Eyebolts can make a rigging job easier, but easier doesn’t mean safer.
An untrained rigger may incorrectly believe he can connect to an eyebolt by any means that work, but it is never that simple.
Eyebolts like all rigging gear, have requirements for safe use. Always follow manufacturer procedures when available, and remember these safety tips.
- When used for lifting, eyebolts must be made from forged alloy steel, not cast iron
- To connect to a load, eyebolts must be strong enough to withstand forces applied
- The shoulder of an eyebolt must be flush with mounting surface
- Shouldered eyebolts must be used when pulling at an angle
- Angular pull must be in the plane of the eye
- Eyebolts must have sufficient capacity; greatest when loaded in the vertical and reduced if pulled at an angle
This Flat Top Luffing Tower Crane can go from horizontal with a 55 meter radius to a minimum radius of three meters in only 90 seconds. The luffing speed is varied by the load sensing hydraulic luffing cylinder.
This near vertical feature is particularly beneficial on crowded job sites. With the jib in this vertical position, the out-of-service radius is less than 10 meters.
It has 12 tonnes lift capacity when dual reeved at 55 meters, and 6 tonnes capacity at 55 meters when single reeved.
Read more about Wolffkran’s 166B on Vertikal.net.
See also, Tower Crane Collision.
Have you ever heard that excuse? Have you ever used that excuse yourself?
Like all unsafe shortcuts, others may look the other way or even applaud your resourcefulness if the job goes well. However, as soon as your resourcefulness turns to disaster, all fingers point toward you.
A forklift is a lever where the counterweight must be greater than the load when the load’s center of gravity (CG) is at the “Load Center on the Forks.” Load center is measured from the fork-face 24, 36, 48 inches, etc. toward the fork tips. Forklift loads must be within the rated capacity and their CG must be over the load center.
Material handling equipment has safeguards built in their design. Just because equipment, like the forklifts in the video, have always been used improperly, it doesn’t rule out the possibility of an accident. One day conditions may change, causing a problem with this seemingly, well-orchestrated job, and a fatal accident can occur. The larger forklift could tip forward because the CG of the smaller forklift plus the weight of the box are beyond its load center. Also, the weight of the smaller forklift may be imposed on its steering mechanism which could damage it.
An average of 40 thousand serious forklift injuries and fatalities occur each year. Don’t be convinced to use a forklift improperly due to the right equipment being unavailable, deadlines needing to be met, or using the excuse that its always been done that way. To be convinced of anything short of properly using a forklift, is to sacrifice the safety of everyone on the job.
Crane Institute of America can teach you how to properly...