Tim McCarthy P.E. is pleased to announce the completion of the engineering contract for this central Arizona retailer. "The client is placing new HVAC equipment on the roof to provide enhanced customer experience as well as capture the energy savings possible with today's equipment", said the engineeng manager. "We performed onsite field measurements of the existing structure because of the unavailability of as-built drawings. Then we analyzed the structure for the new equipment loads. Then we recommended alternative locations to provide the best overall economy for the client."