Unit of competency Outline

Date retreived
22/07/2026 9:58 PM AWST

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Design rainwater collection, storage, distribution and re-use systems

Design rainwater collection, storage, distribution and re-use systems

Unit of competency
National Code
CPCPPS5026
State Code
OCN20
TGA Status
Current
DTWD Status
Approved
Current Release Number
1.00
Current Release Date
27/11/2020
View on TGA
State Implementation and Classification
Approved Date
01/06/2021
Field of Education
040327 - Plumbing
Original Release Date
01/06/2021
Nominal Hours
30
Description
This unit specifies the skills and knowledge required to design systems for the collection, storage, distribution and re-use of rainwater for drinking and non-drinking uses, including irrigation, toilet flushing and other uses approved by relevant authorities for high-rise mixed development buildings and wide span projects, such as a school or industrial complex.The role involves interaction with architects, builders, suppliers, clients and relevant planning authorities and requires a sound understanding of applicable legislation, standards and codes.The unit requirements are typically carried out by experienced people such as hydraulic design consultants or design engineers.In some jurisdictions, this unit of competency may form part of accreditation, licensing, legislative, regulatory or certification requirements.
Notes
Elements and Performance Criteria
1 Evaluate design parameters.
  • 1.1 Establish scope of work for rainwater harvesting systems for wide span and high-rise building projects.
  • 1.2 Establish performance requirements considering safety of system users or building occupants.
  • 1.3 Determine design requirements from relevant Australian Standards, codes, plans, specifications and client brief.
  • 1.4 Apply sustainability principles and concepts as part of the design process.
  • 1.5 Analyse potential contamination sources and create design solutions.
  • 1.6 Establish rainfall patterns and required rainwater storage volumes.
  • 1.7 Interpret manufacturer requirements and trade and technical manuals for rainwater harvesting systems.
  • 1.8 Conduct research to outline design parameters.
  • 1.9 Conduct cost-benefit analysis to compare a range of pipe materials and system designs.
2 Plan and detail system.
  • 2.1 Specify tank type and location.
  • 2.2 Plan layout of pipework systems including type and location of fittings, valves and controls.
  • 2.3 Plan and detail first-flush systems.
  • 2.4 Specify water contamination solutions and filtration systems.
  • 2.5 Calculate pipe size for a range of applications.
  • 2.6 Plan and detail separation of services and backflow prevention devices.
  • 2.7 Specify approved non-contaminating materials and jointing methods for rainwater harvesting and design pipe supports.
  • 2.8 Size and detail pump and ancillary requirements.
  • 2.9 Specify installation requirements.
  • 2.10 Specify water treatment according to state and territory health requirements.
  • 2.11 Specify vermin protection according to manufacturer and state and territory requirements.
  • 2.12 Provide allowance for expansion and contraction.
3 Design and size systems.
  • 3.1 Design and detail rainwater harvesting systems.
  • 3.2 Design and detail rainwater re-use systems.
  • 3.3 Design and size rainwater harvesting systems using calculations and manufacturer's data sheets.
4 Prepare documentation.
  • 4.1 Produce client brief of the preferred design.
  • 4.2 Prepare plans and specifications for a range of rainwater harvesting systems.
  • 4.3 Prepare testing and commissioning schedule.
  • 4.4 Produce operation and maintenance manual.
No information
No information
Replaces
State Code National Code Title Type
WF941 CPCPPS5026A Design rainwater collection, storage, distribution and re-use systems Unit of competency
State Code National Code Title Type
BGB3 CPC50620 Diploma of Hydraulic Services Design Qualification