Colonial Terrace

Rosslyn, VA

This project consisted of a new nine-story luxury condominium with a post-tensioned, reinforced concrete structure incorporating an underground parking garage. Work also included excavation, extensive sheeting and shoring and all site utilities. Due to the topography of the existing site, the mass excavation included a 50 foot cut with internal bracing. McCullough assisted the architectural/engineering team in redesigning the retaining walls and planned to brace them with the building frame which added saleable area and saved the owner $300,000.