Commercial Construction & Renovation

MAY-JUN 2016

Commercial Construction & Renovation helps our subscribers design, build and maintain better commercial facilities by delivering content to meet the information needs of today's high-level executives.

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CLEARING THE AIR COMMERCIAL KITCHENS Without a doubt, the market's burgeon- ing indoor air quality (IAQ) problems – a byproduct of the enterprise inside – had to be resolved if the non-proft venue and its 36 vendors were to survive. Years ago, city managers and market executives knew they had a problem, so, gradually, a plan emerged. Wolfe, who joined the market's executive staff in 2013, learned about plans to overhaul the building's ventilation system on his frst day, when his girlfriend demanded he quaran- tine his work clothes when he got home. Engineered solution Of course, the science behind the market's inadequate ventilation was the purview of trade professionals with a language foreign to the market's everyday patrons, with terms like "particulate parts per billion," "IAQ" and "CFMs." Enter Stuart Schlotterbeck, P.E., and IAQ linguist. Schlotterbeck is a senior mechanical engineer for Columbus-based Dynamix Engineering Ltd, the frm chosen by city managers to engineer a solution to the market's IAQ problem. One of the frst decisions made by Schlotterbeck was the specifcation of four, 20-ton Atherion packaged ventilation rooftop systems manufactured by Modine – ulti- mately chosen to be the crown jewels for the market's IAQ improvement project. Next in line were the central exhaust fan and innovative venting and kitchen hoods. They also were to become integral com- ponents to make the whole, an engineered solution built precisely to meet the current and future needs of the expanding market. "Of key importance was the need to for make-up air," Schlotterbeck says. Prior to the renovation, air balance tests for the building proved negative – more air was being exhausted from the building than was supplied from outside. "Net pressurization for the building should be positive," Schlotterbeck says. "Tests confrmed the need for more make-up air." The North Market retroft project came out for bid about two years before actual work began. General temperature control Canal Winchester, Ohio-based General Temperature Control (GTC) – armed with Schlotterbeck's design – submitted the winning proposal during the re-bid process. GTC was chosen to replace the ailing rooftop equipment and to overhaul the ducted venti- lation system within the building. Because the market is in an older building, there was a lot of stuff on the ground. It also was attached to the ceiling, which had to be moved to complete the ventilation work. 96 COMMERCIAL CONSTRUCTION & RENOVATION — MAY : JUNE 2016

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