10 Crane Super Lift Ballet

This single 703,000 lb (351 Tons) lift of structural steel using Twin-Path® Extra Slings with CornerMax® Pads and Shackle Pin Pads for protection, established a new record. This is the heaviest lift using High Performance Synthetic Slings and Synthetic Pads. The patented products involved are SLINGMAX® Solutions sold by the Lorton, Virginia plant of SLINGMAX. The work was performed by Pinnacle Erectors of Pinnacle, North Carolina using ten cranes supplied by W. O. Grubb, Inc.

The job site was the Dulles International Airport outside of Washington, DC and the structure erected is an airplane hanger roof support. The dimensions of the steel lifted in one piece were 50 meter (165′) wide by 61.5 meters (202′) long. The area of steel is approximately 75% of a football field. The entire structure was fabricated on the ground for safety and ease of assembly.

The Twin-Path® Extra slings consisted of the following: 
6- TPXC 12,500 x 35′ with K-Spec® Core Yarn 
6- TPXC 12,500 x 15′ with K-Spec® Core Yarn 
8- TPXC 7,000 x 35′ with K-Spec® Core Yarn 
1- TPXC 7,000 x 15′ with K-Spec® Core Yarn 
1- TPXC 5,000 x 14′ with K-Spec® Core Yarn

In addtion 70 CornerMax® Pads were supplied to ensure correct use of the sling and to prevent any sling damage during this lift.

Also, 6 Shackle Pin pads to fit 85 ton shackles were provided.

The edges of the heavy steel beams would normally preclude the use of synthetic slings because of the danger associated with cutting. However, the miracle of the CornerMax® Product that softens contact and the lightweight but strong Twin-Path® Extra slings enable the workers to perform their rigging tasks quickly and safely.

The heaviest Twin-Path® Extra slings weighed 100 lbs replacing wire rope slings that would have weighed 745 lbs. Total rigging weight was reduced by 10,000 lbs using the SLINGMAX® Innovations instead of traditional steel products. Wire rope slings would have required several days to connect, many extra workers, and at least one extra crane.

Connection of the Twin-Path® Extra slings, and CornerMax® Pads to lift the load required six people working for three hours. Two Pinnacle Riggers worked each side of the load with the Virginia SLINGMAX® Product advisors, Selina Kochel and Pauline Scites.

This project is an example of a rigging ballet made possible by the coordinated efforts of the people involved to synchronize the rigging and movement of the ten cranes. Everyone involved should be proud of this accomplishment.

Everyone should realize this is a novel and futuristic way to construct large areas of steel structure on the ground and then lift the entire assembly into place.

Visit Unirope’s website for more project descriptions like this one.

Get the free newsletter

Sign up for news, trends and equipment for sale in the lifting and rigging industry.
By signing up you agree to our Terms of Use and Privacy Policy. You may unsubscribe at any time.

Latest Products For Sale

Type Description
Equipment National Brand - Used 5x7 and 6x12 Dies - All dies meet specifications - Various…
Equipment 100 Feet of Steel Framing • Last four sections of pre-owned 1.3 mil test bed…
Equipment 300K – 62 ft. PTM SATEC • Hydraulic guards • 62’ overall length • 6’…
Equipment 100K x 40 ft. Single Range, 7.5HP Manual Control Texmate Readout, 2’ Stroke – Tube…
Equipment Refurbished 500K Lucker Wire Rope Grip • Manual Operated • Front Face Mount • 500,000…

News & Articles