The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.
Scope of work must include:
calculation of rainfall intensities in given catchment areas, including:
average rainfall intervals
stormwater collection area calculations
time and concentration
interpretation of plans and specifications
sizing and documenting layout of siphonic stormwater drainage systems for residential, commercial and industrial applications and for either new projects or an existing structure being renovated, extended, restored or maintained.
Design requirements must include:
approved point of discharge
Siphonic system attributes must include:
compares range of suitable materials and system choices available to enable cost-effective choices to be made without compromising integrity of project
expected design life
speed of installation.
Statutory and regulatory requirements and relevant Australian standards and codes may include:
AS/NZS3500 National plumbing and drainage
AS2200 Design charts for water supply and sewerage
commonwealth, state or territory requirements and local governments requirements
National Construction Code
other relevant Australian standards and codes.
Manufacturer requirements may include:
technical and trade manuals
special siphonic drainage collection inlets.
Desktop study may include collection and interpretation of existing data for design purposes in:
architectural and building plans
other documents, including:
other reports as available.
Performance requirements may include:
pipe flow velocities, flow conditions and discharge requirements, established using relevant Australian standards, codes and local authorities’ requirements.
Layout of pipework systems:
amenity of the building
clipping and pipe support
function of the building
impingement on floor heights
location of pipework (fire rating of enclosure)
materials to be used
size of penetrations
type of building structure
should not unduly affect building integrity and aesthetic appeal
should have principles of economy, serviceability, durability and fit for use applied.
Fittings may include:
Pipe size and flow requirement calculations may include:
sizing, according to relevant Australian standards and codes
Pipe supports may include:
wall and ceiling brackets.
Materials and components may include:
appropriate materials specified, based on fit for purpose, durability, compatibility and cost-effectiveness, including:
other approved material
components, may include:
siphonic collection inlets.
Jointing methods may include:
other approved jointing methods.
Installation requirements must include:
pipe protection, which may include:
level of workmanship
manufacturer-recommended specific fixings
provision for expansion
serviceability and access.
Computer software packages may include:
proprietary design software.
Sustainability principles and concepts:
cover the current and future social, economic and environmental use of resources
selecting appropriate material to ensure minimal environmental impact
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.
may be produced using:
Specification may include:
work health and safety (WHS).
Testing may include:
quality assurance (QA) audit.
Commissioning schedule may include:
checking for foreign material
system functions as per design.
Operation and maintenance manual may include:
as installed drawings
results of commissioning test
manufacturer brochures and technical information
check for blockages
regular maintenance requirements.