by aqathalmar | Nov 22, 2023
Potomac River Tunnel Contract B Tunnel System Construction Design-Build 38°53’00.8″N 77°02’48.2″W / Washington, D.C., USA Quick Facts DC Water Client 2 TBMs used 5.5 mile-long main tunnel 18 feet internal diameter, 100 feet deep 93% reduction of CSOs into the Potomac...
by aqathalmar | Sep 1, 2012
50th Street Ventilation Shaft General Contractor 40°45’26.7″N 73°58’29.1″W / New York, NY, USA Quick Facts MTA/FTA Client EAST SIDE ACCESS Program 5 Existing Buildings Demolished 150 feet of Rock excavated with controlled blasting for the vent...
by aqathalmar | Jul 22, 2010
No. 7 Line Extension Site L Ventilation Facility 40°45’28.8″N 73°59’07.8″W / New York City, NY, USA Quick Facts MTA Client 1.5 Mile underground extension 2 Story ventilation building structure 2 Shafts (45’x50’ and 30’x36’ in size and 60’x76’...
by aqathalmar | Feb 1, 2006
World Trade Center Tower 2 Foundation and Superstructure 40°42’43.2″N 74°00’36.7″W / New York City, NY, USA Quick Facts Silverstein & Turner Client PANYNJ Owner 100 foot-deep site 130 High-capacity anchors Never forget Building it back As...
