Stormwater Design


Alpha & Omega Group assisted Gontram Architecture in redesigning a portion of the existing storm drainage system at Whole Foods in Asheville, NC. The goals were to resolve stormwater and sanitary sewage cross contamination, eliminate water intrusion into the building, and properly discharge runoff offsite.

Trash compactors had been placed in an area that had previously been a loading dock with trench drains. Surface runoff from the area and leakage from the trash compactors entered the trench drain which discharged into an above-ground stormwater junction box. The surface runoff was piped along a retaining wall to an unknown location that parallels a local street. The building was also experiencing water intrusion from parking lot surface runoff and downspouts discharging along the front and side of the building.

The team determined existing stormwater runoff patterns and created best solutions to capture and control the runoff. The design redirected the trash compactor trench drain to an existing grease trap, added a roof canopy to cover the compactors, and installed a new piped stormwater system on Marcellus Street and connected it to an existing system. To prevent water intrusion, they provided a site gradation plan for the concrete sidewalks and added a slot drain and french drain connected to the existing system onsite.

The project was reviewed and approved by the City of Asheville Development ordinance and the Metropolitan Sewerage District requirements for construction.


Relevant Images

 
 

Similar and Related