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Elements and Performance Criteria

1. Assess influence of common construction materials on thermal performance of residential building.
   • Properties of construction materials that may influence thermal performance of building are identified.
   • Properties of glazing units that may influence the thermal performance of building are identified.
   • Ways in which the use of building materials may influence the thermal performance of building are identified.
   • Impact of climate on the choice of construction materials that improve the thermal performance of building is identified.
   • Ways in which physical constraints may influence the choice of building materials when improving the thermal performance of building are identified.
   • Construction materials are identified that meet requirements for improving the thermal performance of building.
   • Correct use and installation of materials to improve thermal performance are identified.
   • Condition of materials and the effect of condition on degrading thermal performance are identified.
2. Assess impact of building design features on thermal performance of residential building.
   • Building design features that influence the thermal performance of building are identified using correct industry and regulatory terminology.
   • Potential impact of building design features on thermal performance is identified.
   • Ways in which building design features may be altered to improve thermal performance of building are identified.
3. Assess impact of residential construction methods on thermal performance of residential building.
   • Residential construction methods are identified using correct industry terminology.
   • Potential impact of construction methods on thermal performance of building is identified.
   • Key components of the building envelope are identified using correct industry terminology.
   • Impact of the construction of the key features of the building envelope on thermal performance is identified.
4. Assess impact of common building defects on thermal performance of residential building.
   • Common building defects and poor construction techniques, as well as condition of building elements that may influence thermal performance of the building, are researched.
   • Sources of professional advice on ways of responding to common building defects that may influence the thermal performance of the building are identified.
   • Potential impact of poorly designed or installed measures for improving thermal performance on other aspects of building is researched.

Range Statement

This section specifies work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. Bold italicised wording, if used in the performance criteria, is detailed below.
Properties of construction materialsmust include:	emissivity R-value reflectivity solar absorptance U-value.
Properties of glazing unitsmust include:	solar heat gain coefficient (SHGC) U-value visible light transmission (VLT).
Building design featuresmust include:	convection glazing insulation landscaping mass orientation shading ventilation zoning and layout.
Key components of the building envelopemust include:	flooring roof walls windows.

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Performance Evidence

A person demonstrating competency in this unit must satisfy the requirements of the elements, performance criteria, foundation skills and range of conditions of this unit.

The person must also evaluate the impact of construction materials, design elements, key features of the building envelope, and construction condition on the thermal performance of two different residential buildings.

In doing the above, the person must:

assess the impact of:

building design and external elements on thermal performance of the residential buildings

residential construction methods on thermal performance

identify the impact of the construction of key elements of the building envelope on thermal performance

research non-standard building materials and techniques

identify potential impacts of thermal performance improvements on other health, safety, amenity and sustainability aspects of building performance.

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Knowledge Evidence

A person demonstrating competency in this unit must demonstrate knowledge of:

building construction materials, including types, correct industry terms, and sources of information on their thermal performance

building construction methods, including types, materials, benefits and limitations, and implication for thermal performance of structure

building features that impact on thermal performance

building design features that may influence the thermal performance of a building:

common walls

convection

eaves

floor type

glazing

insulation

landscaping

mass

materials

orientation

shading

siting

thermal mass

ventilation

windows

zoning and layout

types of building envelope components:

flooring

roof

wall

windows

building life cycle, and impact on energy use, costs and sustainability

building materials:

constraints on choice of building materials:

availability

compliance with codes, standards and legislation

cost

practicality

size

space

correct terminology for building materials

causes of and remedies for condensation

National Construction Code (NCC)

passive building design principles

properties of building materials that can influence thermal performance:

emissivity

R-value

reflectivity

solar absorptance

U-value

properties of glazing units that can influence thermal performance:

solar heat gain coefficient (SHGC)

U-value

visible light transmission (VLT).

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