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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 includes: | calculation of rainfall intensities in given catchment areas, including:average rainfall intervalsmeteorological informationrainfall intensitiesroof calculationssurface and subsurface calculationstime and concentrationinterpretation of plans and specificationssizing and documenting layout of siphonic stormwater drainage systems for residential, commercial or industrial applications and for either new projects or an existing structure being renovated, extended, restored or maintained. |
Design requirements include: | owner requirementsarchitectural specificationsbuilder specificationsspecialist water use applications. |
Siphonic system attributes include: | availabilitycostinstallation requirementsriskssite conditions. |
Cost-benefit analysis includes: | comparison of range of suitable materials and system choices available to enable cost-effective choices to be made without compromising integrity of project. |
Statutory and regulatory requirements and Australian and New Zealand standards include: | Acts, regulations and local and state government policies, including group and strata titlingAS/NZS3500 National plumbing and drainage setAS2200 Design charts for water supply and sewerageBuilding Code of Australia. |
Manufacturer requirements include: | material specificationspump tablessizing tablestechnical and trade manuals. |
Desktop study includes collection and interpretation of existing data for design purposes from: | architectural and building planscouncil plansdeveloper plansother documents, including:applicationsformssewer detail mapsother reports as available. |
Performance requirements include: | pipe grades, cover, flow conditions and discharge requirements, established using Australian and New Zealand standards and local authority plans. |
Layout of pipework systems: | includes consideration of:amenity of the buildingclipping and pipe supportfireproofingfunction of the buildingimpingement on floor heightsmaterials to be usedsize of penetrationstype of building structureshould not unduly affect building integrity and aesthetic appealshould have principles of economy, serviceability, durability and fit for use applied. |
Fittings and valves include: | bendsinspection openingsjunctions. |
Pipe size and pipe grade requirement calculations include: | dischargeflowfreeboardmanufacturers' tablessizing, according to Australian and New Zealand standardsurban drainage requirementsvelocityvolumes. |
Pipe fixings include: | anchorsbracket spacingcorrosion protectioncoverhanging bracketsmaterial requirementssaddleswall and ceiling brackets. |
Materials and components include: | appropriate materials specified, based on fit for purpose, durability, compatibility and cost-effectiveness, including:high density polyethylene (HDPE)polyvinyl chloride (PVC)stainless steelcomponents, including:clipsfastenersfittingspipeworksiphonic outletsvalves. |
Jointing methods include: | brazinggluingmechanical jointsrubber ringsolvent cement weldingthreading. |
Installation requirements include: | beddingclippingconcrete supportinstallation detailsjointing requirementslevel of workmanship. |
Computer software packages include: | manufacturers' softwareproprietary design software. |
Plans include: | elevationsdetailscross-sectionsisometricsaxonometricsschematics, which may be produced using:pencilIndian inkpigment linercomputer generationsections. |
Specification includes: | beddingclippingconcrete supportdetails of specialised componentsjointingmanholesmanufacturer requirementsmaterialsworkmanship. |
Testing includes: | air pressure testhydrostatic testinspectionquality assurance (QA) audit. |
Commissioning schedule includes: | charging trapschecking leakscleaning gratespurging system. |
Operation and maintenance manual includes: | check for blockagesleak detectionregular inspectionregular maintenance requirements. |