NCC 2019 Volume Two
Classification
Building class 1a Building class 1b Building class 2 Building class 3 Building class 4 Building class 5 Building class 6 Building class 7a Building class 7b Building class 8 Building class 9a Building class 9b Building class 9c Building class 10a Building class 10b Building class 10c

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Classification
Building class 1a Building class 1b Building class 2 Building class 3 Building class 4 Building class 5 Building class 6 Building class 7a Building class 7b Building class 8 Building class 9a Building class 9b Building class 9c Building class 10a Building class 10b Building class 10c
NSW 1.1 Garage top dwellings acceptable construction practice

NSW 1.1 Garage top dwellings acceptable construction practice

Appropriate Performance Requirements

Appropriate Performance Requirements

Where a Performance Solution to NSW 1.1 is proposed, that proposal must comply with—

  1. Performance RequirementP2.3.1; and
  2. Performance RequirementP2.3.2; and
  3. relevant Performance Requirements determined in accordance with A2.2(3) and A2.4(3) as applicable.

NSW 1.1.0 Definitions

The following definition is used in this Part:

Garage top dwelling means a Class 1a dwelling located above a Class 10a private garage which is not associated with that Class 1a dwelling and includes any internal entry stair serving the garage top dwelling.

NSW 1.1.1 Fire separation

(a)

A garage top dwelling must be separated from a non-associated private garage by a floor complying with NSW 1.1.2.

(b)

Where a garage top dwelling is served by an internal stair, the garage top dwelling must be separated from a non-associated private garage by a wall complying with NSW 1.1.3.

(c)

Where a garage top dwelling is located above both associated and non-associated private garages—

(i)

in addition to a floor required by (a), the private garages must be separated with a wall complying with NSW 1.1.3; or

(ii)

where a garage top dwelling is not served by an internal stair, the garage top dwelling may be separated from the private garages by a floor complying with NSW 1.1.2.

NSW 1.1.2 Construction of floors

(a)

A floor required by NSW 1.1.1(a) or (c)(ii) must—

(i)

have an FRL of not less than 30/30/30 when tested from the underside; or

(ii)

have a fire-protective covering on the underside of the floor, including beams incorporated in it; or

(iii)

be a floor/ceiling system incorporating a ceiling which has a resistance to the incipient spread of fire to the space above itself of not less than 60 minutes.

(b)

Where a floor subject to (a)(i) depends on direct vertical or lateral support from another part to maintain its FRL, that supporting part must have an FRL of not less than 30/-/-.

(c)

Where a service passes through a floor referred to in (a), the penetration must not reduce the fire performance of the floor or covering.

NSW 1.1.3 Construction of walls

(a)

A wall required by NSW 1.1.1(b) or (c)(i) must—

(i)

have an FRL of not less than 30/30/30 when tested from the non-associated private garage side; or

(ii)

be of masonry construction not less than 90 mm thick.

(b)

A wall subject to (a) must—

(i)

commence at the footings or ground slab; and

(ii)

extend to the underside of a floor complying with NSW 1.1.2.

(c)

A wall referred to in (a)(i), if of lightweight construction must be tested in accordance with Specification C1.8 of BCA Volume One.

(d)

Where a service passes through a wall referred to in (a), the penetration must not reduce the fire performance of the wall.

(e)

A wall required by NSW 1.1.1(b) or (c)(i) need not comply with 3.7.3.2.

NSW 1.1.4 Heat alarms

(a)

A heat alarm must be installed in a private garage that is not associated with and located below, a garage top dwelling.

(b)

A heat alarm required by (a) must—

(i)

be located on or near the ceiling; and

(ii)

comply with AS 1603.3; and

(iii)

be connected to the consumer mains power supplying the garage top dwelling where consumer mains power is supplied to the building; and

(iv)

be interconnected to and activate the garage top dwelling smoke alarms required by 3.7.5.3.

(c)

Durable notices must be permanently fixed to the garage top dwelling and non-associated private garage in prominent locations, indicating that—

(i)

a heat alarm is installed in the non-associated private garage; and

(ii)

the heat alarm is interconnected to the garage top dwelling smoke alarms.