PHOTO: AERO PHOTO MATERIAL HANDLING SLIPFORM SILOS INDUSTRIAL CONSTRUCTION ENGINEERING REPAIR AND RENOVATION The Borton Team salutes YPS for an impressive, on budget, on schedule project! John E. Kretzer, CEO www.borton.biz 620-669-8211 4 – July/August 2013 — The South Carolina Construction News Consulting were called in to design the tower’s concrete shell. “Being on the coast there is also the issue of winds,” McGarr said. “Borton had a big challenge here because the tower had to be designed to withstand a double whammy – a possible earthquake coupled with a coastal hurricane, with potential wind loads of 150 mph.” Joe Bleger, sales representative for Borton, says the tower was difficult, both to design and construct. “This structure is unusually tall for the industry. While there may be smokestacks for facilities like power plants to greater heights, this is a manufacturing tower with multiple floors.” Bleger says the design requirement called for a sway limited to one and a half inches from the ground to the top, which he calls “a tough tolerance to maintain and design into the structure.” “The tower required a rigid reinforcing structure, which was driven as much by seismic conditions as wind loads so it is heavier in terms of pounds per cubic ft than a typi- cal slipform.” The concrete tower, designed as a 14-story structure with steel inlays as flooring, presented other challenges. “We are using a crane to lower steel, starting at the first floor of the tower and then we build our way up,” says Mc- Garr. “To allow for this, the tower had to remain uncapped and the combination of a wet winter and wet spring meant many days we couldn’t work.” Despite the delays, subcontractors have been able to step up their schedules when the weather is good for con-