PRIME is currently providing structural engineering services for the replacement of existing rooftop air conditioning units (RTAC) at the Medco Facility in Columbus, Ohio. The original building was constructed in 1957, with a smaller addition cons
tructed on the west side of the facility in 1990. Medco is planning to replace the existing RTAC with new, same size or larger units at 28 locations. The new RTAC units’ capacity varies from 3 tons to 30 tons, with the units to be installed on the existing roof curb so as not to disturb the relatively new roof membrane.
PRIME’s structural engineers visited the site and investigated the roof structures to determine whether the existing structures were adequate to handle the weight
of these new high efficiency RTAC units. The PRIME team conducted its field investigation during off-working hours at night to help minimize disruption to the operations of the facility. The team then reviewed and analyzed the existing structural framing system for new loading.
PRIME prepared and submitted a report with conclusions and recommendations. PRIME also provided structural details around the new roof curb to support
the new unit weights and structural detail drawings for strengthening the existing roof curbs and bar joists and steel beams to support large RTAC units.