AustraliaAustralia

National Construction Code (NCC) Commercial Buildings

The NCC is a national uniform Code that contains the minimum performance requirements for building and plumbing construction in Australia

Applicable Building Type(s)

New non-residential, New residential

Policy Requirement Level

Mandatory

Policy Sequence

Governance

Development Authority: Australian Building Codes Board

Implementation Authority: State and Territory Governments (and local governments)

Verification Authority: Registered Building Certifiers (private and public)

Enforcement Authority: State and Territory Governments (and local governments)

Prescriptive Compliance path

NCC Volume One (Section J) – Commercial Buildings

Energy Requirements:

Insulation

J1.2 Thermal construction — general

(a) Where required, insulation must comply with AS/NZS 4859.1 and be installed so that it—

(i)         abuts or overlaps adjoining insulation other than at supporting members such as studs, noggings, joists, furring channels and the like where the insulation must be against the member; and

(ii)         forms a continuous barrier with ceilings, walls, bulkheads, floors or the like that inherently contribute to the thermal barrier; and

(iii)        does not affect the safe or effective operation of a service or fitting.

(b) Where required, reflective insulation must be installed with—

(i)         the necessary airspace to achieve the required R-Value between a reflective side of the reflective insulation and a building lining or cladding; and

(ii)         the reflective insulation closely fitted against any penetration, door or window opening; and

(iii)        the reflective insulation adequately supported by framing members; and

(iv)        each adjoining sheet of roll membrane being—

(A)        overlapped not less than 50 mm; or

(B)        taped together.

(c) Where required, bulk insulation must be installed so that—

(i)         it maintains its position and thickness, other than where it is compressed between cladding and supporting members, water pipes, electrical cabling or the like; and

(ii)         in a ceiling, where there is no bulk insulation or reflective insulation in the wall beneath, it overlaps the wall by not less than 50 mm.

(d) Roof, ceiling, wall and floor materials, and associated surfaces are deemed to have the thermal properties listed in Specification J1.2.

Windows

J2.4 Glazing

(b) The aggregate air-conditioning energy value attributable to the glazing must not exceed the allowance obtained by multiplying the facade area that is exposed to the conditioned space for the orientation by the energy index in Table J2.4a.

 

Application Energy Index Option 1 2 3 4 5 6 7 8
Glazing in Class 3 building A 0.067 0.132 0.091 0.086 0.092 0.090 0.059 0.027
B 0.060 0.124 0.078 0.063 0.071 0.061 0.037 N/A

Glazing in Class 9c building
A 0.080 0.158 0.109 0.103 0.110 0.108 0.071 0.032
B 0.072 0.149 0.094 0.076 0.085 0.073 0.044 N/A
Display glazing in a shop or showroom

A 0.180 0.217 0.221 0.227 0.257 0.220 0.170 0.046
B 0.173 0.209 0.208 0.204 0.236 0.191 0.148 N/A

Glazing in Other
A 0.130 .0181 0.172 0.142 0.175 0.116 0.083 0.023
B 0.123 0.173 0.159 0.113 0.145 0.082 0.058 N/A

Note: Option A applies to all glazing other than where compliance B is required by Table J1.5a

 

Doors

Doors must be sealed.

Skylights

Skylights are considered as part of the glazing requirements shown in the windows section. 

Air Leakage

J3.4 Windows and doors

(a) A seal to restrict air infiltration must be fitted to each edge of a door, openable window or the like forming part of—

     (i)         the envelope of a conditioned space; or

     (ii)         the external fabric of a habitable room or public area in climate zones 4, 5, 6, 7 or 8.

(b) The requirements of (a) do not apply to—

     (i)         a window complying with AS 2047; or

     (ii)         a fire door or smoke door; or

     (iii)        a roller shutter door, roller shutter grille or other security door or device installed only for out-of-hours security.

(c) A seal required by (a)

     (i)         for the bottom edge of an external swing door, must be a draft protection device; and

     (ii)         for the other edges of an external door or the edges of an openable window or other such opening, may be a foam or rubber compression strip, fibrous seal or the like.

