A 13,000 sq. ft. elevated parking deck in center-city Philadelphia received a complete replacement of concrete and metal at the hands of the Concrete and Masonry Division...and a Safety Award for their work from the General Building Contractors Association Philadelphia! Parking decks are high-use structures, so trust the experts at G.C. Zarnas for the replacement or repair of your facility’s parking garage. From sealants to structural repairs, G.C. Zarnas will service all facets of your parking garage, protecting your guests’ safety, as well as your building’s integrity.