Northeast Ohio Medical University authorized KS Associates to evaluate an existing storm sewer system that was backing up during larger storm events. The sewer drains a courtyard and adjacent buildings and was part of an initial phase of campus construction.
KS reviewed existing site conditions and studied existing available drawings for the area where the drainage and flooding were occurring. Based on these reviews, KS determined that recent expansions had redirected drains to a separate existing sewer, which was undersized by taking on the additional drainage area and flow. It was also determined that the architectural drawing showed these relocated and combined sewers, while it did not appear on any site drawing.
It was determined that the original building addition design did not incorporate existing flow and capacities when the storm sewers were relocated and combined. The storm sewer under a building expansion was tied into an existing storm sewer. The new combined flow then exceeded the capacity of the original storm sewer causing backups and drainage issues.
KS’s design included new trench drains in patio areas, additional storm sewer, and replacing and upsizing storm sewers to provide the necessary capacity. The new work in the courtyard now discharges across the parking area to a stormwater basin. This new storm sewer and additional drainage improvements provide the necessary capacity to accommodate the University’s current needs.
The KS team prepared plans and assisted the University with bidding and contract administration.
KS has also provided surveying services to the University under separate contracts. KS performed a boundary survey for the entire campus. The survey included 53 acres of land adjoined by residential and rural undeveloped land. Topographic surveying and mapping of the campus was also provided as part of the deliverable. The topographic mapping was a combination of aerial photogrammetric mapping and field surveying, including research of the University’s utility records and mapping of existing subsurface utilities. After completion of the initial survey, a boundary survey of an adjoining 49-acre parcel was performed for an acquisition by the University.