Unit of competency Outline

Date retreived
22/07/2026 2:01 PM AWST

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Design below ground waterproofing

Design below ground waterproofing

Unit of competency
National Code
CPCCWP5001
State Code
OEK74
TGA Status
Current
DTWD Status
Approved
Current Release Number
1.00
Current Release Date
08/12/2022
View on TGA
State Implementation and Classification
Approved Date
06/04/2023
Field of Education
040301 - Building Science And Technology
Original Release Date
06/04/2023
Nominal Hours
70
Description
This unit of competency specifies the skills and knowledge required to design below ground waterproofing systems for buildings and structures. The unit applies to Class 1 and 10 Buildings, and Class 2 to 9 Buildings.The unit includes planning and preparing to design waterproofing systems, analysing risk, and carrying out a detailed design of the waterproofing system solution. The unit is suitable for builders, building surveyors, building designers, architects, waterproofing design specialists and consultants, engineers and other design specialists. Licensing, legislative, regulatory or certification requirements may apply to this unit. Relevant work health and safety (WHS) state and territory regulatory authorities should be consulted to confirm jurisdictional requirements.
Notes
Elements and Performance Criteria
1. Plan and prepare.
  • 1.1 Determine the use of the area and most appropriate form of the waterproofing system, including proposed finishes in accordance with stakeholder needs.
  • 1.2 Determine site conditions and plan a basement waterproofing brief in consultation with all stakeholders identifying challenges and waterproofing system design requirements.
  • 1.3 Assess types of construction proposed and their permeability to water and moisture, including concrete, masonry and framing to be managed and identify potential water ingress points.
  • 1.4 Review drainage system requirements in accordance with the design team.
2. Carry out risk analysis.
  • 2.1 Assess risk of water bearing to full extent of the structure and the effects of hydrostatic pressure on the proposed waterproofing system.
  • 2.2 Assess risks of possible defects in the waterproofing system.
  • 2.3 Assess consequence of water and moisture ingress into an area of the basement.
  • 2.4 Determine the risk of internal condensation and control measures with the design team.
  • 2.5 Determine feasibility of the proposed waterproofing design for the structure and the construction sequence.
  • 2.6 Review any requirement for repair and maintenance of the waterproofing system post construction.
  • 2.7 Analyse site environmental conditions according to approved plans, including surface and sub-surface drainage.
3. Carry out design.
  • 3.1 Identify and assess below ground waterproofing systems available to suit the design that is appropriate for the conditions and in line with the risk analysis.
  • 3.2 Provide detailed design drawings for the installation of the waterproofing system, including factors such as building construction method and construction sequencing, substrate considerations and compatibility with the waterproofing system and other related building elements in accordance with stakeholder needs.
  • 3.3 Provide a basement waterproofing requirement and specification in accordance with the agreed waterproofing design brief and stakeholder needs.
  • 3.4 Carry out a review of and ensure compliance with relevant regulations, National Construction Code (NCC) performance requirements, Australian Standards, work health and safety (WHS), environmental requirements and manufacturers’ requirements.
  • 3.5 Carry out a safety in design analysis of the proposed waterproofing system.
  • 3.6 Provide quality assurance inspection protocols for the waterproofing installation, including substrate assessment for suitability, compliance of membrane installation with project specifications, completion inspection processes and repair and maintenance plan.
  • 3.7 Produce and submit design to stakeholders.
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