NCC 2016 Volume Two
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Part 2.4 Health and Amenity (Verification Methods)

Part 2.4 Health and Amenity (Verification Methods)

VERIFICATION METHODS

V2.4.5 Verification of suitable indoor air quality

For a Class 1 building, compliance with P2.4.5(a) and P2.4.5(b)(i) 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 V2.4.5.

Table V2.4.5 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 90 ppm
30 minutes 50 ppm
1 hour 25 ppm
8 hours 10 ppm
Formaldehyde, CH2O 30 minutes 0.1 mg/m3
Nitrogen dioxide, NO2 1 year 40 μg/m3 (0.0197 ppm)Note 2
1 hour 200 μg/m3 (0.0987 ppm)
Ozone, O3 8 hour, daily maximum 100 μg/m3 (0.0473 ppm)
Particulate matter, PM
PM2.5 1 year 10 μg/m3
24 hour (99th percentile) 25 μg/m3
PM10 1 year 20 μg/m3
24 hour (99th percentile) 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)).

V2.4.6 Sound insulation

Compliance with P2.4.6(a) and (c) to insulate against transmission of airborne sound through walls separating dwellings is verified when it is measured that the wall has a weighted standardised level difference with spectrum adaptation term (DnT,w + Ctr) not less than 45 when determined under AS/NZS 1276.1 or ISO 717.1.

STATE AND TERRITORY VARIATIONS

STATE AND TERRITORY VARIATIONS

V2.4.6 does not apply in Northern Territory.

STATE AND TERRITORY VARIATIONS