Type : Bid Notification
Due : 28 Nov, 2020 (about 3 years ago)
Posted : about 3 years ago
Started : 24 Nov, 2020 (about 3 years ago)
to be delivered to Arnold Engineering and Development Complex (AEDC) White Oak, Tunnel 9 10905 New Hampshire Ave.
to be delivered to Arnold Engineering and Development Complex (AEDC) White Oak, Tunnel 9 10905 New Hampshire Ave.
Other project components include 2,136 feet of 8 feet ID combined sewer installed by tunneling in soft ground conditions, one 60 feet ID by 80 feet deep tunnel diversion structure shaft with internal baffle drop, three deep baffle drop shafts, two deep plunge drop shafts, four tunnel adits, 450 LF of twin 90-inch ID overflow pipe installed in tunnel, 570 LF of 4-feet finished dewatering pipe installed by trenchless methods, more than 850 LF of cut