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with three layers of reinforcement. To allow proper placement in these congested sections, shotcrete was applied in three 12 in. (300 mm) lifts with a scratch finish on the first two layers and a rubber float final finish. Frank E. Townsend III is the East Coast Region Manager for Superior Gunite. He is a civil engineering graduate of Worcester Polytechnic Institute, Worcester, MA, and received his master’s degree from the University of Missouri, Columbia, MO. Townsend comes from the U.S. Army Corps of Engineers and has been running Superior’s East Coast operations (predominantly New York, New Jersey, Connecticut, and Boston, MA) for 4 years. Townsend is an active member of ACI Committee 506, Shotcreting; a member of ASA; and currently serves on the ASA Board of Directors. 2015 ENR top 20 under 40. Dennis Rubi is a Project Engineer for Superior Gunite. He is a civil engineer graduate of California State University, Long Beach, CA. Rubi comes from the County of Orange in Newport Beach, CA, as a Junior Engineer, and has been with Superior’s East Coast operations as a Project Engineer for 1 year. Rubi is a member of the American Society of Civil Engineers. Honorable Mention Project Name The 55th Street Ventilation Facility Project Location Manhattan, NY Shotcrete Contractor Superior Gunite* General Contractor Schiavone Construction Co., LLC, and John P. Picone, Inc. Architect/Engineer New York Metropolitan Transportation Authority Capital Construction (MTACC) Material Supplier/Manufacturers Tec Crete Transit-Mix Corp. Lab Tectonic *Corporate Member of the American Shotcrete Association Fig. 2: Overhead arch—lower panel being built up. Note the BA anchors and injection tubes displaying the depth of the concrete section Fig. 3: Working on final panel—heat presented a challenge, requiring ventilation and close attention to curing Fig. 4: Final arch structure shotcreted in layers due to thickness Shotcrete • Winter 2016 39


2016WinterShotcreteEMag
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