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: 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 new projects. |
Design requirements may include: | architectural plans building specifications fire rating of penetrations owner requirements pipework identification soil quality specialist waste applications unstable or water-charged ground. |
Cost-benefit analysis: | compares the range of suitable materials and system choices available to enable cost-effective choices to be made without compromising integrity of the project may include: design styles expected design life labour costs material costs safety factors speed of installation suitability of materials system choices. |
Statutory and regulatory requirements may include: | Acts and regulations local and state government requirements preparation of documentation for authorities’ approval. |
Australian standards and codes may include: | AS/NZS3500 National plumbing and drainage state or territory requirements National Construction Code other relevant Australian standards and codes. |
Manufacturer requirements may include: | material specifications pump tables sizing tables recommended specific fixings for pipework technical and trade manuals. |
Desktop study may include collection and interpretation of data for design purposes, such as: | architectural and building plans developer plans manufacturers’ data documents, which may include: applications brochures forms policies other reports as available. |
Performance requirements must include: | flow, velocity, pressure and discharge requirements, established using relevant Australian standards, codes and local authority plans. |
Layout of pipework systems: | will be based on principles of economy, serviceability, durability and fit for use may include: drainage elevated pipework low pressure pump vacuum vented stack systems. |
Fittings and valves may include: | bends junctions air admittance valves reflux valves inspection openings expansion joints. |
Access chamber details may include: | benching requirements flow gradient requirements inlet and outlet connections ladder access lids open and closed channel sizing. |
Gullies can cover details such as size, location, bedding and concrete support, and also include: | boundary traps disconnector gullies (DG) floor waste (FW) overflow relief gullies (ORG). |
Calculations for complex sanitary plumbing and drainage systems may include: | determination of flow and fixture loadings gradient calculations interpretation of design charts and tables pipe sizing calculations reduced level calculations self-cleaning velocities. |
Anchor blocks design elements may include: | flow forces to be resisted keying and anchorage points sizes soil characteristics. |
Pipe supports may include: | anchors bedding bracket spacing concrete support corrosion protection cover hanging brackets manufacturer-recommended specific fixings material requirements provision for expansion saddles wall and ceiling brackets. |
Pumpwell, pump and pump control requirements may include: | access covers automatic controls capacity chains corrosion-resistant materials detailing emergency storage high and low-level water controls and alarms impeller sizing inlet and outlet design requirements installation and mounting requirements ladder access macerator requirements odour control pump selection pump sizing pumpwell sizing space requirements step irons valve requirements ventilation warning system. |
Materials may include: | cast iron (CI) concrete copper (CU) earthenware (VCP) high density polyethylene (HDPE) unplasticised polyvinyl chloride (PVC-U) other approved material fittings and fixtures, including: measures to prevent the spread of fire sound attenuation requirements. |
Jointing methods may include: | brazing and threading electrofusion welding mechanical joints rubber ring solvent cement welding. |
Installation requirements must include: | bedding clipping concrete support fire rating of penetrations installation details jointing requirements level of workmanship. |
Rising main systems may include: | approved pressure pipe and fittings calculated rise and pump delivery requirements pipe velocities pump sizing to meet calculated flow conditions. |
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 water efficiency consideration of the Green Building Council of Australia rating scheme local environment consideration regarding overflow, disposal and reuse. |
Plans: | may include: axonometrics cross-sections details elevations isometrics schematics sections may be produced using: computer generation drawing equipment. |
Specification may include: | bedding commissioning concrete support and detailing specialised components jointing access chambers (manholes) manufacturer requirements materials pumps safety (WHS) support testing workmanship. |
Testing may include: | air pressure drainage inspection hydrostatic performance quality assurance (QA) audit. |
Commissioning schedule may include: | charging traps checking leaks checking for foreign material checking for system defects checking that system functions as per design checking trap water seal retention cleaning grates system certification. |
Operation and maintenance manual may include: | construction drawings results of commissioning test certification documentation maintenance schedules manufacturer brochures and technical information manufacturer warranties. |