Vacuum Lifting Technology Lands on White House Steps
National Park Service (NPS) 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, in Washington, DC. 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 US$1 million ($1,28 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), said a material handling solution that incorporated a Vacuworx MC Series Vacuum Lifting System proved advantageous as crews pulled 2 base stones weighing approximately 1,100 kg 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 25 cm long, 18 cm deep and 50 cm wide. The 4 new landing stones are 335 cm long, 18 cm thick and 183 cm wide. Ms. Gordon worked directly with Vacuworx to rent a MC 5 lifter and 3 custom pad assemblies. The carrier equipment was rented from Extreme Steel & Rigging, based in Warrenton, Virginia. “We’re moving, fitting, lifting, spreading the mud and laying it down,” said Jessica Gordon. “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 US$3.4 million ($4.3 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.
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,” said Ms. Gordon. “It’s enjoyable to be part of making history.”
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