Unit of competency Outline

Date retreived
24/07/2026 12:22 AM AWST

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Construct stone arches

Construct stone arches

Unit of competency
National Code
CPCCST3017
State Code
OCP42
TGA Status
Current
DTWD Status
Approved
Current Release Number
2.00
Current Release Date
24/12/2024
View on TGA
State Implementation and Classification
Approved Date
01/06/2021
Field of Education
040309 - Bricklaying And Stonemasonry
Original Release Date
01/06/2021
Nominal Hours
70
Description
This unit specifies the skills and knowledge required to build different types of stonemasonry arches using regular and irregular stone. This unit applies to stonemasons who work independently or in a team to construct arches on a new or existing structure. A person working at this level would be expected to take responsibility for organising and completing tasks assigned to them without needing close supervision.Completion of the general construction induction training program specified by the model Code of Practice for Construction Work is required for any person who is to carry out construction work. Achievement of CPCWHS1001Prepare to work safely in the construction industrymeets this requirement. No licensing, legislative or certification requirements apply to this unit at the time of publication.
Notes
Elements and Performance Criteria
1 Plan and prepare.
  • 1.1 Read, interpret and apply stone arch construction requirements from current plans, specifications, standards and codes.
  • 1.2 Follow relevant information from workplace procedures, workplace safety and environmental documentation.
  • 1.3 Calculate material quantities required for the task.
  • 1.4 Determine job priorities and sequence job tasks in consultation with others on site.
  • 1.5 Identify potential hazards and determine and implement control measures.
  • 1.6 Select and check condition of plant, equipment and tools and report damage or faults to relevant person.
  • 1.7 Check conformity of materials against the specifications and place materials in preparation for the work.
2 Set out arch.
  • 2.1 Select, fit correctly and use personal protective equipment (PPE) appropriate for job.
  • 2.2 Measure width and height of arch and transfer dimensions to arch support material.
  • 2.3 Mark striking point and create arch.
  • 2.4 Cut and assemble arch support allowing for ease of release on completion without jarring stonework.
  • 2.5 Mark central keystone and voussoirs onto arch support.
  • 2.6 Set out base, bond and gauge of stone arch.
3 Construct arch with regularly cut stone.
  • 3.1 Mix mortar to colour and consistency to meet job requirements.
  • 3.2 Construct arch columns level and plumb and maintain gauge to springing line of arch.
  • 3.3 Raise arch support and brace level across springing line and crown.
  • 3.4 Cut keystone and voussoirs to pattern with even joints.
  • 3.5 Lay stones with even joints maintaining bond and alignment with stone face.
  • 3.6 Rake joints to specified style and depth.
4 Construct arch with irregular stones.
  • 4.1 Set out and mark keystone to crown of arch.
  • 4.2 Construct arch using random rubble or random squared ashlar to match curved extrados.
  • 4.3 Match stones to abutting stones and lay selected stones using mortar joints maintaining alignment and plumb.
  • 4.4 Remove excess mortar, finish joints to specified profile and depth.
  • 4.5 Clean and brush stone face work.
5 Construct an arch with irregular voussoirs forming stepped extrados.
  • 5.1 Check delivered pre-cut voussoirs/wedges for conformity to design and order.
  • 5.2 Position keystone of archway centrally and lay voussoirs around centre to form arch.
  • 5.3 Lay regular stones where voussoirs are designed to correspond with courses.
  • 5.4 Lay random regular stones where voussoirs are not designed to correspond with courses.
6 Clean up.
  • 6.1 Clear the work area, and dispose of, reuse or recycle following workplace and environmental requirements.
  • 6.2 Clean tools and equipment, check for serviceability and report damage or faults.
  • 6.3 Store and secure tools and equipment following workplace procedures.
No information
No information
Replaces
State Code National Code Title Type
WI761 CPCCST3017A Construct stone arches Unit of competency
State Code National Code Title Type
BGE7 CPC32320 Certificate III in Stonemasonry Qualification