
Spring Valley Emergency Sewer and Stream Repair
Fairfax County, VA
Project Details
Rice was called in for an emergency sewer rupture project along Spring Valley Creek. The sanitary pipe ruptured and time was of the essence to repair both the pipe and stream by re-engineering the area, redesigning the sanitary pipes to avoid any future issues.
Conventional survey methods were used to collect topographic features for creating a 3D map. Storm and sanitary sewer features within the project limits were also surveyed, providing information on rim elevations, pipes, pipe inverts, pipe connectivity, and pipe material. Additionally, freestanding trees within the survey limits were located and labeled with their basic names (oak, pine, maple), along with tree size (DBH) and canopy size, helping the design team minimize construction impacts to homeowners trees. A digital terrain model (DTM) with one-foot contours was created using three-dimensional data collected by conventional methods. The crews had to work around construction teams that were making temporary repairs to the pipe.
