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 project-based assessment techniques fully replicate plumbing and services workplace conditions, materials, activities, responsibilities and procedures.

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 as a minimum, provide evidence of the ability to:

design and document the details for sound-attenuated hydraulic services installation, including a specification for a high-rise mixed development building; using an approved sanitary plumbing and domestic drinking water system to a minimum of 29 floors.

evaluate and document design parameters, to relevant Australian standard and codes, and regulatory, client and manufacturer requirements for a range of sound-attenuated hydraulic services

components must include:

clipping

pipe enclosures

insulation

sound-attenuated pipework

prepare reports on sound-attenuated hydraulic services for a range of applications

prepare specifications for a range of sound-attenuated hydraulic services

prepare testing and commissioning schedules

apply sustainability principles and concepts throughout the design process

communicate with others to ensure safe and effective work site 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 off-site 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 working practices and addressing hazards and emergencies

material safety data sheets

research resources, including industry-related 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 person's 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.

Required skills

communication skills to:

communicate with others to ensure safe and effective work practices

confirm job specifications and client requirements

enable clear and direct communication, using questioning to identify and confirm requirements, share information, listen and understand

use language and concepts appropriate to cultural differences

use and interpret non-verbal communication, such as hand signals

literacy skills to:

prepare written documentation, including:

operation and maintenance manual

plans, specifications and schedules

read and interpret:

plans, specifications, drawings and design briefs

standards and manufacturer requirements and manuals

statutory and regulatory requirements

initiative and enterprise skills to develop creative and responsive approaches

numeracy skills to apply measurements and calculations

planning and organising skills to:

plan and set out work

research, collect, organise and understand information relating to the design of sound attenuated hydraulic services

take initiative and make decisions

problem-solving 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

technical skills to:

determine relevant installation details for sound-attenuated hydraulic services

prepare specifications for sound attenuated hydraulic services

technology skills to:

access and understand site-specific instructions in a variety of media

use mobile communication technology

Required knowledge

application of relevant Australian standards and codes, National Construction Code, manufacturer specifications, and other relevant standard operating procedures relevant to the sector

common terminology and definitions used in the design of sound attenuated hydraulic services for all classes of building

drafting principles

nature of materials used and effects of performance under various conditions

principles of technology in the design of sound attenuated hydraulic services

work health and safety (WHS) requirements, including relevant statutory regulations, codes and standards

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:

documenting layout of sound attenuated hydraulic services, including reduction of noise transfer for residential, commercial and industrial applications

interpreting plans and specifications

may be for new projects or an existing structure being renovated, extended, restored or maintained.

Design requirements must include:

architectural plans

building specifications

acoustic performance of fixtures, fittings and equipment

building construction materials

fire rating of penetrations

owner requirements

pipe enclosures

pipework identification

specialist applications.

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 project

may include:

design styles

energy costs

expected design life

labour costs

material costs

safety factors

speed of installation

suitable materials

system choices.

Statutory and regulatory requirements and Australian standards may include:

Acts, regulations and commonwealth, state or territory, and local government requirements

National Construction Code

AS/NZS3500 National plumbing and drainage

AS2200 Design charts for water supply and sewerage

other relevant Australian standards.

Manufacturer requirements may include:

analysis of sound transmission values

acoustic performance of fixtures, fittings and equipment

specifications

technical and trade manuals.

Desktop study may include collection and interpretation of data for design purposes in:

architectural and building plans

developer plans

manufacturer data

documents, which may include:

applications

brochures

forms

policies

other reports as available.

Performance requirements may include:

flow, velocity, pressure and discharge requirements established using relevant Australian standards, codes and local government authority plans

noise rating of habitable areas.

Noise generation must include:

acoustic performance of fixtures, fittings and equipment

high velocity

high pressure

linking of building compartments by pipework

loose pipework

pumped hydraulic systems

system design

quick action valves

water hammer.

Layout of pipework systems:

must include:

concealed pipework

pipe enclosures

exposed pipework

fire-rated pipework

should have principles of economy, serviceability, durability and fit for use applied

should not unduly affect building integrity and aesthetic appeal.

System calculations must include:

sound criteria for habitable rooms

noise insulation characteristics of materials

sound transmission values of plumbing pipework and building materials.

Pumped hydraulic systems may include:

circulating systems

compressed air systems

pressurised water mains

pump and pump rising mains

pumproom

sanitary rising mains

steam systems.

Pipe supports cover fixings that do not impinge on sound attenuation of the hydraulic service, and may include:

anchors

bracket spacing

hanging brackets

manufacturer-recommended specific fixings

material requirements

provision for expansion

separation and insulation between pipework, supports and building structure.

Materials may include:

expanded foam rubber

glasswool

rockwool

lead vinyl

other approved materials.

Installation requirements:

may be for:

sanitary plumbing

drinking and non-drinking water supply

alternative water supply

stormwater drainage

siphonic stormwater systems

pumping systems

must include:

fire rating

level of workmanship

manufacturer installation requirements

pipe support

serviceability and access.

Material combinations may include:

pipe enclosures

floor, wall and ceiling systems

separation and insulation distances.

Sustainability principles and concepts:

cover the current and future social, economic and environmental use of resources

may include:

efficient use of material

efficient energy usage/capital outlay comparison

consideration of the Green Building Council of Australia rating scheme

selecting appropriate components to ensure minimal environmental impact.

Plans:

may include:

axonometrics

cross-sections

details

elevations

isometrics

sections

schematics, which may be produced using:

computer generation

drawing equipment.

Specification may include:

jointing

manufacturer requirements

materials

performance criteria

safety (WHS)

selection of suitable acoustic rated fixtures, fittings and equipment

separation and insulation between pipework, supports and building structure

support

workmanship.

Testing may include:

compliance testing

quality assurance (QA) audit

performance

sound measurement (dB).

Commissioning schedule must include:

system certification

insulation gap filling

system defects

system functions as per design.

Operation and maintenance manual may include:

as installed drawings

results of commissioning test

certification documentation

maintenance schedules

manufacturer brochures and technical information.