How to Use an Outrigger Lorry Crane Correctly: Avoid the Crane Overturning on Site
- Emir
- Jul 17, 2025
- 3 min read
Index
Introduction
Failure to use outriggers correctly is one of the main causes of cranes overturning at construction sites!
Outriggers stabilize lorry cranes when lifting heavy loads. If not used correctly, they can cause serious imbalances and fatal accidents. This article will show you the important steps to use outriggers safely, avoid common mistakes, and when to stop operations for everyone's safety.
What Is Outrigger and Its Function?
Why are outriggers important for crane stability?
An outrigger is a support leg that can be pulled out from the side of a lorry crane . It:
Adding stability to the site
Distribute heavy loads
Prevent the crane from overturning
Without outriggers, the crane can tilt or collapse when lifting heavy loads.
Safety Steps Before Using a Crane
Check before starting work!
Check the ground surface (must be firm and flat)
Make sure the outrigger is not over a drain or soft part
Place a wooden or metal pad under the outrigger
Make sure all outriggers are fully extended and locked.
How to Properly Use Outriggers on Site
Follow this step every time the operation
Parking lorry crane in a flat place
Open the outrigger uniformly left and right
Use hard padding under outriggers
Make sure there is no movement when the outrigger is raised.
Do not lift the load if the outrigger is unstable
Common Mistakes That Can Lead to Misfortune
Avoid these mistakes to save lives
Use an outrigger on soft surfaces
No need for a liner
Failed to fully open outrigger
Lift the load from the wrong angle
Not following crane capacity limits
When Should You Stop Operations?
Danger signs that require immediate attention
Crane starts to tilt
Outrigger sinks into the ground
There is a strange noise during operation.
Bad weather conditions (strong winds, heavy rain)
Immediately stop work and check the situation before resuming operations.
Mandatory Training for Crane Operators
Why professional training is important to avoid accidents
Each operator must:
Takinga crane competency course from CIDB or an accredited agency
Understand outrigger usage SOPs and load capacity limits
Know the emergency procedures if the outrigger fails
Updated with regular training and safety audits
Training is not just a legal requirement – it saves lives.
Did You Know?
7 out of 10 crane collapse cases are caused by incorrect use of outriggers
Data from CIDB and DOSH shows that basic negligence such as not using a liner or unstable outriggers are often the main cause of site accidents.
Conclusion
Outriggers are an important component inlorry crane operations . Use them correctly to avoid avoidable tragedies. Ensure all workers are trained, and follow strict SOPs on construction sites.
Safety is not an option – it's an obligation!
FAQ
What is an outrigger in a lorry crane?
It is an adjustable support leg used to stabilize the crane during operation.
Is it necessary to use a liner under the outrigger?
Yes, the liner is important to prevent the outrigger from sinking into the ground.
Can outriggers be used on tar roads?
Yes, but make sure the surface is flat and strong, and use a pad.
My crane is tilting while lifting a load, what should I do?
Stop operation immediately and check the outrigger and load.
Who is responsible for checking the outrigger?
The crane operator is responsible for ensuring that the outrigger is used correctly before and during operation.
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