CPCPCM5012 — Design complex stormwater and roof drainage systems

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What an assessment for CPCPCM5012 must cover

158 assessable components: 4 elements (22 performance criteria), 4 performance evidence and 132 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 Identify design parameters.

1.1Determine design scope from plans, specifications and client brief.
1.2Identify applicable regulatory and legislative requirements for the design of complex stormwater and roof drainage systems.
1.3Apply sustainability principles and concepts as part of the design process.
1.4Account for the safety of system users or building occupants.
1.5Determine and estimate rainfall intensity and volume using measurements of different catchment areas.
1.6Analyse overland flood path affecting the property and buildings.
1.7Research and evaluate other information likely to impact the stormwater and roof drainage system design.

2 Plan system components.

2.1Plan and evaluate strategies for harvesting and re-using rainwater.
2.2Plan and evaluate methods of collection and disposal of roof surface run-off water.
2.3Plan and evaluate stormwater detention and retention systems and first-flush stormwater systems.
2.4Determine and specify the most suitable methods of preventing backflow of sub-soil and stormwater into buildings.
2.5Plan and evaluate treatment and disposal options for stormwater discharge.
2.6Plan layout of system components according to design parameters and site limitations and coordinate with other services.

3 Design and size systems.

3.1Apply regulatory requirements, Australian Standards and codes to all aspects of the stormwater and roof drainage system design.
3.2Calculate and specify storage volume, pump capacity and discharge pipe size required for stormwater pumping systems as necessary.
3.3Design stormwater systems requiring pumping.
3.4Design, select, size and detail system components using appropriate calculations, software applications and approved materials.
3.5Specify correct installation, laying and jointing procedures for approved materials and components.

4 Prepare documentation.

4.1Prepare client brief of the preferred design.
4.2Prepare plans and specifications.
4.3Prepare testing and commissioning schedule.
4.4Produce operation and maintenance manual, including information on how to properly and safely maintain the system.

Performance evidence

designing, sizing and documenting the layout details of a complex stormwater and roof drainage system for a site incorporating a high-rise mixed development building within a wide-span multiple building project (such as a school), including: - specification - access chambers - grade of drains - holding pits - collection sumps - detention, retention and harvesting systems - disposal methods for stormwater catchments to council or utility provider’s drainage network or disposal on-site - other system components
using appropriate design software to produce detailed drawings and layout plans, including long sections and cross-sections of the designed system
applying sustainability principles and concepts throughout to achieve a star rating under the Green Building Council of Australia rating scheme
evaluating health risks associated with stormwater and roof drainage systems and action as required within the system design.

Knowledge evidence

relevant codes, Australian standards and specifications:
Australian rainfall and run-off (ARR) guidelines
AS/NZS 3500 Plumbing and drainage set
manufacturer specifications
National Construction Code (NCC)
building codes
work health and safety (WHS) and environmental requirements
plumbing regulations
terminology and definitions used in hydraulic design
computer-aided design (CAD) software
installation methods used in hydraulic systems
hazards associated with devices and systems used in the hydraulic sector
environmental requirements:
clean-up protection
stormwater protection
waste management
water quality management
quality assurance requirements:
Environmental Protection Agency (EPA)
internal company quality assurance policy and risk management strategies
International Standards Organisation (ISO)
site safety plan
workplace operations and procedures
safe work procedures relating to planning, sizing and documenting layout of pipework and fixtures
local government requirements:
Integrated Planning Act (IPA)
standard drawings and details
town planning requirements
treatment requirements such as:
screens
silt traps
solid removal systems
plans and documentation relevant to the design:
site plans
cross-sections
details
elevations
sections
civil drawings
contour levels
existing services
reduced levels
manufacturer requirements and specifications
catchment area analysis
stormwater design
surveys
system components:
access chambers (manholes)
channels
culverts
downpipes
fire rating of penetrations
grated pits
gullies
guttering
inspection chambers
inspection openings
kerbs
piping
pits
treatment options for stormwater discharge:
grass and rock swales
lagoons
momentum diffusers
ponds
screens
silt traps
traps
other removal systems as determined
disposal options for stormwater discharge:
connection to stormwater mains
creeks
harbour
kerb and street channels
lakes
on-site harvesting and reuse
rainwater collection systems, including tanks and dams
rivers
streams
determining rainfall intensities by:
average rainfall intervals
roof, surface and subsurface calculations
site location
time and concentration
catchment areas:
land surface catchment areas, including a variety of surface conditions such as grassed and paved areas
roof catchment areas
stormwater drainage systems:
access chambers (manholes)
collection sumps
detention and retention
grade of drains
harvesting
holding pits
pump discharge
approved piping materials:
concrete
earthenware or vitrified clay pipe (VCP)
fibre cement (FRC)
polyvinyl chloride (PVC)
other approved materials
approved fittings:
bends
grates
gullies
junctions
non-return valves
stormwater systems requiring pumping:
holding tanks
overflow provisions
pump and controls
rising main
methods of applying sustainability principles and concepts:
selecting appropriate material to ensure minimal environmental impact
harvesting and reuse
efficient use of material
efficient energy usage/capital outlay comparison
effect on the environment due to overflow or leakage
consideration of the Green Building Council of Australia rating scheme
specification and user manuals which include information on:
commissioning
bedding
support
concrete support and detailing specialised components
jointing
access chambers (manholes)
manufacturer requirements
materials
pumps
WHS
testing
workmanship.

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 CPCPCM5012

What does an assessment tool for CPCPCM5012 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for CPCPCM5012 needs to address all 158 unit components: 4 elements with 22 performance criteria, 4 performance evidence requirements, 132 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 CPCPCM5012?

Auditori pulls the current release of CPCPCM5012 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?

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Can I check my existing CPCPCM5012 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 CPCPCM5012, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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