Elements and Performance Criteria
- Prepare for work.
- Work instructions, including plans, specifications, quality requirements and operational details, are obtained, confirmed and applied from relevant information to determine the required brick and blocklaying tasks.
- Safety (OHS) requirements are followed in accordance with safety plans and policies.
- Signage and barricade requirements are identified and implemented.
- Plant, tools and equipment selected to carry out tasks are consistent with job requirements, checked for serviceability, and any faults are rectified or reported prior to commencement.
- Material quantity requirements are calculated in accordance with plans, specifications and quality requirements.
- Materials appropriate to the work application are identified, obtained, prepared, safely handled and located ready for use.
- Environmental requirements are identified for the project in accordance with environmental plans and statutory and regulatory authority obligations, and are applied.
- Set out first course.
- Construct wall to arch level.
- Mortar mix is prepared and bricks/blocks are laid to form wall to set out.
- All work is carried out to specifications and standards.
- Gauge of abutting walls is maintained within standard tolerance at each course level.
- Plumb and alignment of vertical wall face are maintained.
- Bricks are cut.
- Bricks/blocks are laid level and to line over length of wall.
- Abutment jambs/piers are laid vertical up to springing line.
- Bricks/blocks are laid in stretcher bond to springing line of arch with perpendicular joints maintained in vertical line.
- Construct arch centre.
- Set up arch centre.
- Height to springing line is determined and height to crown of arch is confirmed to be within standard tolerance.
- Height of toms and wedges or adjustable metal props are determined to set up and support timber arch centre.
- Supports are adjusted to ensure arch centre is level at right angles to wall face and level across springing line.
- Props, toms, packers and wedges are located for easy removal.
- Position of central key brick/block is established for gauged arch and tape used to mark gauge.
- Cut and lay bricks/blocks to form arch.
- Bricks and blocks are cut and laid on centre to form arch to specifications.
- Joints are maintained to equal size and parallel on the extrados of an arch.
- Same size wedge shape is maintained on face.
- Centreline of key brick/block wedge is maintained through vertical centre line of arch.
- Even joint thickness is maintained around extrados for cut brickwork and blockwork.
- All bricks are cut and laid to maintain even joints.
- All joints are struck evenly to depth and shape to specifications.
- Clean up.
- Work area is cleared and materials disposed of, reused or recycled in accordance with legislation, regulations, codes of practice and job specification.
- Plant, tools and equipment are cleaned, checked, maintained and stored in accordance with manufacturer recommendations and standard work practices.