Unisphere – 1101 Spring Street

The six-story, 121,000 square foot Unisphere represents the third phase of the expansion of United Therapeutics’ (UT) headquarters. When completed in 2018, it will increase office space, add structured parking and 10,000 square feet of retail, and connect directly to UT’s laboratory. The building was designed by EwingCole’s multi-disciplinary team to operate as a net zero site, and LEED certification with the U.S. Green Building Council is in progress.

UT had worked with Schnabel Engineering and later SEDC on several projects over the past 10 years, including the 2013 geotechnical engineering report for this project. Due to this established relationship and our knowledge of the subsoil characteristics of the site and Montgomery County’s Special Inspections program, UT hired us to provide observation and testing services in support of construction by Whiting-Turner. Our involvement encompasses detailed tasks within the major construction activities of sheeting and shoring; shallow foundations and drilled shaft foundations; cast-in-place concrete for foundations; and general earthwork.

Rendering courtesy of EwingCole.