GHTD IFB #01-026 Roof Drain Line Repair At Hartford Union Station (Re-Bid)

Repair the existing roof drain line system. The primary scope of work will consist of replacing and rerouting the existing storm drain lines with new drain lines and the addition of secondary drains. At the roof level, new secondary (emergency) overflow drains will be installed. At the attic level, existing vertical drain lines will be cut and capped, and new drain lines will run into the lower floors, enclosed in a new chase. At the first-floor level, there will be limited demolition of the masonry and brownstone to install two emergency overflow outlets, one at each of the vestibules to the side of the great hall. The primary drains will continue below grade, one vertical line at each of the vestibules, and will connect at a new manhole below the sidewalk. Downstream of the new storm manhole, the existing drain line that connects to the gully brook storm sewer will be removed and replaced with a new pipe. All drainage work outside of the building will involve demolition of the concrete sidewalk panels and pavers and roadway asphalt to install new pipe. The hardscaping of the site will be restored to the existing conditions.