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Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

  1. Evaluate design parameters.

Required Skills

Required skills

communication skills to

confirm job specifications and client requirements and to communicate with others to ensure safe and effective work practices

use clear and direct questioning to

identify and confirm requirements

listen and understand

share information

use and interpret nonverbal communication

use language and concepts appropriate to cultural differences

initiative and enterprise skills to

develop creative and responsive approaches

identify and accurately report to appropriate personnel any faults in tools equipment or materials

literacy skills to

read and interpret

manufacturer requirements and manuals

plans specifications drawings and design briefs

standards

statutory and regulatory requirements

produce written information including

documentation such as plans specifications and schedules

an operation and maintenance manual

planning and organising skills to

research collect organise and understand information relating to the design of complex sanitary and plumbing drainage systems

take initiative and make decisions

problemsolving skills to analyse requirements consider options and design an appropriate system

teamwork skills to work with others to action tasks and relate to people from a range of cultural and ethnic backgrounds and with varying physical and mental abilities

technology skills to

access and understand sitespecific instructions in a variety of media

use mobile communication technology

Required knowledge

ASNZS National plumbing and drainage

AS Design charts for water supply and sewerage

common terminology and definitions used in design of complex sanitary plumbing and drainage systems for all classes of building

National Construction Code

other relevant Australian standards codes or standard operating procedures

principles of technology in the design of hydraulic systems

procedures for maintaining air balance within the systems

requirements of state regulatory authorities Australian standards and manufacturer specifications including hazards identified in relation to devices and systems used

workplace safety requirements including relevant statutory regulations codes and standards

Evidence Required

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria required skills and knowledge range statement and the Assessment Guidelines for the Training Package

Overview of assessment

This unit of competency could be assessed in the workplace or a close simulation of the workplace environment providing that simulated or projectbased assessment techniques fully replicate plumbing and services workplace conditions materials activities responsibilities and procedures

It may be assessed on its own or as part of an integrated assessment activity involving carrying out the effective performance and application of drainage principles and detailing system components used in the drainage industry

Critical aspects for assessment and evidence required to demonstrate competency in this unit

A person who demonstrates competency in this unit must be able to provide evidence of the ability to

design size and document the layout details of a complex sanitary plumbing and drainage system including a specification for a high rise mixed development building using two approved sanitary plumbing systems to an effective height above metres inclusive of a basement to include fixtures on each floor level fixtures are included in the basement and

applying sustainability principles and concepts throughout to achieve a star rating under the Green Building Council of Australia rating scheme

evaluating and documenting design parameters including client regulatory manufacturer and relevant Australian standard and code requirements for a range of complex sanitary plumbing and drainage systems

evaluating health risks associated with the sanitary plumbing and drainage system

planning and detailing system components including

access chambers manholes

gullies

anchorage blocks

pumpwells

piping systems

designing and sizing a complex sanitary plumbing and drainage system

applying drainage principles in the design and sizing of a complex elevated pipe system

designing and sizing a rising main

designing and sizing a fully vented or fully vented modified system

designing and sizing a single stack or single stack modified system

preparing plans to industry standards for a range of complex sanitary plumbing and drainage systems

preparing a specification for a complex sanitary plumbing and drainage system

preparing a testing and commissioning schedule

preparing an operation and maintenance manual

complying with WHS regulations applicable to workplace operations

communicating with others to ensure safe and effective workplace operations

Context of and specific resources for assessment

This competency is to be assessed using standard and authorised work practices safety requirements and environmental constraints

Assessment of essential underpinning knowledge will usually be conducted in an offsite context

Assessment is to comply with relevant regulatory or Australian standards requirements

Resource implications for assessment include

an induction procedure and requirement

realistic tasks or simulated tasks covering the minimum task requirements

relevant specifications and work instructions

tools and equipment appropriate to applying safe work practices

support materials appropriate to activity

workplace instructions relating to safe work practices and addressing hazards and emergencies

material safety data sheets

research resources including industryrelated systems information

Reasonable adjustments for people with disabilities must be made to assessment processes where required This could include access to modified equipment and other physical resources and the provision of appropriate assessment support

Method of assessment

Assessment methods must

satisfy the endorsed Assessment Guidelines of the Construction Plumbing and Services Training Package

include direct observation of tasks in real or simulated work conditions with questioning to confirm the ability to consistently identify and correctly interpret the essential underpinning knowledge required for practical application

reinforce the integration of employability skills with workplace tasks and job roles

confirm that competency is verified and able to be transferred to other circumstances and environments

Validity and sufficiency of evidence requires that

competency will need to be demonstrated over a period of time reflecting the scope of the role and the practical requirements of the workplace

where the assessment is part of a structured learning experience the evidence collected must relate to a number of performances assessed at different points in time and separated by further learning and practice with a decision on competency only taken at the point when the assessor has complete confidence in the persons demonstrated ability and applied knowledge

all assessment that is part of a structured learning experience must include a combination of direct indirect and supplementary evidence

Assessment processes and techniques should as far as is practical take into account the language literacy and numeracy capacity of the candidate in relation to the competency being assessed

Supplementary evidence of competency may be obtained from relevant authenticated documentation from third parties such as existing supervisors team leaders or specialist training staff


Range Statement

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.