Standard Spacing (Fire Sprinklers) Building Codes & Rules
- Fire Sprinklers Standard Spacing Tools™ simplifies the National Construction Code (NCC) with interactive graphics, including deemed to comply & best practices.
AS 2118.1:2017, 7.9.8
Prohibited Use of PipingAS 2118.1:2017, 7.9.8
- As a link in an earthing circuit
- As a support to other services
AS 2118.1:2017, 5.5.3 (b)
Sprinkler Spacing measured horizontallyAS 2118.1:2017, 5.5.3 (b)
Raked Ceiling
High Hazard
Row Centres
Spacing
S x R
Deflectors parallel to Ceiling
AS 2118.1:2017, 5.1
≤ 12m²AS 2118.1:2017, 5.1
AS 2118.1:2017, 5.1
R / 2AS 2118.1:2017, 5.1
AS 2118.1:2017, 5.1
S / 2AS 2118.1:2017, 5.1
Ordinary Hazard
Sprinkler near Wall
Ordinary Hazard
Light Hazard
Open-joist Ceiling
AS 2118.1:2017, 5.3
Minimum SpacingAS 2118.1:2017, 5.3
- ≥ 2m Standard Coverage, or
- ≥ 2.4m Extended Coverage Type
- Baffles allow spacing to be reduced
- ≥ 200 (W) x 150mm (D)
- ≤ 1/2 design spacing from Sprinkler
AS 2118.1:2017, 5.6.1 (c)
AS 2118.1:2017, 5.4
Distance from Walls
- ≥ 100mm, orAS 2118.1:2017, 5.6.1 (c)
- Sidewall Sprinkler (vertical)
- 50 to 150mmAS 2118.1:2017, 5.4
High Hazard
AS 2118.1:2017, 5.1
S ≤ 4.2mAS 2118.1:2017, 5.1
AS 2118.1:2017, 5.1
S ≤ 4.6mAS 2118.1:2017, 5.1
Cupboards & Wardrobes
- Sprinklers not required[1]
- ≤ 2.5m² floor area
- No flammable liquid stored
Cupboards RULES
NCC 2022 V2
Class 2 to 9
NCC 2022 Vol 1, S17C2 [2019 E1.5: 1]
May 2023
NCC 2022 Vol 1, S17C2
NCC 2022 Vol 1, S17C1
AS 2118.1:2017, 1
AS 2118.1:2017, 5.9.17
- Fire Sprinkler Systems as per NCCNCC 2022 Vol 1, S17C2
- Requirements for Fire Sprinklers within Cupboards to NCCNCC 2022 Vol 1, S17C1 & Australian StandardsAS 2118.1:2017, 1
- Sprinklers within Cupboards are not required ifAS 2118.1:2017, 5.9.17
- ≤ 2.5m² floor area
- Non-combustible Walls & Ceiling
- Not used for storage of flammable liquids
- Sprinklers in the adjacent area positioned to cover the unprotected area
- Obstructions are not taken into consideration in this scenario
AS 2118.1:2017, 5.9.17
- Sprinklers not requiredAS 2118.1:2017, 5.9.17
- ≤ 2.5m² floor area
- No flammable liquid stored
Shadowed Areas
- ≤ 1.4m² per Sprinkler[1]
Shadowed Areas RULES
NCC 2022 V2
Class 2 to 9
NCC 2022 Vol 1, S17C2 [2019 E1.5: 1]
May 2023
NCC 2022 Vol 1, S17C2
NCC 2022 Vol 1, S17C1
AS 2118.1:2017, 1
AS 2118.1:2017, 5.7.10
- Fire Sprinkler Systems as per NCCNCC 2022 Vol 1, S17C2
- Requirements for Fire Sprinklers Shadowed Areas to NCCNCC 2022 Vol 1, S17C1 & Australian StandardsAS 2118.1:2017, 1
- The total surface area of all the obstructed or shadowed regions within the coverage area of a single sprinkler must be ≤ 1.4m²AS 2118.1:2017, 5.7.10
AS 2118.1:2017, 5.7.10
- ≤ 1.4m² per SprinklerAS 2118.1:2017, 5.7.10
AS 2118.1:2017, 5.1
R / 2AS 2118.1:2017, 5.1
AS 2118.1:2017, 5.7.7
Clearance Below Sprinkler HeadsAS 2118.1:2017, 5.7.7
- ≥ 900mm for High Hazard Storage
- ≥ 100mm for rolling storage cabinets
- ≥ 250mm for washrooms & toilet cubicles
- ≥ 500mm for general cases
- ≤ 3.0m room height
- Required clearance maintained on sloping ceiling or roofs
Sprinklers Near Column
- Applies on column face both directions
Sprinklers Near Columns
NCC 2022 V3
All Building Classes
NCC 2022 C1V3, Specification 17, Specification 18
[2019 CV3, Spec E1.5,Spec E1.5a]
May 2022
AS 2118.1:2017, 5.7.4
AS 2118.1:2017, 5.1
- Ensures adequate coverage of the area surrounding the columnAS 2118.1:2017, 5.7.4
- Standards Sprinkler Spacing AppliesAS 2118.1:2017, 5.1
- Applies on column face both directions
To Deflectors
AS 2118.1:2017, 5.1
≤ 21m²AS 2118.1:2017, 5.1
Light Hazard
AS 2118.1:2017, 5.1
R ≤ 3.7mAS 2118.1:2017, 5.1
AS 2118.1:2017, 5.5.3 (b)
Sprinkler Spacing measured horizontallyAS 2118.1:2017, 5.5.3 (b)
AS 2118.1:2017, 5.5.3 (h)
AS 2118.1:2017, 5.1
≤ 9m²AS 2118.1:2017, 5.1
AS 2118.1:2017, 5.4
≥ 100AS 2118.1:2017, 5.4
