Western U.P. Corps of Engineers Projects
Marquette and Gogebic Counties, Michigan
U.S. Army Corps of Engineers
DLZ was retained by the U.S. Army Corps of Engineers to design the separation of storm water and sanitary sewer flows from the combined sewer system (CSO) in the 8th Addition of the city of Ishpeming, Marquette County and the western half of the city of Wakefield, Gogebic County, Michigan. In order to design the CSO separation, a storm sewer design with hydraulic grade line analysis was prepared. The design calculations were developed based on record drawings, preliminary plans provided by the city’s consultant, utility surveys, and rainfall data.
Multiple alternatives were developed for each community to evaluate. Each alternative presented the most cost-effective solution to the problem. Detailed storm sewer and sanitary sewer design analysis were performed to verify constructability and potential costs. DLZ and the Corps reviewed the various concepts with the local communities and incorporated their comments and concerns into the final concept plans. The Corps and the local communities selected the proposed alternative. The selected alternative was then used to prepare detailed engineering plans and specifications. These plans will be used by the Corps to construct the improvements.
DLZ mobilized survey crews to perform engineering surveying. DLZ completed each of these surveys in record times of two weeks each with daily temperatures ranging from between -20 to -40 degrees plus wind chills.
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