Base of Parapet Building Codes & Rules
- Base of Parapet Tools™ simplifies the National Construction Code (NCC) with interactive graphics, including deemed to comply & best practices.
Tools™ Best Practice
≥ 1 : 80Tools™ Best Practice
AS 4654.2:2012, 2.5.2
≥ 1 : 100AS 4654.2:2012, 2.5.2
AS 4654.2:2012, 2.11
Membrane
- Bond to OverflowAS 4654.2:2012, 2.11
AS 4654.2:2012, 1.5
AS 4654.2:2012, 2.11
Membrane Protection
- Protect the membrane from wear & UVAS 4654.2:2012, 1.5
- Clear of outlet in order not to reduce the design flowAS 4654.2:2012, 2.11
Tools™ Best Practice
Fall to Drain
M
M
Finished Level
M
M
Fall
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
Preformed Outlet
with Face Flange
Hob Upturn
or Parapet
Floor System
Drip Groove
Membrane
Substrate
Preparation
Fillet
Tools™ Best Practice
Overflow through Parapet
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
- Height varies with wind classAS 4654.2:2012, 2.8.1.1AS 4654.2:2012, A
Redirecting... (5)