Pipe Through Parapet Building Codes & Rules
- Pipe Through Parapet Tools™ simplifies the National Construction Code (NCC) with interactive graphics, including deemed to comply & best practices.
AS 4654.2:2012, 2.11
LocationAS 4654.2:2012, 2.11
- Above finished level & in a visible location
- Direct water away from building
- Visible so blockages can be easily detected
Substrate
M
AS 4654.2:2012, 2.5.2
≥ 1 : 100AS 4654.2:2012, 2.5.2
≥ 25
Bond Breaker
- Form radius with sealant into Overflow
Height of Overflow
- ≥ 25mm below top of Sill, or
- Lowest opening height
Bond Breaker
- 10 x 10mm cast in blockout
- Remove & form Sealant radius
≥ 25
≥ 25
Height of Overflow
- ≥ 25mm below top of Sill, or
- Lowest opening height
Height of Overflow
- ≥ 25mm below top of Sill, or
- Lowest opening height
Fall
Bond Breaker
- 10 x 10mm cast in blockout
- Remove & form Sealant radius
≥ 25
M
M
AS 4654.2:2012, 2.5.2
≥ 1 : 100AS 4654.2:2012, 2.5.2
M
AS 4654.2:2012, 2.11
Overflow Pipe Through ParapetAS 4654.2:2012, 2.11
- Bond breaker bridge between outlet pipe & upstand
- Membrane turned into Overflow
AS 4654.2:2012, 2.11
Finished LevelAS 4654.2:2012, 2.11
- Below Overflow Outlet
- Design flow maintained
≥ 3°
≥ 25
M
Screed
Drip Groove
≥ 50
M
Hobturn or
Parapet
Sealant
Fall to FW
Base of Parapet
Concrete Screeds
Fillet
Floor System
1 : 80
Fall
Membrane
M
Perimeter Expansion Joint
≥ 50
1 : 80
≥ 50
Preformed Flange
Membrane Height
Membrane Height RULES
NCC 2022 V1
All Building Classes
NCC 2022 F1D5 [2019 Table F1.4]
May 2023
NCC 2022 Vol 1, F1D5
AS 4654.2:2012, 2.8.1.1
AS 4654.2:2012, A
- A roof, balcony, podium or similar horizontal surface part of a building must be provided with a waterproofing membraneNCC 2022 Vol 1, F1D5
- To AS 4654.1 & AS 4654.2
- Unless is a deck or perforated or directly above ground
- Measured from top of surface finish to height of membraneAS 4654.2:2012, 2.8.1.1
- Height sufficient to prevent wind-driven water entry
- Varies depending on wind class & level of protection
- Termination heights to AS 4654.2 2012, Table A1 are minimum & informative onlyAS 4654.2:2012, A
- Must be specified based on individual project wind classification
AS 4654.2:2012, 2.8.1.1
AS 4654.2:2012, A
AS 4654.2:2012, 2.8.1.3
AS 4654.2:2012, 2.8.2.1
- Height varies with wind classAS 4654.2:2012, 2.8.1.1AS 4654.2:2012, A
- Terminate with flashing, reglet or at drip grooveAS 4654.2:2012, 2.8.1.3AS 4654.2:2012, 2.8.2.1
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