 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 our 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. This operation required patented, trademarked, and proprietary
products only available from UNIROPE/SLINGMAX® Solutions:
Twin-Path® Extra Slings
Fiber Optic Inspection System
CornerMax® Pads
Shackle Pin Pads
K-Spec® Core Yarn
Covermax® Covers
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