Presentation - drbfconferences.org

Manhattan Tunnels CM009/019Excavation Scope By Contract38th St. Air PlenumGCT 1 & 2 West CavernGCT 1 & 2 East Cavern44 4 4 4 4 4UPPERLEVEL50th St. Air PlenumCaverns & TunnelGCT 3 WyeCavern WestGCT 3 WyeCavern EastGCT 3Crossover55th St. AirPlenum CavernTBMSELI(EB)Robbins(WB)(ft)(ft/dUpper Drive#1 5,665 5,665 100% 30 fUpper Drive#2 2,894 0 0%Lower Drive#1 3,797 0 0%Lower Drive#2 3,077 0 0%Total SELI 15,432 5,665 36.71%Upper Drive#1 7,650 7,650 100% 39 fUpper Drive#2 1,439 1,439 100% 66 fLower Drive#1 5,386 0 0%Lower Drive#2 1,434 0 0%Total Robbins 15,909 9,089 57.13%Grand TotalDrivesDriveLengthWB (Robbins) ProgressEB (SELI) ProgressTo Date (ft)%Complete31,341 14,754 47.1%CompleteActiveFutureAvProdu38th StreetGCT 1 & 2 West Cavern43rd StreetGCT CavernWest50th StreetGCT 4 WyeCavern West55th Street55th St. Air PlenumCavern59th StreetN63rd StreetGCT 5 WyeCavern WestCompleted on 10/14/10 GCT 1 & 2 East Cavern38th St. Air PlenumT301 (SD 1) LOWERLEVEL1BWBGCT CavernEastT302 4B 2B(SD 2) 2AEBT303 T304 (RD 2) 1A(RD 1) GCT 4CrossoverGCT 4 WyeCavern East50th St. Air PlenumCaverns1BWBGCT 5 WyeCavern EastEB1ATBMAssemblyChambersT401 (SD 3) 3BT402 (SD 4) 4BT403 4A(RD 3) 3AT404 (RD 4) EB Section Cavern Through GCT WB Cavern Cavern 3B 3ASection Thru Approach TunnelsMTA Capital Construc1on 21