Why this matters
Use this leader guide before crane outrigger setup & ground support work to review the real setup, the controls that need to be in place, and the conditions that should stop the task. A lift can look controlled until the load shifts, the radius changes, the ground settles or communication breaks down. Nobody should be guessing about load weight, rigging, travel path, exclusion zones or who is giving the signal.
A scenario to discuss
During Crane Outrigger Setup & Ground Support, the load begins to rotate or hang differently than expected. A worker moves closer to steady it by hand while the operator is still holding the load. What is the safer reset before the lift continues?
Before work starts
- Confirm load weight, pick points/center of gravity, equipment capacity and rigging configuration before the lift.
- Inspect rigging, hooks, hardware and lifting equipment and remove questionable components from service.
- Walk the load path, landing area and exclusion zone and assign the signal/spotter roles.
- Confirm ground conditions can support the crane and loads imposed by outriggers or tracks.
- Use mats, cribbing or blocking sized and placed for the manufacturer requirements and actual soil/surface condition.
Common failure points
- Starting before the load weight/center of gravity and capacity at radius are understood.
- Allowing people into the fall zone or swing radius because the load “is only moving a little.”
- Continuing after communication, ground support, rigging condition or load control changes.
Safe work sequence / controls
- Confirm ground conditions can support the crane and loads imposed by outriggers or tracks.
- Use mats, cribbing or blocking sized and placed for the manufacturer requirements and actual soil/surface condition.
- Fully deploy or configure outriggers as required for the load chart being used and level the crane within limits.
- Recheck settlement, cracking or movement during operations and stop if support changes.
Stop and reset the plan if...
- Load weight, center of gravity, rigging configuration or equipment capacity is unknown or different from the plan.
- Ground, outrigger support, wind, visibility or communication conditions are not acceptable.
- A worker enters the fall zone, pinch zone or swing radius without the lift being stopped and controlled.
Questions worth asking the crew
- What is the load weight/configuration, and how do we know the equipment, rigging, and attachment points are within capacity?
- Where are the fall zone, swing radius, and pinch/crush areas, and how will people be kept out for the entire lift?
- Who is giving signals, what communication method are we using, and what happens the instant communication is lost?
- What change in ground, wind, rigging, load control, or travel path would make us set the load down and re-plan?
- Has anyone seen a load shift, rigging change or signal break down during a lift? What should trigger an immediate set-down here?
Make it real on the job
Point out the fall zone, rigging connection and signal person before the load leaves the ground.
Close the talk
Before the crew starts, everyone should be able to explain the hazard, point to the control being used today, and name the condition that would make the work stop.
Related authoritative reference
OSHA 29 CFR 1926.1402 - Ground Conditions · Open reference ↗
This is a practical discussion guide, not a substitute for required training, a competent person, permits, manufacturer instructions, employer procedures, or applicable federal/state/local requirements. Adapt it to the actual task and conditions.
