Vacuum lifting technology has made its way to the White House as part of the National Park Service’s historic renovation of the building’s South Portico steps. The $1 million project, which included dismantling Truman-era staircases and installing carefully selected cuts of Missouri limestone, was completed between August 5 and August 30, 2017.
Jessica Gordon, an exhibits specialist with NPS’ Historic Preservation Training Center (HPTC), says a material handling solution that incorporated a Vacuworx MC Series Vacuum Lifting System proved advantageous as crews pulled two base stones weighing approximately 2,400 pounds each, and set a total of 46 new slabs. Each new South Portico step—there are 21 located on the east and 21 on the west—are approximately 10 inches long, 7 inches deep, and 20 inches wide. The four new landing stones are 11 feet long, 7 inches thick, and 6 feet wide. Gordon worked directly with Vacuworx to rent an MC 5 lifter and three custom pad assemblies. The carrier equipment was rented from Extreme Steel & Rigging, based in Warrenton, Virginia.
TECHNOLOGY HELPS INSTALLATION
The MC 5 operates using a self-contained diesel engine. When activated, the system pulls a vacuum between the pad and object to be lifted, providing a powerful positive seal. Eliminating the need for straps, Gordon notes, saved crews nearly 8 hours as she estimates that method would have required an additional 10 minutes per limestone step during the installation process.
The application of vacuum lifting also mitigated the risk of chipping the top-grade material by prying on it with a bucket or fork, she says, and curbed the possibility of damaging an adjacent patio on the South Lawn.
“We’re moving, fitting, lifting, spreading the mud and laying it down,” Gordon says. “All the re-handling; it adds up. With the remote operation, we can safely pick up and maneuver materials without compressors, hoses, or other accessories presenting trip hazards. What really sold us is that everything is self-contained, in one unit.”
Timing of the South Portico project overlapped a remodel of 1600 Pennsylvania Avenue that was facilitated by NPS and the General Services Administration. The $3.4 million project was completed in August and included the replacement a 27-year-old HVAC system along with renovations of the Navy Mess kitchen, West Wing lower lobby, and IT system. According to the White House, these renovation plans had been approved by the previous administration.
Featured Image: National Park Service cites safety and versatility among major considerations when deciding on concrete lifting system manufactured by Tulsa-based Vacuworx to handle recent renovation of South Portico stairways at the White House.
Above: The Vacuworx MC Series Vacuum Lifting System handled each step without straps for easy maneuvering, handling a total of 46 new slabs.
The NPS’ Frederick, Maryland-based Historic Preservation Training Center focuses on maintaining and preserving icons of historical and cultural significance throughout the United States. Gordon says that the agency handles about 35 to 40 projects a year, among its three divisions: Masonry, Woodcrafting, and Carpentry. The scope of its masonry work includes 10 to 15 jobs a year, she says, with the typical project cost ranging between an estimated $50,000 and $400,000. According to Gordon, “Our work is project-based, so the rental option works well for us. Versatility is a major consideration.” Vacuworx Vacuum Lifting Systems were also used by NPS to help rehabilitate the steps that guide visitors to a memorial building at Abraham Lincoln Birthplace National Historical Park in Hodgenville, Kentucky.
The South Portico was originally constructed during the Monroe administration in 1824. New steps, constructed of Missouri limestone with a concrete base, were erected in 1952, during the presidency of Harry S. Truman. Springfield-based Phenix Marble Co. quarried the newly installed limestone. “The NPS has been handling maintenance projects at the White House since 2001,” Gordon says. “It’s enjoyable to be part of making history.”
Founded in 1999 in Tulsa, Oklahoma, Vacuworx engineers and manufactures innovative heavy-duty material handling equipment for the oil and gas, water and sewer, highway and heavy construction, concrete construction, landscaping, and manufacturing industries worldwide.
Vacuworx Vacuum and Hydraulic Lifting Systems can be customized for many applications and lift capacities. Standard models lift a variety of materials including steel pipe (including most types of coating), plastic pipe (PVC, fiberglass, long flexible pipe), ductile iron pipe, concrete pipe, pre-cast concrete slabs, pre-cast concrete culverts, concrete road barriers, saw cut concrete (demolition or rehabilitation), landscape pavers, steel plate and piling, and road plate. Lifters can be attached to hydraulic excavators and backhoes (with or without a coupler system), wheel or track type loaders, cranes, pipe layers, skid steers, forklifts, and knuckle booms and can also be mounted for a variety of in-plant applications. Vacuworx maintains a global inventory available for purchase or rental. Parts, service, and technical support are available 24/7/365 for installation, training, repairs, and troubleshooting. ν
For More Information:
For more information about Vacuworx Vacuum and Hydraulic Lifting Systems, visit www.vacuworx.com.
Modern Contractor Solutions, December 2017
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