ACEC-Utah has awarded Psomas the 2017 Excellence in Engineering Award in the Special Projects Category for its work on the Marmalade Library. Completed in February 2016, the $4.8 million project comprised construction of a new Salt Lake City public library and public plazas as part of the Redevelopment Agency of Salt Lake City’s (RDA) development of the Marmalade Block. Psomas provided civil engineering and survey services for the Marmalade Block, which, in addition to the library and plazas, will include retail, office, and residential developments.
Psomas provided design for the library and plaza grading, layout, and infrastructure. Site utilities were designed to account for future Marmalade Block developments. The project provided some unique design challenges. An underground storm water detention system was designed that provided needed storage, was water tight to prevent infiltration of the groundwater, and was sufficiently heavy to prevent the system from “floating”. Future Marmalade Block development will utilize the system. In addition, the site has some significant topography. In conjunction with the RDA, Psomas provided a grading design for the proposed plazas and library that met ADA requirements, provided desired access points to the library and satisfied the architect’s aesthetic requirements.