Underground Construction Technology International Conference & Exhibition

This successful project involved the rehabilitation of a 100-year old 90" diameter brick storm sewer beneath a new building under construction in a commercial area of Washington, DC. The project overcame numerous challenges including: no allowed flow bypass; tidal influenced brackish backwater; limited site access and lay down area; lining around a short radius curve; and confined space and storm inundation issues. A grouted-in-place lining system (GIPL) was selected to provide increased structural stability, a water tight and corrosion resistant lining and improved flow capacity.