This unit applies to the construction of stone structures and features as a component of landscape project works.

ELEMENT

PERFORMANCE CRITERIA

1. Plan and prepare work

1.1. Plans and specifications are interpreted and clarified with the supervisor.

1.2. The quantity and quality of materials are checked to ensure they conform to design drawings and specifications.

1.3. Tools and equipment are selected and checked for serviceability according to enterprise guidelines.

1.4. Occupational Health and Safety (OHS) hazards are identified, risks assessed and controls implemented.

1.5. Environmental implications of erecting stone structures are identified and reported to the supervisor.

2. Set out and prepare the site

2.1. Services are determined and located from site plans.

2.2. The position of the structure or feature is marked out according to design drawings and specifications.

2.3. Profiles are established to conform to the tolerances nominated within the design drawings and specifications.

2.4. Subsoil is prepared by removing all debris, vegetable matter and topsoil to provide a solid foundation for construction.

2.5. Drainage systems are installed according to design drawings and specifications.

2.6. Sub-base material is placed and compacted to the required finished levels.

3. Construct structure or feature

3.1. Mortar is mixed to determined ratio and appropriate admixes including bonding and colouring agents are added as required, and in accordance with specifications.

3.2. Damp proofing and base course of stone work is laid according to design drawings and specifications.

3.3. Courses of stone work are laid using designated bond/s in a manner that will ensure the viability and stability of the structure, and according to design drawings and specifications.

4. Install stone paving

4.1. Set out and prepare area to be paved according to the site plan.

4.2. The area is excavated to shape, depth and dimensions to sub base level according to industry standards.

4.3. The sub base is trimmed to the designated level and falls, and base material is placed and compacted to the required finished level.

4.4. Bedding material is spread over the area and levelled to the designated level and falls.

4.5. Stone is placed and fitted to accurately fill gaps in the pattern within tolerances nominated within the site plan.

4.6. Edge constraints are installed as required by the site plan.

5. Check quality of work and clean up site

5.1. Quality of finished works is inspected to ensure the standard of the finished structure or feature is in accordance with design drawings and specifications.

5.2. Stone work surfaces are cleaned down in an environmentally safe and sensitive manner.

5.3. Tools and equipment are cleaned and stored according to enterprise guidelines.

Required skills

measure and construct profiles using mathematical techniques

use levelling equipment

use literacy skills to read, interpret and follow organisational policies and procedures, follow sequenced written instructions, record accurately and legible information collected and select and apply procedures for a range of tasks

use oral communication skills/language competence to fulfil the job role as specified by the organisation, including questioning techniques, active listening, clarifying information and consulting with supervisors as required

use interpersonal skills to work with and relate to people from a range of cultural, social and religious backgrounds and with a range of physical and mental abilities.

Required knowledge

comparative environmental implications associated with soil disturbance and the establishment of drainage systems

components of mortar including admixes such as bonding and colouring agents used in the construction of stone structures and features.

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

Critical aspects for assessment and evidence required to demonstrate competency in this unit

The evidence required to demonstrate competency in this unit must be relevant to workplace operations and satisfy holistically all of the requirements of the performance criteria and required skills and knowledge and include achievement of the following:

interpret plans and specifications

prepare the site and install drainage systems

construct stone work with correct mortar ratio

set out base for paving.

Context of and specific resources for assessment

Competency requires the application of work practices under work conditions. Selection and use of resources for some worksites may differ due to the regional or enterprise circumstances.

The range statement relates to the unit of competency as a whole.

Structures and features may include:

the range of stonework construction techniques and equipment, and structures and features including:

edgings

steps

walls

retaining walls

fences

barriers

BBQ and entertaining areas

ornamental garden elements.

Unit sector

Landscape

This unit contains employability skills.