Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

AHCLSC202A Mapping and Delivery Guide
Construct low-profile timber or modular retaining walls

Version 1.0
Issue Date: May 2024


Qualification -
Unit of Competency AHCLSC202A - Construct low-profile timber or modular retaining walls
Description This unit covers the process of constructing low-profile timber or modular retaining walls and defines the standard required to: plan and prepare for construction; mark out the site and assemble materials; construct footings and place reinforcing; carry out wall construction; clear up the site and dispose of waste.
Employability Skills This unit contains employability skills.
Learning Outcomes and Application This unit applies to the process of constructing low profile timber or modular retaining walls in landscape settings and involves working under routine supervision with intermittent checking. Responsibility for some roles and co-ordination within a team may be required.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.
Prerequisites/co-requisites
Competency Field
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Plan and prepare work
  • Personal Protective Equipment (PPE) and clothing is selected, used and maintained.
  • Work instructions relating to constructing the retaining wall are interpreted and confirmed with the supervisor.
  • Tools and equipment are prepared and used according to the supervisor's instructions.
  • Manual handling and other Occupational Health and Safety (OHS) hazards are identified, risks assessed and reported to the supervisor.
  • Services are located according to site and construction
  • The quantity and quality of materials are checked to ensure they conform to the requirements of the job plans.
       
Element: Mark out site for retaining wall
  • The position of the retaining wall is marked out according to site and construction plans.
  • The location and depth of excavations are determined from site and construction plans.
  • Profiles are established to conform to the tolerances designated by the supervisor and/or site and construction plans.
  • Survey benchmarks are established.
       
Element: Prepare footings according to industry standards
  • Foundations for the retaining wall are excavated to depth and dimensions according industry standards.
  • Soil and waste material are removed and stockpiled to ensure a safe working area.
  • Reinforcing and/or steps in the excavated site are located and positioned according to industry standards.
  • Pegs or levels are positioned to maintain even depth and horizontal plane to the top of footings.
  • Footings are placed, consolidated and finished to determined levels, to ensure coverage of reinforcement as necessary and according to industry standards.
       
Element: Prepare and install retaining wall components
  • Components for installation are prepared and laid out.
  • Components to be cut are marked out to length and/or shape and cut accurately to the requirements of profiles already established.
  • Drainage media is installed according to supervisor's instructions.
  • Base layer of retaining wall is constructed to a point above the top of the drainage media and weep holes are formed where indicated.
  • Fill material is back-filled and compacted behind base of retaining wall.
  • Retaining wall components are constructed to dimensions, profiles and levels as outlined in the specified site and construction plans and/or according to supervisor's instructions.
  • Capping to top of retaining wall is set to specified levels with a tolerance appropriate to the style of capping.
       
Element: Clean up site and store tools and equipment
  • Soil and waste material from the site is disposed of or recycled to minimise damage to the environment.
  • Unused construction materials are stored and stacked for future re-use according to supervisors instructions.
  • All tools and equipment are cleaned and stored according to supervisors instructions.
       


Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

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:

plan and prepare for construction

mark out the site and assemble materials

construct footings and place reinforcing

carry out wall construction

clear up the site and dispose of waste.

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.

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

Required skills

read and interpret site and construction plans

calculate the amount of materials required and accurately mark out the area to be retained

sort soil and waste material from the excavation site in an environmentally aware and sensitive manner, such as sorting it into organic, inorganic and recyclable piles

use literacy skills to follow sequenced written instructions and record information accurately and legibly

use oral communication skills/language competence to fulfil the job role as specified by the organisation including questioning, active listening, asking for clarification and seeking advice from supervisor

use numeracy skills to estimate, calculate and record routine workplace measures

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

Required knowledge

different construction materials for retaining walls

construction approaches and methods

OHS responsibilities of employees

safe lifting practices for carrying large and heavy components

the environmental impact of soil disturbance when excavating an area to be retained and the environmental effects of altering water flow when installing retaining walls, with or without drainage media

methods of disposing of soil and waste materials in order to minimise damage to the environment

Building Code of Australia relating to constructing retaining walls.

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

Retaining walls may include:

all types of low [<900mm] retaining walls using timber and modular concrete units.

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Personal Protective Equipment (PPE) and clothing is selected, used and maintained. 
Work instructions relating to constructing the retaining wall are interpreted and confirmed with the supervisor. 
Tools and equipment are prepared and used according to the supervisor's instructions. 
Manual handling and other Occupational Health and Safety (OHS) hazards are identified, risks assessed and reported to the supervisor. 
Services are located according to site and construction 
The quantity and quality of materials are checked to ensure they conform to the requirements of the job plans. 
The position of the retaining wall is marked out according to site and construction plans. 
The location and depth of excavations are determined from site and construction plans. 
Profiles are established to conform to the tolerances designated by the supervisor and/or site and construction plans. 
Survey benchmarks are established. 
Foundations for the retaining wall are excavated to depth and dimensions according industry standards. 
Soil and waste material are removed and stockpiled to ensure a safe working area. 
Reinforcing and/or steps in the excavated site are located and positioned according to industry standards. 
Pegs or levels are positioned to maintain even depth and horizontal plane to the top of footings. 
Footings are placed, consolidated and finished to determined levels, to ensure coverage of reinforcement as necessary and according to industry standards. 
Components for installation are prepared and laid out. 
Components to be cut are marked out to length and/or shape and cut accurately to the requirements of profiles already established. 
Drainage media is installed according to supervisor's instructions. 
Base layer of retaining wall is constructed to a point above the top of the drainage media and weep holes are formed where indicated. 
Fill material is back-filled and compacted behind base of retaining wall. 
Retaining wall components are constructed to dimensions, profiles and levels as outlined in the specified site and construction plans and/or according to supervisor's instructions. 
Capping to top of retaining wall is set to specified levels with a tolerance appropriate to the style of capping. 
Soil and waste material from the site is disposed of or recycled to minimise damage to the environment. 
Unused construction materials are stored and stacked for future re-use according to supervisors instructions. 
All tools and equipment are cleaned and stored according to supervisors instructions. 

Forms

Assessment Cover Sheet

AHCLSC202A - Construct low-profile timber or modular retaining walls
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:

Assessment Record Sheet

AHCLSC202A - Construct low-profile timber or modular retaining walls

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: