Concrete Products

NOV 2017

Concrete Products covers the issues that attract producers of ready mixed and manufactured concrete focusing on equipment and material technology, market development and management topics.

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S NOW MEET ALL November 2017 • 7 GOVERNMENT AFFAIRS WHITE HOUSE The National Park Service Historic Preservation Training Center (HPTC) deployed a lifting system from Oklahoma-based Vacuworx to set 46 new Missouri limestone slabs, topping out at 2,400 lbs., during the recent White House South Portico stairway reconstruction. "With the [machine's] remote operation, we can safely pick up and maneuver materials without compressors, hoses or other accessories presenting trip hazards," says HPTC Exhibits Specialist Jessica Gordon. "Everything is self-contained in one unit." Vacuum lifting elim- inated the need for hoisting and placing the steps and stones by strap, she adds, and also mitigated risk of chipping the limestone pieces. The 10-in. long x 7-in. deep x 20-in. wide steps and 11-ft. long, 7-in. thick and 6-ft. wide landing stones were cut from block quarried at Phenix Marble Co., Springfield, Mo. Based in Fredericak, Md., the HPTC rented the Vacuworx MC 5 lifter and three custom pad assemblies from Extreme Seal & Rigging, Warrenton, Va. Rental options suit the agency, Gordon notes, whose Masonry, Woodcrafting and Carpentry divisions handle 35 to 40 projects a year, typically in the $50,000–$400,000 range. The South Portico project entailed disman- tling of a Truman-era staircase, and overlapped a $3.4 million interior remodeling effort at 1600 Pennsylvania Avenue. Vacuum does Park Service's heavy lifting for steps to 1600 Pennsylvania Avenue New South Portico steps, derived from a southwest Missouri limestone deposit, were set with the MC 5 Vacuum Lifting System. The diesel-powered device (top, right) pulls a vac- uum between lifting pads and objects to be placed, securing a positive seal. The new steps replace similarly composed pieces placed in 1952. PHOTOS: Vacuworx (perspective), National Park Service (vintage) 600 HORSES. S S NOW MEET ALL 600 HORSES. S When it comes to power, there's no replacement for displacement. Which is why Western Star still offers the industry's only available 16-liter engine, the American-built Detroit ™ DD16. ® And when you spec one in a Western Star 4900, you not only get up to 600 horsepower, you get plenty of efficiency, too. Not to mention performance and profitability for years to come. Find out more at

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