After nearly two decades of serving agricultural markets with bunk feeders, bunker silo walls, slats, plus posts and beams, Harley, Ontario-based Stubbe’s Precast Commercial Ltd. entered mainline construction in 2001 with the introduction of hollow core plank. Over the next nine years, the producer added structural wall panels, columns, beams and double tees, the portfolio of which now anchors a…
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At first glance, it would be understandable to assume that little changes over time in the rolling farm hills of Bruce County, Ontario, Canada.
Read MoreSources: Solidia Technologies, Piscataway, N.J.; CP staff
Three recently issued U.S. Patent and Trademark Office patents cover processes and products based on Solidia Technologies’ cement and carbon-curing materials and methods. The U.S. Patents are designated 9,878,951, “Hollow-Core Articles and composite materials, methods of production and uses thereof;” 9,938,189, “Pervious composite materials, methods of production and uses thereof;” and, 9,963,392, “Aerated composite materials, methods of production and uses thereof.”
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As an invention, the hollow-core slab is of mature age, but there are still many improvements that can be made to maximize production quality and efficiency, Finland’s Elematic Oyj contends. Whether it is an old prestressed line or a new plant, the process can be improved by removing production-related bottlenecks, while material consumption can be cut down with advanced software and automation.
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Two Marriott hotels near Orlando’s Mall at Millenia are being built within a single structure as part of a dual-brand hotel concept made possible, in part, by the adaptability of precast. Gate Precast will produce and install 158,841 square feet of 8-in. hollow core precast and 6,156 square feet of 8-in. solid slab structural precast for the project.
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The FloorMES E9 is a hands-on tool for supervising and planning precast floor element production. The automated manufacturing execution system (MES) from Finland’s Elematic Oyj and Wisconsin-based Elematic Inc. optimizes and balances the production plan and schedules; monitors work process against the original plan; and, engineers note, spells an end to manual processes and paper piles that have accompanied hollow core fabrication.
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Giovannetti Community Shelter in Urbandale, Iowa, is constructed with precast wall panels and hollow core roof plank, and has a Federal Emergency Management Agency-rated, 4,500-sq.-ft. safe room designed to withstand 250-mph wind forces and structural impacts. The project, however, had some difficulty coming to fruition. In fact, it first began as an ordinary park shelter among the 75-acre Walker Johnston Park—on a proposed budget that was half of what its community center program required.
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