Demanding deadlines leave a natural opening for omissions or errors to even the most thought-out design plans. After many hours of excruciating drawings and calculations, engineering designs come to fruition and are assigned to the job shop. Accomplishment throughout the engineering department is felt until one question arises from the shop floor, “how will you lift your design?” This question has caused the blood to quickly exit many engineers’ faces and sickness to be felt. All feelings of loss would have been avoided if the design of the lifting points and the proposed lift plan were not excluded.
In most designs requiring lifting or rotation applications, hoist rings, which are engineered lifting points, are readily available for most applications with working load limits ranging from 250 lbs. to 500,000 lbs. Hoist rings are engineered so that they swivel 360 degrees and pivot 180 degrees. Hoist rings are a natural choice for designs that require lifting points because hoist rings are designed to be threaded into a tapped hole or used in a thru-hole application with a nut and washer. Also, hoist rings are available to meet all standards of ASTM B30.26, which includes requirements such as a 5:1 design factor. The past times of “homemade” lift points are now over with such clear standards relating to safety in the workplace and devices related to overhead lifting.
ADB® is a manufacturer of hoist rings and has an engineering staff that specializes in customized engineered lifting point designs.