Unit of competency Outline

Date retreived
22/07/2026 9:03 PM 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.

Construct stone arches

Construct stone arches

Unit of competency
National Code
CPCCST3017A
State Code
WI761
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
1.00
Current Release Date
17/01/2014
State Implementation and Classification
Approved Date
20/06/2014
Field of Education
040309 - Bricklaying And Stonemasonry
Original Release Date
20/06/2014
Nominal Hours
70
Description
This unit of competency specifies the outcomes required to build stonemasonry arches of different types, using regular and irregular stone, and according to detailed job drawings and specifications.
Notes
Elements and Performance Criteria
1 Plan and prepare for work.
  • 1.1 Work instructions are obtained from relevant information, confirmed and applied to planning and preparation.
  • 1.2 Work health and safety (WHS) requirements are followed according to safety plans and policies.
  • 1.3 Signage and barricade requirements are identified and implemented.
  • 1.4 Plant, tools and equipment selected to carry out tasks are consistent with job requirements, checked for serviceability, and faults are rectified and reported before work begins.
  • 1.5 Material quantity requirements are identified and calculated according to plans, specifications and quality requirements.
  • 1.6 Materials appropriate to the work application are obtained, prepared, safely handled and located ready for use.
  • 1.7 Environmental requirements are identified for the project according to environmental plans and statutory and regulatory authority obligations.
  • 1.8 Scaffolding is erected according to job and WHS requirements.
2 Set out and prepare arch work.
  • 2.1 Location of arch is set out on base or footing for stone construction according to job drawings and specifications.
  • 2.2 Wall or columns are constructed according to job drawings and specifications up to level of springing line of arch.
  • 2.3 Supports are designed and constructed for ease of release without jarring stonework.
  • 2.4 Arch centring is raised according to specified height, located level across springing line and crown, and supported according to workplace requirements.
3 Construct arch with regularly cut stone.
  • 3.1 Stones are cut according to job drawings and specifications.
  • 3.2 Pre-cut stones are checked for conformity with job specifications.
  • 3.3 Mortar is mixed according to job specifications and relevant standards as required.
  • 3.4 Central keystone is established and stones are laid to form arch according to job drawings and specifications.
  • 3.5 Regular stone is laid to form courses, and bond is maintained according to job drawings and specifications.
  • 3.6 Stones are cut, or pre-cut stones are used, to complete courses and abut arch stones.
  • 3.7 Joints are made within specified tolerance while maintaining alignment and plumb of stone face.
4 Construct arch with irregular voussoirs forming stepped extrados.
  • 4.1 Voussoirs/wedge stones that are delivered pre-cut are checked for conformity to design and order.
  • 4.2 Keystone of archway is positioned centrally and designed voussoirs are laid around centre to form arch.
  • 4.3 Regular stones are laid where voussoirs are designed to correspond with courses.
  • 4.4 Random regular stones are laid where voussoirs are not designed for regular gauged courses.
5 Construct arch with irregular stones.
  • 5.1 Stones are pre-cut, or set out and cut, to suit shape of designed arch.
  • 5.2 Keystones are laid at crown and other arch stones are laid over centre to form arch to specifications.
  • 5.3 Wall is constructed of random rubble or random squared ashlar to match curved extrados according to arch specifications.
  • 5.4 Joints are made with mortar, with stones selected and matched close to abutting stones, and bond strength is maintained.
  • 5.5 Joints are made to specifications with wall maintained in alignment and plumb.
  • 5.6 Mortar joints are struck and finished according to specifications for finish.
6 Clean up.
  • 6.1 Stonework is cleaned, area cleared of waste, and materials and equipment are removed.
  • 6.2 Waste and unwanted materials are disposed of safely.
  • 6.3 Unused materials are stored or stacked.
  • 6.4 Tools and equipment are cleaned, maintained and stored.
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.
Information may include:
diagrams or sketches
instructions issued by authorised organisational or external personnel
memos
regulatory and legislative requirements
current Australian standards relating to the construction of stone arches
plans and specifications
quality requirements
safe work procedures
safety data sheets (SDS)
signage
verbal, written and graphical instructions, including manufacturer specifications and instructions where specified
work bulletins
work schedules, plans and specifications.
Planningandpreparation may include:
assessing conditions and hazards
determining work requirements and safety plans and policies
identifying equipment defects
inspecting work sites.
