The three Denver International Airport Concourse Expansions are similar in all aspects of our site utility scope. The objectives were to provide water services, sanitary sewer services and roof drain extensions. The most complex utility installment was the water main extensions and services. The water piping at DIA requires welded steel pipe and fittings. Numerous water shut down coordination’s were required with expediting work of the upmost importance. Daily challenges included locating and potholing existing utilities and often adjusting line and grade to accommodate. The sites are always congested with all trades and coordination with the joint ventures, City inspectors and other subcontractors is a constant part of accomplishing quality work and schedule.