s kele c ore TM Peosta, Iowa—City officials loved everything about the white fabric ductwork in its 84,000-square-foot Peosta Community Centre except the occasional “popping” sound it made while rolling out and inflating during HVAC equipment start-up. The noise didn’t matter in active athletic areas, but the “pop” was distracting in the quiet zones such as the 800-square-foot conference room and the Kid’s Zone during naps, according to Kevin

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