Grove GMK3055 Overturns at Data Centre Site in Farnborough
30 Second Takeaway
A three-axle Grove GMK3055 All Terrain crane overturned at a data centre construction site in Farnborough, southern England. The crane was reportedly set up with its full counterweight and outriggers on mats, with its boom fully extended and raised. A Genie boom lift from the Summit fleet was also struck, and the site structure took much of the impact. No injuries were reported. The cause of the overturn has not been established.
Incident Overview
Farnborough, southern England
A Grove GMK3055 overturned at a new data centre construction site. The crane was reportedly owned by Ridge Lifting Solutions, which was providing lifting support for steelwork designed and manufactured by its sister company, Ridgewell Structures.
The crane was found with its boom extended and raised, and the superstructure slewed over the front. The available information does not establish what caused the overturn.
What Happened
Based on information available at the time of publication:
A three-axle Grove GMK3055 overturned at a data centre construction site in Farnborough.
The crane was reportedly configured with its full counterweight.
Its outriggers were reportedly set on mats.
The five-section boom was fully extended and raised.
The superstructure was slewed over the front of the crane.
The site structure took much of the impact.
A Genie boom lift from the Summit fleet was also struck.
No injuries were reported.
The cause of the overturn remains unknown.
What Is Known
Equipment involved: Grove GMK3055 All Terrain crane
Crane configuration: Full counterweight, outriggers on mats, boom extended and raised
Incident type: Mobile crane overturn
Location: Data centre construction site in Farnborough, England
Additional equipment involved: Genie boom lift from the Summit fleet
Injuries: None reported
Investigation status: Cause not established in the available information
Early Observations
The crane’s reported configuration included a fully extended and raised boom with the superstructure slewed over the front. The available information does not establish whether this configuration, wind, ground conditions, a mechanical issue or another factor contributed to the overturn.
The crane was reportedly using its full counterweight and had its outriggers set on substantial mats. These details do not, on their own, establish that the crane was stable or rule out other contributing factors. The cause remains undetermined.
Why This Incident Was Possible
A mobile crane’s stability depends on its operating configuration, ground conditions, outrigger support, load, boom position and slew direction. Wind can also affect an extended boom, but there is no confirmed evidence that it contributed to this incident.
The circumstances of the overturn have not been established, so no single cause can be identified from the available information.
Industry Reminder
Mobile cranes can be vulnerable to rearward instability in certain configurations. Safe operation depends on following the manufacturer’s instructions for crane setup, boom and superstructure positioning, counterweight, wind limits and preparation for travel.
Operators and site teams should also check that the crane is level, the outriggers are supported on suitable ground, and the work area remains within the crane’s operating limits as conditions change.
Editorial Note
Crane Hub Global reports on crane, access-equipment and lifting-related incidents to support industry awareness and learning.
This article is based on information available at the time of publication. The cause of the overturn has not been confirmed.
How Mobile Crane Overturns Can Be Prevented
Follow the manufacturer’s operating instructions
Use the specified setup and operating procedures for boom position, superstructure slew, counterweight and travel preparation.
Verify ground and outrigger support
Assess ground conditions, confirm the crane is level and use suitable mats or other support as required by the lift plan and manufacturer guidance.
Monitor wind and site conditions
Observe operating limits and stop work if wind or other conditions make the planned configuration unsafe.
Plan crane movements and configuration changes
Ensure operators and site personnel understand the intended sequence for working, slewing, lowering and preparing the crane for travel.
Use trained personnel and clear communication
Crane operators, lift supervisors and ground crews should understand their roles and communicate before changing the crane’s configuration.
