Search results
Results from the WOW.Com Content Network
The first TBM peaked at 4 meters per week. This increased to 16 meters per week four decades later. By the end of the 19th century, speeds had reached over 30 meters per week. 21st century rock TBMs can excavate over 700 meters per week, while soil tunneling machines can exceed 200 meters per week.
Following a month of maintenance and inspections, Bertha resumed tunneling on Friday, April 29, 2016, [4] and crossed 15 feet (4.6 m) under the closed viaduct in an 11-day closure in early May that ended earlier than scheduled. [61] In June 2016, the tunnel reached its lowest point, 115 feet (35 m) under Madison Street in downtown. [62]
Velocities in different frames of reference are not directly comparable; thus the matter of the "fastest spacecraft" depends on the reference frame used. Because of the influence of gravity, maximum velocities are usually attained when a spacecraft is close to its primary body: either just after launch, at a point of closest approach ...
13.71 m (44' 11 3/4") Brittany Daniels Merrill F. West High School: Tracy, California: College Station, Texas: USATF Junior Track & Field Championships June 27, 2004 Triple jump: 13.46 m (44' 2 1/4") