Elements and Performance Criteria
- Prepare to lay vaults.
- Liaise with appropriate staff to identify and confirm work requirements.
- Identify, prepare and use personal protective equipment according to workplace policies and procedures, and relevant legislation.
- Select and assemble tools and equipment according to work requirements.
- Check tools and equipment for serviceability and report faults according to workplace policies and procedures, and relevant legislation.
- Identify safety hazards and take corrective action according to workplace policies and procedures, and relevant legislation.
- Install drainage provisions in excavated vault areas according to plan details, workplace policies and procedures, and relevant legislation.
- Install formwork in site according to workplace policies and procedures, and relevant legislation.
- Install sub-base material in site and compact area to specified level and consistency.
- Install waterproof membrane to area as required and according to manufacturer instructions and workplace policies and procedures.
- Cut, place and tie reinforcement to area according to plan details and relevant legislation.
- Apply release agent to formwork according to manufacturer specifications and relevant legislation.
- Mix concrete.
- Calculate volume of concrete required for vaults according to work requirements.
- Determine proportions for concrete mix according to vault strength requirements.
- Determine volume of dry materials to produce final concrete mix and mix to blend all materials.
- Introduce sufficient water to produce a plastic concrete mix after making allowances for damp aggregates.
- Place and finish concrete.
- Check faults and take required corrective action prior to placing concrete.
- Apply release agent to formwork according to manufacturer instructions.
- Conduct concrete slump test to confirm specifications where required.
- Place concrete to designated levels in a manner that avoids segregation of materials.
- Consolidate concrete using approved vibration method according to workplace policies and procedures.
- Screed concrete according to required level.
- Prepare surface to required finish.
- Use appropriate curing agent and method according to manufacturer instructions.
- Clean equipment on completion according to workplace policies and procedures, and relevant legislation.
- Complete installation.