Work health and safetyrequirements must comply with state and territory legislation and regulations and project safety plan and may include:
emergency procedures, including extinguishing fires, organisational first aid requirements, and evacuation procedures
hazard control
hazardous materials and substances
personal protective equipment (PPE) prescribed under legislation, regulations and workplace policies and practices
safe operating procedures, including operational risk assessment and treatments associated with:
concealed services (water, power and gas)
lighting
restricted access barriers
traffic control
working at heights
work site visitors and the public
working in proximity to others
use of firefighting equipment
use of tools and equipment
workplace environmental requirements and safety.
Toolsandequipment may include:
chisels
concrete mixers
gin poles
hammers
hand saws
masonry saws
measuring tapes and rules
mortar boards
power leads
power saws
shear legs
shovels
spirit levels
squares
straight edges
string lines
trowels.
Qualityrequirements may include:
attention to specifications of work
control of handling procedures
finishing of stone surfaces
quality of materials
relevant regulations, including:
Australian standards
internal organisational quality policy and standards
manufacturer specifications where specified
workplace operations and procedures.
Materials for arches:
may include:
granite
limestone
marble
sandstone
may be:
ashlar
pre-cut stones
regular
random regular
coursed
uncoursed.
Environmentalrequirements may include:
clean-up management
dust and noise control
vibration management
waste management.
Statutoryandregulatoryauthority includes:
federal, state and local authorities administering applicable Acts, regulations and codes of practice.
Arches may be designed for walls of:
regular gauge
random regular
random rubble.
Joints in stone arches may be:
cement mortar
dry.
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 simulated workplace setting. Assessment shall be while tasks are undertaken either individually or as part of a team under limited supervision.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
A person should demonstrate the ability to build two different types of stone arches and provide evidence of:
complying with work health and safety requirements applicable to workplace operations
complying with organisational policies and procedures
selecting and using tools and equipment to carry out arch construction process
applying organisational quality procedures and processes within the context of constructing stone arches to walls or columns
adopting and using safe and effective procedures to set out and set up arch centre to specification
giving particular attention to support of centre and method of lowering when arch is complete
identifying and, where applicable, marking each cut stone for arch location
using safe and effective procedures to handle and place each stone
forming arch to specification and, where applicable, applying mortar to joints
identifying typical faults and problems that occur and taking necessary action to rectify them
communicating with others to ensure safe and effective workplace operations
completing arch construction, including finish to specifications.
Context of and specific resources for assessment
Assessment of this unit:
must be in the context of the work environment
may be conducted in an off-site context, provided it is realistic and sufficiently rigorous to cover all aspects of workplace performance, including task skills, task management skills, contingency management skills and job role environment skills
must meet relevant compliance requirements.
Resource implications for assessment may include:
drawings and specifications relevant to proposed activity
hand and power tools, plant and equipment appropriate to construction processes
materials relevant to proposed activity
scaffolding appropriate to construction processes
site location for proposed activity.
Method of assessment
Assessment for this unit must verify the practical application of the required skills and knowledge, using one or more of the following methods:
direct observation of tasks in real or simulated work conditions
questioning to confirm the ability to consistently identify and correctly interpret the essential underpinning knowledge required for practical application
review of relevant authenticated documentation from third parties, such as existing supervisors, team leaders or specialist training staff.
Guidance information for assessment
This unit could be assessed on its own or in combination with other units relevant to the job function.
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.
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.
Replaces
State Code National Code Title Type
N0444 BCG3056A Construct stone arches Unit of competency
Replaced By
State Code National Code Title Type
OCP42 CPCCST3017 Construct stone arches Unit of competency
State Code National Code Title Type
J786 CPC32313 Certificate III in Stonemasonry (Monumental/Installation) Qualification