AAC Panel Wall (FRL) Building Codes & Rules
- FRL Material AAC Panel Tools™ simplifies the National Construction Code (NCC) with interactive graphics, including deemed to comply & best practices
Fire Resistance of Building Elements
- Consult a Certified Professional for specific FRL requirements
AS 5146.3:2018, 2.6.2 (a)
AS 3700:2018, 6.3.2.2
Adhesive at Edge Joints
Continuous Steel Angle
Continuous Steel Channel
DPC
Acoustics
- Rw + Ctr 31
FRL Brickwork
FRL Plasterboard
FRL Blockwork
Services Chasing
- Fire Resistance Requirement[1]
- ≥ ½ of thickness, or
- ≥ 10,000mm² within any 5m² area
AAC Services Chasing RULES
NCC 2022 V1
All Building Classes
NCC 2022, Specification 1, Specification 5 [2019: Sch 5:1, Spec C1.1:1]
May 2023
AS 5146.1:2015, 2.2.6 (b)
AS 5146.1:2015, 2.2.6 (c) (i)
AS 5146.1:2015, 2.2.6 (c) (ii)
AS 5146.1:2015, 2.2.6
- Reinforced Autoclaved Aerated Concrete building elements be constructed to NCC Specification 1, 5, & AS 5146
- If a recess in a reinforced AAC elementAS 5146.1:2015, 2.2.6 (b)
- ≥ ½ AAC Panel or Block thickness, or
- ≥ 10,000mm² within any 5m² area
- Exclude the recess depth when calculating the element's FRL
- Chasing Restrictions
- Generally not allowedAS 5146.1:2015, 2.2.6 (c) (i)
- Chasing is permitted if additional structural support is provided to maintain the required Structural AdequacyAS 5146.1:2015, 2.2.6 (c) (ii)
- Chasing not requiredAS 5146.1:2015, 2.2.6
- < 10,000mm² within any 5m² area
AS 5146.1:2015, 2.2.6
- Fire Resistance RequirementAS 5146.1:2015, 2.2.6
- ≥ ½ of thickness, or
- ≥ 10,000mm² within any 5m² area
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