(d) An entrance to a building, if leading to a conditioned space must have an airlock, self-closing door, revolving door or the like

Water Heating System

B2.4 Water heater in a heated water supply system

In a new Class 1 or Class 10 building—

(a) a water heater in a heated water supply system must be—

     (i)         a solar heater complying with (b); or

     (ii)         a heat pump heater complying with (b); or

     (iii)        a gas water heater complying with (c); or

     (iv)        an electric resistance water heater only in the circumstances described in (d); or

     (v)        a wood fired thermosiphon water heater or direct fired water heater each complying with AS/NZS 3500.4; and

Lighting

Maximum illumination power density (W/m2)    Spaces

5   Service area and cleaner's room; Plant Room; Sole-occupancy unit of a Class 3 building

6   Carpark (general); Dormitory of a Class 3 building used for sleepinq only; Toilet, locker room, staff room, rest room

7   Office (artificially lit to an ambient level of less than 200 lx); Health-care (patient ward); Sole-occupancy unit of a Class 9c building

8   Kitchen and food preparation area; Corridors; Class 2 building (common rooms, spaces and corridors); School (general purpose learning areas and tutorial rooms); Museum and gallery (circulation, cleaning and service lightinq); Storage (with shelves no higher than 75% of the height of the aisle lighting)

9   Control room; switch room; Dormitory of a Class 3 building used for sleepinq and study; Office (artificially lit to an ambient level of 200 lx or more)

10 Health-care (children's ward and examination room); Auditorium, board room, church, conference room, lounge, public hall, and wholesale storage and display; Storage with shelves higher than 75% of the height of the aisle lighting; Library (reading room and general areas)

12   Courtroom; Laboratory; Library (stack and shelving area)

13   Health-care (all patient care areas)

15   Entry lobby from outside the building

18   Restaurant, cafe, bar, hotel lounge 

22   Retail space

25   Carpark (entry zone) 

Performance Compliance path

NCC Volume One (Section J) – Commercial Buildings

Energy Requirements:

Insulation

JV3 Verification using a reference building

(a) For a Class 3, 5, 6, 7, 8 or 9 building, compliance with JP1 is verified when it is determined that the annual energy consumption of the proposed building with its services is not more than the annual energy consumption of a reference building 

(g) The design must include—

     (ii)         compliance with—

          (A)        J1.2 for general thermal construction; and

          (B)        J1.3(c) for compensation for a loss of ceiling insulation; and

          (C)        J1.6(a)(ii), J1.6(c) and J1.6(d) for floor edge insulation; and

          (D)        BS 7190 for testing a water heater; and

          (E)        AS/NZS 3823.1.2 at test condition T1 for testing package air-conditioning equipment; and

          (F)        AHRI 550/590 for testing a refrigeration chiller; and

          (G)        Part J8 for facilities for energy monitoring.

 

Windows

JP1

A building, including its services, must have, to the degree necessary, features that facilitate the efficient use of energy appropriate to—

(a) the function and use of the building and services; and

(b) the internal environment; and

(c) the geographic location of the building; and

(d) the effects of nearby permanent features such as topography, structures and buildings; and

(e) solar radiation being—

            (i)         utilised for heating; and

            (ii)         controlled to minimise energy for cooling; and

(f) the sealing of the building envelope against air leakage; and

(g) the utilisation of air movement to assist heating and cooling; and

(h) the energy source of the services.

Space Heating System

JV3 Verification using a reference building

(a) For a Class 3, 5, 6, 7, 8 or 9 building, compliance with JP1 is verified when it is determined that the annual energy consumption of the proposed building with its services is not more than the annual energy consumption of a reference building 

JP3 

Heating such as for a conditioned space must, to the degree necessary, obtain energy from—

(a) a source that has a greenhouse gas intensity that does not exceed 100 g CO2-e/MJ of

thermal energy load; or

(b) an on-site renewable energy source; or

(c) another process as reclaimed energy.

Space Cooling System

JV3 Verification using a reference building

(a) For a Class 3, 5, 6, 7, 8 or 9 building, compliance with JP1 is verified when it is determined that the annual energy consumption of the proposed building with its services is not more than the annual energy consumption of a reference building 

(g) The design must include—

     (ii)         compliance with—

          (E)        AS/NZS 3823.1.2 at test condition T1 for testing package air-conditioning equipment; and

          (F)        AHRI 550/590 for testing a refrigeration chiller; and

Water Heating System

JV3 Verification using a reference building

(a) For a Class 3, 5, 6, 7, 8 or 9 building, compliance with JP1 is verified when it is determined that the annual energy consumption of the proposed building with its services is not more than the annual energy consumption of a reference building 

(g) The design must include—

     (ii)         compliance with—

          (D)        BS 7190 for testing a water heater; 

Compliance Softwares:

JV3 Verification using a reference building

(c) The annual energy consumption calculation method must comply with the ABCB Protocol for Building Energy Analysis Software.

End-uses considered:

Lighting interior, Space cooling, Space heating, Ventilation, Water heating

Resources

Notes

Climate zones