RISK – Lift Failure

For lifts on suspended structures, near embankments, basements or retaining walls or near services, independent engineering certification is mandatory. Refer to Lifting Planning Matrix.

Assessors for ground bearing capacities:

Planning will include the establishment of designated set up areas such as engineered crane pads and hard stands.

Crane pads and piling platforms are Temporary Works and should be managed in accordance with the John Holland Temporary Works Procedure and GMR 7.

The loads imposed on the ground by a crane must include the combined effects of:

• Dead & live loads from the crane mass
• Wind loadings
• Dynamical forces cause by crane movement

When determining the setup location for a crane, consider:

• Proximity to hazards, public and flight paths
• Underground/ overhead and services
• Crane stability and ground conditions, embankments, cavities, retaining structures
• Operator visibility
• Environmental restrictions and wind

The point loading of outriggers must be calculated to ensure the load imparted does not exceed the bearing capacity of the ground.

If the calculation results in a point loading greater than the ground bearing capacity, larger outrigger pads will be required.

Soil bearing capacities when calculating the size of outrigger pads.

Related GMRs

1.F Only operate mobile plant, machinery and vehicles on even, solid ground unless they are designed / assessed as safe to operate on the ground conditions present

7.2 Identify, adequately scope and capture Temporary Works in the Temporary Works register

7.3 Ensure temporary works are planned, assessed and approved by a competent person in accordance with the Temporary Works Risk Matrix

7.C Do not exceed the specified working load limit of temporary works

Related Procedures / Forms

Lifting Operations Procedure

Plant and Equipment Procedure