Safe work method statement - Landscaping - Construction of rock retaining wall
Construction of rock retaining wall
Boulder or rock retaining walls are gravity walls, and generally require very little or no special footings.
- The nature and type of ground or soil to be retained shall determine the height and design of the rock retaining wall.
- A retaining wall having a height greater than 1 metre is required to be engineer designed.
- Earthmoving plant and equipment is a quick method by which to handle rocks and construct a rock retaining wall.
Hazards and risks
Hazards associated with the construction of a rock retaining wall using earthmoving plant and equipment would include but not be limited to:
- Excavation of live electrical services where not identified;
- Damage to earthmoving plant where persons are not instructed as to the control measures to be implemented to eliminate or minimise risk;
- Persons struck by earthmoving plant when constructing wall;
- Death or serious injury to persons where earthmoving plant works closer than a 1:1 ratio when placing rocks at a height;
- Collapse of retaining wall where each course is not backfilled and compacted;
- Collapse of wall where a batter/slope is not incorporated in its design;
Safety procedure includes
Control measures to eliminate or minimise the risk of death, injury or illness to persons are addressed in the safe work method statement as per the following sections.
- Consultation with employees.
- Generation of hazards.
- Job preparation and planning.
- Operation of plant within close proximity of overhead services and power lines.
- Operation of plant within close proximity of underground services.
- Operation of faulty or defective earthmoving plant.
- Altering or modifying earthmoving plant.
- Attachments fitted to earthmoving plant for the handling of rocks.
- Pre-operational inspection of plant and equipment.
- Interpreting information on a data plate or load chart for earthmoving plant.
- Set out of rock retaining wall.
- Traversing and movement of earthmoving plant when constructing a wall.
- Construction of rock retaining wall using earthmoving plant.
- Manual handling issues.
- Personal protective equipment requirements.
- Training requirements.
- Housekeeping requirements.
- Failure to monitor controls.
- Risk matrix and descriptors.
- Additional hazards, risks and controls.
- Approval and change management form.
- Sign-off for construction of rock retaining wall.
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