achieves the minimum level of ventilation required by and .

It is not compulsory for a designer to use . The designer has the choice of using:

  • to verify that the proposal achieves and ;
  • the Deemed-to-Satisfy Provisions of ; or
  • another means of verifying that and will be achieved.

If is used to verify compliance, it must be demonstrated that the building is sufficiently ventilated with outdoor air such that carbon monoxide exposure levels do not exceed the limits in .