A 35-million-dollar structure is now home to the United States Postal Service trucks. Their new concrete maintenance center in midtown Manhattan is clad in louvered and solid aluminum panels and rises four stories high. An external ramp system and rooftop parking increase usable space inside and also limit disruption. Parking is organized to place the heavier vehicles on the ground floor, with lighter duty trucks and cars on the two upper floors and the rooftop.
The engineer, Ewell W. Finley, chose structural concrete to accommodate heavy moving loads on unusually long spans. The oversized 3x3-foot cambered beams are supported by columns nearly 69 feet apart instead of the usual 30 to 40 feet. The heavy beams were placed 15 feet on center, with a 6-inch one-way slab spanning between them. Design strength of concrete for the beams and slabs was 5000 psi, while 6000-psi concrete was used in the columns. The garage was designed to meet federal requirements for Zone 2 earthquake protection. The structural frame was also built to be capable of supporting four more floors as future needs for expansion should arise.