Elements and Performance Criteria
- 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.
- 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.
- 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.
- 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.
- Clean up site and store tools and equipment