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 meteorological information rainfall intensities 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: | owner requirements architectural plans building specifications pipework identification catchment area approved point of discharge acoustic performance. |
Siphonic system attributes must include: | availability cost installation requirements risks site conditions. |
Cost-benefit analysis: | compares range of suitable materials and system choices available to enable cost-effective choices to be made without compromising integrity of project must include: design styles expected design life labour costs material costs safety factors 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: | material specifications sizing tables 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 manufacturer data developer plans other documents, including: applications brochures forms policies 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: | must include: acoustic performance amenity of the building clipping and pipe support fireproofing 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: | bends junctions. |
Pipe size and flow requirement calculations may include: | discharge flow manufacturers’ tables sizing, according to relevant Australian standards and codes velocity volumes. |
Pipe supports may include: | anchors bracket spacing corrosion protection cover hanging brackets material requirements saddles wall and ceiling brackets. |
Materials and components may include: | appropriate materials specified, based on fit for purpose, durability, compatibility and cost-effectiveness, including: copper (Cu) polyethylene (PE) polypropylene (PP) stainless steel other approved material components, may include: clips fasteners fittings pipework siphonic collection inlets. |
Jointing methods may include: | brazing electrofusion welding mechanical joints rubber ring other approved jointing methods. |
Installation requirements must include: | pipe protection, which may include: corrosion impact fire rating level of workmanship manufacturer-recommended specific fixings pipe support provision for expansion serviceability and access. |
Computer software packages may include: | manufacturer software proprietary design software. |
Sustainability principles and concepts: | cover the current and future social, economic and environmental use of resources may include: 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. |
Plans: | may include: axonometrics elevations details cross-sections isometrics schematics sections may be produced using: computer generation drawing equipment. |
Specification may include: | commissioning bedding support jointing manufacturer requirements materials testing workmanship work health and safety (WHS). |
Testing may include: | hydrostatic test inspection performance quality assurance (QA) audit. |
Commissioning schedule may include: | system certification checking for foreign material checking leaks cleaning grates system defects system functions as per design. |
Operation and maintenance manual may include: | as installed drawings certification documentation results of commissioning test maintenance schedules manufacturer brochures and technical information check for blockages leak detection regular inspection regular maintenance requirements. |