Building Code of Australia (Residential Buildings) 2011
Governance
Development Authority: Commonwealth Government - Australian Building Codes Board
Implementation Authority: State Government - Minister for Planning. Department for Planning, Transport and Infrastructure
Verification Authority: Local Government and the private sector
Enforcement Authority: Local Government
Prescriptive Compliance path
Model
Floor area in relation to a room, means the area of the room measured within the finished surfaces of the walls, incl. areas occupied by built in furniture, fixtures and fittings
Energy Requirements:
Insulation
Class 2
R-Values (m2.K/W) Floor Suspended floor Walls
Climate zone 1 0 1 3.3
Climate zone 2 0 1 3.3
Climate zone 3 0 0 3.3
Climate zone 4 0 0 2.8
Climate zone 5 0 1 2.8
Climate zone 6 0 1 2.8
Climate zone 7 1 1.5 2.8
Climate zone 8 2 2.5 3.8
Class 1
R-Values (m2.K/W) Suspended floor Walls
Climate zone 1 1.5 2.8
Climate zone 2 1 2.8
Climate zone 3 1.5 2.8
Climate zone 4 2.25 2.8
Climate zone 5 1 2.8
Climate zone 6 2.25 2.8
Climate zone 7 2.75 2.8
Climate zone 8 3.25 3.8
Windows
The aggregate air-conditioning energy value attributable to the glazing must be calculated using the method and criteria specified in tables J2.4a &b
Skylights
Total area < 5% of floor area, unless required by health and safety compliance requirements. SHGC and U factors are specified by ratio of shaft index to percentage of floor space. Listed in Table J1.4
Air Leakage
1.5 ACH
Space Heating System
Single occupancy (class 1): Heating and cooling loads for model and reference buildings must be calculated by the specified method and criteria (Vol.2 V2.6.2.2) Multi-occupancy (class 2): Annual energy consumption for air conditioning must be calculated with the specified method and criteria (Vol.1 Tables 2a-2g).
Water Heating System
Greenhouse gas intensity of water heaters must be <100g CO2-e/MJ of the thermal energy load.
Lighting
Multi-occupancy (class 2): Maximum illumination power density is prescribed by space type (Table J6.2a) with adjustments for control devices (Table J6.2b)
Renewable Energy
Heating for domestic services must obtained from an on-site renewable energy source, or reclaimed energy , or a source that has a greenhouse gas intensity <100g CO2J
Compliance Softwares:
All software must comply with the Protocol for House Energy Rating Software 2006.1 (Vol.2) or Building Energy Analysis Software 2006.1 (Vol. 1)
End-uses considered:
Auxiliary devices, Space cooling, Space heating, Water heating, Lighting interior, Ventilation
Resources
Notes
Climate zones
HDD: Heating Degree Days
Max. temp: Average January maximum temperature
Water Vapour Pressure: Average 3pm January Water Vapour Pressure
HDD Max. temp Water Vapour Pressure
Climate zone 1 - ‰¥ 30 °C ‰¥2.1kPa
Climate zone 2 - <30 °C ‰¥2.1kPa
Climate zone 3 - ‰¥ 30 °C ‰¤2.1kPa
Climate zone 4 - ‰¥ 30 °C ‰¤2.1kPa