Unit of competency Outline

Date retreived
23/07/2026 7:17 AM AWST

Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.

Design timber-framed buildings

Design timber-framed buildings

Unit of competency
National Code
CPPBDN5108
State Code
OCU46
TGA Status
Current
DTWD Status
Approved
Current Release Number
1.00
Current Release Date
07/01/2021
View on TGA
State Implementation and Classification
Approved Date
16/04/2021
Field of Education
040301 - Building Science And Technology
Original Release Date
16/04/2021
Nominal Hours
80
Description
This unit specifies the skills and knowledge required to design timber-framed buildings in accordance with AS 1684 Residential Timber Framed Construction (AS 1684), AS 4055 Wind loads for housing (AS4055) and within the context of the National Construction Code (NCC). It includes designing timber-framed structures for one and two-storey buildings and selecting, sizing and positioning structural elements.This unit is suitable for drafters and building designers who apply integrated technical and theoretical skills to determine framing requirements and apply compliant materials and processes to timber framing as part of a building design project. This unit forms part of the licensing requirements for people engaged in building design in some states and territories. For further information, check with the relevant regulatory authority.
Notes
Elements and Performance Criteria
1 Determine building design compliance with standards.
  • 1.1 Read and interpret preliminary plans and project brief to confirm timber framing requirements.
  • 1.2 Interpret terminology and definitions, scope and limitations of AS 1684 applicable to building design.
  • 1.3 Identify wind classification for building design in accordance with AS 4055.
  • 1.4 Identify forces and loads in timber-framed structure relevant to building design.
2 Determine specifications for timber framing elements.
  • 2.1 Evaluate properties and stress grading of timber species commonly used in timber framing.
  • 2.2 Evaluate elements and properties of engineered timber to meet required application in timber-framed buildings.
  • 2.3 Specify selection, position and size of floor framing members for building design project.
  • 2.4 Specify selection, position and size of wall framing members for building design project.
  • 2.5 Specify selection, position and size of common rafters, ceiling joists and roof battens.
  • 2.6 Identify and locate hanging beams, ridgeboards and ridgebeams, collar ties underpurlins, struts and strutting beams.
3 Determine bracing and tie-down installation for building design.
  • 3.1 Identify bracing requirements for the project according to building type and location.
  • 3.2 Specify bracing type and installation details to meet project requirements.
  • 3.3 Design the bracing layout for building design project.
  • 3.4 Calculate and specify fixing and tie-down requirements.
4 Prepare timber framing documentation.
  • 4.1 Reconcile specifications to accord with preliminary drawings.
  • 4.2 Develop accurate drawings, annotations and schedules that incorporate timber framing specifications into design documentation.
No information
No information
No information
State Code National Code Title Type
BGI3 CPP50921 Diploma of Building Design Qualification