NCC 2016 Volume Two
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Part 3.12 Energy Efficiency
Appropriate :
Where an alternative energy efficiency design is proposed as a Performance Solution to that described in Part 3.12, that proposal must comply with—
STATE AND TERRITORY VARIATIONS
for the thermal performance of the building is satisfied by—
complying with—
, for reducing the heating or cooling loads; and
, for building fabric thermal insulation; and
and 3.12.1.4(b), for thermal breaks; and
, for compensating for a loss of ceiling insulation, other than where the house energy rating software used can automatically compensate for a loss of ceiling insulation; and
and 3.12.1.5(d), for floor edge insulation; and
, for building sealing; or
STATE AND TERRITORY VARIATION
3.12.0(a) is replaced in Victoria as follows:
for the thermal performance of the building is satisfied by—
complying with—
3.12.0.1, for reducing the heating or cooling loads; and
, for building fabric thermal insulation; and
3.12.1.2(c) and 3.12.1.4(b), for thermal breaks; and
3.12.1.2(e), for compensating for a loss of ceiling insulation; and
3.12.1.5(c) and 3.12.1.5(d), for floor edge insulation; and
Part 3.12.3, for building sealing; and
in the case of a new Class 1 building, having either a rainwater tank connected to all sanitary flushing systems, or a solar water heater system, installed in accordance with the Plumbing Regulations 2008; or
complying with—
Part 3.12.1, for the building fabric; and
Part 3.12.2, for the external glazing and shading; and
Part 3.12.3, for building sealing; and
Part 3.12.4, for air movement; and
in the case of a new Class 1 building, having either a rainwater tank connected to all sanitary flushing systems, or a solar water heater system, installed in accordance with the Plumbing Regulations 2008; or
for reducing greenhouse gas emissions is satisfied by complying with Part 3.12.5.
There are two options for complying with the energy efficiency Deemed-to-Satisfy Provisions 3.12.1 to 3.12.4:
Option 1 Energy Rating — 3.12.0(a)(i) to achieve the required energy rating and comply with (B) to (F) for energy-saving features such as the testing and installation of insulation, thermal breaks, compensation for downlights other than where the house energy rating software used can automatically compensate for a loss of ceiling insulation, floor edge insulation and detailed provisions for building sealing.
Option 2 Elemental Provisions — 3.12.0(a)(ii) to satisfy all the detailed provisions including meeting the Total R-Values of roofs, walls and floors, the glazing allowances and the air movement requirements. These detailed provisions also include the testing and installation of insulation, thermal breaks, compensation for downlights, floor edge insulation and detailed provisions for building sealing.
This is explained in the flow chart.
To reduce heating or cooling loads, a building must achieve an energy rating using house energy rating software, of not less than—
6 stars; or
for a building in climate zones 1 or 2, 5.5 stars if the building has an outdoor living area as described in (b) if the outdoor living area—
is fully covered with an impervious roof having a Total R-Value of at least 1.5 (for downward heat flow); or
has at least one permanently installed ceiling fan; or
for a building in climate zones 1 or 2, 5 stars if the building has an outdoor living area as described in (b) if the outdoor living area—
is fully covered with an impervious roof having a Total R-Value of at least 1.5 (for downward heat flow); and
has at least one permanently installed ceiling fan.
STATE AND TERRITORY VARIATION
In South Australia delete 3.12.0.1(a) and insert SA 3.12.0.1(a) as follows:
To reduce heating and cooling loads, a building must—
achieve an energy rating using house energy rating software of not less than 6 stars; or
for an elevated building with a lightweight flooring system that has a floor area not more than 60 m² – achieve an energy rating using house energy rating software of not less than 5 stars; or
for an elevated building with a lightweight flooring system located in areas listed in (b) – achieve an energy rating using house energy rating software of not less than 5 stars and comply with Minister's Specification SA 3.12.0.1(a).
The areas where the requirements of (iii) apply are—
climate zone 4; and
one of the following local government areas—
Ceduna Council
Cleve Council
The Coorong District Council
Elliston Council
Flinders Ranges Council
Franklin Harbour Council
Goyder Council
Kangaroo Island Council
Karoonda East Murray Council
Kimba Council
Lower Eyre Peninsula Council
Mid Murray Council
Mount Remarkable Council
Orroroo Carrieton Council
Peterborough Council
Southern Mallee Council
Streaky Bay Council
Tatiara Council
Tumby Bay Council
Wudinna Council; and
land not within a local government council area.
An outdoor living area in (a)(ii) and (a)(iii) is a space that—
is directly adjoining, and directly accessible from, a general purpose living area of a Class 1 building such as a lounge, kitchen, dining or family room, which is not a room for sleeping or specialist tasks such as a study or home theatre; and
has a floor area of not less than 12.0 m2; and
has length and width dimensions of not less than 2.5 m each; and
has an opening height above floor level of not less than 2.1 m; and
has one side permanently open with a second side either—
permanently open; or
readily openable.
The sides referred to in (b)(v) must be not less than 900 mm from an allotment boundary or 900 mm from an obstruction to the breeze path such as a building, fence or other structure.