Resolution Providing for the letting, for and during the calendar years 2015, 2016 and 2017, of Contracts and for the use of existing Contracts for professional services including planning, architectural, engineering, and real estate services, as well as construction administration, management and inspection services related to the assessment, design, construction and maintenance of the City's infrastructure, buildings and lands as needed by the various Departments of the City of Pittsburgh, and for related engineering and construction services in and for any or all Departments of the City of Pittsburgh, and providing for the payments of the costs thereof.