Summary
The work includes Temporary erosion and sediment control measures, Trenching, excavation, shoring, dewatering, bedding, backfill, and compaction for repair of an existing 48" TFI pipe section and 48" SE pipe section. A portion of the area has been previously excavated by the Owner to diagnose the needed repairs, Additional pavement demolition as necessary to facilitate the work, Demolishing an existing 48" TFI pipe section and two (2) existing couplings on either side of an existing elbow, Demolishing two (2) existing 48" SE pipe couplings on either side of an existing 90-degree elbow, Furnishing and installing a new 48" TFI pipe section, flexible rubber connector, two (2) couplings, and associated restraints, Furnishing and installing two (2) new 48" SE couplings and associated restraints. Note that the duration of the 48" SE pipe repair shall not exceed a 24-hour period between removal of the pipe couplings and elbow and installation of the new couplings and replacement of the elbow, Removing and reinstalling an existing 48" TFI elbow and 48" SE elbow to facilitate installation of the new pipe section and couplings, Removing mortar coating from the existing 48" TFI and 48" SE piping and elbows to facilitate installation of the new couplings and restraints, Fabricating and welding U-shaped plates to the existing 48" TFI and 48" SE piping and elbows for restraint of the couplings, Enlarging the pipe penetration at the existing Recirculation/Bypass Flow Control Structure to facilitate installation of the new flexible rubber connector, Removing portions of the existing screen channel sidewalls and floor grout in the Recirculation/Bypass Flow Control Structure to extend the new 48" TFI pipe section past the interior face of the structure wall, Remove and reset the existing electrical vault near the east side of the Recirculation/Bypass Flow Control Structure, Filling under the existing stairs along the east side of the Recirculation/Bypass Flow Control Structure, Constructing a new dumpster pad, furnishing and installing a new area drain for the pad, and connecting piping between the area drain and Recirculation/Bypass Flow Control Structure, Prepare subgrade and place asphalt pavement where the asphalt has already been removed by the Owner and any other areas where asphalt is removed by the Contractor to facilitate the Work.
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