Home - CPC08 - CPCPCM5000A
Design complex sanitary plumbing and drainage systems
|Unit Descriptor||This unit of competency specifies the outcomes required to undertake the hydraulic engineering design of complex sanitary plumbing and drainage installation and to prepare specifications for a range of residential, commercial and industrial buildings.|
|1 . Evaluate design parameters.||
|2 . Plan and detail system components.||
|3 . Design and size systems.||
|4 . Prepare documentation.||
|Key Competency||Examples of Application||Performance|
|How can information be collected, analysed and organised?|
|How are ideas and information communicated within this competency?|
|How are activities planned and organised?|
|How are problem solving skills applied?|
|How are mathematical ideas and techniques used?|
|How is use of technology applied?|
|How is team work used within this competency?|
Scope of work :
interpretation of plans and specifications
sizing and documenting layout of complex sanitary plumbing and drainage systems for applications, including residential, commercial and industrial
may be for:
existing structure being renovated, extended, restored or maintained
Design requirements can include:
specialist water use applications.
Cost-benefit analysis can include:
comparison of range of suitable materials and system choices available to enable cost-effective choices to be made without compromising integrity of the project.
Statutory and regulatory requirements can include:
Acts and regulations
local and state government policies.
Australian and New Zealand standards can include:
AS/NZS3500 National plumbing and drainage set: Parts 1.1 and 1.2
AS2200 Design charts for water supply and sewerage
Building Code of Australia.
Manufacturer requirements can include:
technical and trade manuals.
Performance requirements include:
flow, velocity, pressure and discharge requirements, established using Australian and New Zealand standards and local authority plans.
Layout of pipework systems can include:
Fittings and valves can include:
Manhole details can include:
connections to and from
open and closed channel
Gullies can cover details such as size, location, bedding and concrete support, and also include:
disconnector gullies (DG)
overflow relief gullies (ORG).
Calculations for complex sanitary plumbing and drainage systems can include:
determination of flow and fixture loadings
interpretation of design charts and tables
pipe sizing calculations
reduced level calculations.
Anchor blocks design elements can include:
flow forces to be resisted
keying and anchorage points
Pipe fixings can include:
wall and ceiling brackets.
Pumpwell, pump and pump control requirements can include:
high and low-level water controls and alarms
inlet and outlet design requirements
installation and mounting requirements
high density polyethylene (HDPE)
unplasticised polyvinyl chloride (uPVC)
fittings and fixtures, including:
measures to prevent the spread of fire
sound attenuation requirements.
Jointing methods can include:
brazing and threading
solvent cement welding.
Installation requirements include:
level of workmanship.
Rising main systems can include:
approved pressure pipe and fittings
calculated rise and pump delivery requirements
pump sizing to meet calculated flow conditions.
may be produced using:
Specification can include:
concrete support and detailing specialised components
Testing can include:
air pressure test
quality assurance (QA) audit.
Commissioning schedule can include:
Operation and maintenance manual can include:
check for blockages
yearly maintenance requirements.
Overview of assessment
This unit of competency could be assessed in the workplace or a close simulation of the workplace environment providing that simulated or project-based assessment techniques fully replicate plumbing and services workplace conditions, materials, activities, responsibilities and procedures.
It may be assessed on its own or as part of an integrated assessment activity involving carrying out the effective performance and application of drainage principles and detailing system components used in the drainage industry.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
A person who demonstrates competency in this unit must be able to provide evidence of:
evaluating and documenting design parameters, including client, regulatory, manufacturer and Australian and New Zealand standard requirements for a range of complex sanitary plumbing and drainage systems
planning and detailing system components, including:
designing and sizing a complex sanitary plumbing and drainage system
applying drainage principles in the design and sizing of a complex elevated pipe system
designing and sizing a rising main
designing and sizing a fully vented or fully vented modified system
designing and sizing a single stack or single stack modified system
preparing plans to industry standards for a range of complex sanitary plumbing and drainage systems
preparing a specification for a complex sanitary plumbing and drainage system
preparing a testing and commissioning schedule
preparing an operation and maintenance manual
complying with OHS regulations applicable to workplace operations
interactive communication with others to ensure safe and effective workplace operations.
Context of and specific resources for assessment
This competency is to be assessed using standard and authorised work practices, safety requirements and environmental constraints.
Assessment of essential underpinning knowledge will usually be conducted in an off-site context.
Assessment is to comply with relevant regulatory or Australian standards' requirements.
Resource implications for assessment include:
an induction procedure and requirement
realistic tasks or simulated tasks covering the mandatory task requirements
relevant specifications and work instructions
tools and equipment appropriate to applying safe work practices
support materials appropriate to activity
workplace instructions relating to safe working practices and addressing hazards and emergencies
material safety data sheets
research resources, including industry related systems information.
Reasonable adjustments for people with disabilities must be made to assessment processes where required. This could include access to modified equipment and other physical resources, and the provision of appropriate assessment support.
Method of assessment
Assessment methods must:
satisfy the endorsed Assessment Guidelines of the Construction, Plumbing and Services Integrated Framework Training Package
include direct observation of tasks in real or simulated work conditions, with questioning to confirm the ability to consistently identify and correctly interpret the essential underpinning knowledge required for practical application
reinforce the integration of employability skills with workplace tasks and job roles
confirm that competency is verified and able to be transferred to other circumstances and environments.
Validity and sufficiency of evidence requires that:
competency will need to be demonstrated over a period of time reflecting the scope of the role and the practical requirements of the workplace
where the assessment is part of a structured learning experience the evidence collected must relate to a number of performances assessed at different points in time and separated by further learning and practice, with a decision on competency only taken at the point when the assessor has complete confidence in the person's demonstrated ability and applied knowledge
all assessment that is part of a structured learning experience must include a combination of direct, indirect and supplementary evidence.
Assessment processes and techniques should as far as is practical take into account the language, literacy and numeracy capacity of the candidate in relation to the competency being assessed.
Supplementary evidence of competency may be obtained from relevant authenticated documentation from third parties, such as existing supervisors, team leaders or specialist training staff.