CPCCWP5003 — Design waterproofing to internal wet area

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What an assessment for CPCCWP5003 must cover

58 assessable components: 4 elements (25 performance criteria), 16 performance evidence and 17 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.

Elements & performance criteria

1 Plan and prepare.

1.1Identify internal wet areas and waterproofing requirements in accordance with National Construction Code (NCC) and from drawings and specifications.
1.2Identify types of construction and their permeability to water and moisture, including concrete, masonry and framing.
1.3Determine the use of the wet area to be waterproofed and categorise as low, medium or high usage, including finishes in accordance with client’s needs and use of wet area.
1.4Identify shower type to inform the design.
1.5Identify extent of membrane application to inform the design.
1.6Identify egress points to inform the design.
1.7Identify potential water ingress points for the construction.
1.8Determine the scope of project, conditions to be managed and waterproofing requirements to be achieved.
1.9Determine outfalls to suit water inlet and use of area.

2 Carry out risk analysis.

2.1Assess risk of water bearing to full extent of application and the effects of charged dynamic water movement in high usage conditions.
2.2Assess risks of defects in the waterproofing systems.
2.3Assess consequence of water and moisture ingress into space outside of the wet area.
2.4Assess and manage interstitial condensation within building elements as part of design.
2.5Determine effects of water and moisture on building elements.
2.6Determine feasibility of repair and maintenance of the waterproofing system.
2.7Identify site environmental conditions according to approved plans, including surface and sub-surface drainage.

3 Carry out waterproofing design.

3.1Confirm type of wet area for use and confirm shower type and components.
3.2Confirm other fittings and fixtures in internal wet area, including bath type and position, vanity type and position, toilet/bidet type and position.
3.3Identify internal wet area waterproofing systems available to suit the design that are appropriate for the conditions.
3.4Develop design requirements for level of risk to moisture and water exposure in consultation with stakeholders.
3.5Provide a scope for the installation of the internal wet area waterproofing system, including substrate considerations and compatibility with finishes, in accordance with specifications.
3.6Provide quality assurance inspection protocols for internal wet area waterproofing system installation, including substrate assessment for suitability, compliance of membrane installation with manufacturers’ specifications, completion inspection processes, and repair and maintenance plan.

4 Evaluate waterproofing design.

4.1Assess effectiveness of internal wet area waterproofing systems design for suitability with site conditions and consequential effect where water bears at the maximum designed level, defects are present in the waterproofing system and defects impact the usage of adjoining areas.
4.2Review repair and maintenance plan of internal wet area waterproofing system.
4.3Record and report on compliant internal wet area waterproofing design solutions to stakeholders in accordance with service conditions and manufacturers’ specifications, Australian Standards, and NCC performance requirements.

Performance evidence

develop two (2) waterproofing designs for internal wet areas.
develop one (1) design for wet areas and change rooms, including open unenclosed group showers with multiple wastes and disabled access which must include: a cross-section design of the complete system, including strata layers, provision of falls, water stop details, extent of membrane application and compatible finishes for intended use
develop one (1) design for a high risk and high usage wet area selected from one of the following: douche room with handheld rose, steam room, birthing suite with a birthing bath and access steps, bathroom with type 2 open unenclosed shower, with window in shower area, free standing bath, wall mount vanity and falls to full floor areas and must include: a cross-section design of the complete system, including strata layers, provision of falls, water stop details, extent of membrane application, water inlet and outfalls and compatible finishes for intended use
confirm screen/barrier, water inlet positions, number and position of floor wastes, floor water stop positions and vertical water stop positions
provide evidence of compliance with principal design requirement, stakeholder needs, National Construction Code (NCC) performance requirements, Australian Standards, work health and safety (WHS), environmental requirements, manufacturer’s specifications, and drawings and specifications.
The evidence of compliance report must detail: class of building
type of construction
category of wet area
category of shower
water inlet and outfalls
overflows effects to area affected by leaks adjoining and below the wet area
compatibility of materials specified, including finishes
provide a risk assessment report for the two (2) required designs detailing the: waterproofing system solution for the intended service use and site condition
management of potential defects in the waterproofing system
consequences of water entering the relevant space
feasibility of repair of the waterproofing system.

Knowledge evidence

key principles of surface water movement and sub-surface water movement, drainage and capillarity
role for waterproofing, including: retention within a wet area, exclusion from non-water-resistant materials, design for surface conditions
various types of construction and their permeability to water and moisture, including: concrete, masonry, framed
methods of waterproofing to internal wet areas suited to type of construction
key design philosophies for internal wet area waterproofing, including: deformation, stress/strain, especially flexural, compressive and tensile stresses, incorporation of acoustic systems, energy efficiency, including: ventilation requirements in buildings, incorporation of heating elements such as under-floor heating
internal wet area waterproofing systems available and knowledge of their properties for system selection for the conditions, including: bonded sheet membranes, liquid applied membranes
building elements and integration, including: product properties and compatibility with building elements, installation method and practices, stages of installation and inspection benchmarks
waterproofing systems design and relationship with building design
risk assessment of internal wet areas, including: assessment of service conditions, risk and management of interstitial condensation within building elements as part of design, consequence of defects affecting the use of the intended area, feasibility of repair of the waterproofing system
stakeholders: architect, engineer, builder, building owner, consumer, design team, construction team, certifier, building surveyor, regulators
properties of waterproofing systems available: substrate assessment and preparation, combining components to form a system, component compatibility in a combined system, component properties for site conditions, component installation practices, system analysis for effectiveness
assessment of complex water and moisture ingress situations: moisture and water remedial system relationships, combination of systems to form multiple barriers
application rates of specified waterproofing systems and installation procedures
methods for calculating the quantities of product required to complete the waterproofing works specified
the advantages and disadvantages of the different systems, including: combinations of different systems and their limitations, maintenance and aftercare requirements, the form and feasibility of remedial work
types of finishing systems, including decorative finishes
implications of dampness affecting timber in buildings, including: identification of timbers that have been affected by water, decay fungi or wood consuming insects, providing suitable advice on the need for specialist assessment.

Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.

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Questions about assessing CPCCWP5003

What does an assessment tool for CPCCWP5003 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for CPCCWP5003 needs to address all 58 unit components: 4 elements with 25 performance criteria, 16 performance evidence requirements, 17 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for CPCCWP5003?

Auditori pulls the current release of CPCCWP5003 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

Yes. Every new account includes one free credit — enough to generate the complete assessment tool for CPCCWP5003 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing CPCCWP5003 assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of CPCCWP5003, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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