How do you calculate the area of support beneath a crane outrigger?
Simply divide the maximum outrigger load by the allowable ground bearing pressure to determine the pad area you need. Example: Maximum outrigger load = 100,000 lbs. Allowable ground bearing pressure = 3,500 psf. (100,000 lbs / 3,500 psf = 29 ft2 of area).
What should be used to support the outrigger float?
Blocking (also referred to as “cribbing”) is wood or other material used to support equipment or a component and distribute loads to the ground. It is typically used to support lattice boom sections during assembly/disassembly and under outrigger and stabilizer floats.
What guidelines should you follow when using a crane with outriggers?
If a crane has outriggers they should be used on every lift.
What is the difference between outriggers and stabilizers?
Stabilisers and outriggers have many configurations depending on the application and are used to minimise the risk of toppling when the centre of gravity of the combined load and vehicle is outside the support base of the vehicle. Outriggers lift the vehicle’s wheels off the ground while stabilisers do not.
How do crane outriggers work?
When you operate a crane truck, you also operate hydraulic or manual outriggers. Outriggers keep your truck stable during any kind of lift by extending outward and making contact with the ground several feet away from the truck. This provides a solid, stable base by distributing the crane’s load over a larger area.
How is crane load capacity calculated?
Measure geometric components
- The standard calculation for maximum crane capacity is (r)(hC)/100.
- R = Radius between the ground and load.
- hC = Lifting height multiplied by the capacity.
What should be done before operating a crane?
Visually inspect the crane before use. Make sure all loose materials, parts, blocking and packing have been removed from the load before lifting. Remove any slack from the sling and hoisting ropes before lifting the load. Make sure that the lifting device seats in the saddle of the hook.
What stops a crane from tipping over?
Of all crane-related accidents, tipping accidents are the most common. The easiest way to prevent a tipping accident is to never lift more load than what’s stated on the load chart and make sure your crane is set up properly.
Are outrigger pads required?
Posted in Worksite Safety. An outrigger pad is a safety tool that can be used with any equipment that has outriggers, down jacks or stabilizers. It is a must for stability when a piece of equipment – such as a crane – lifts loads or personnel aloft.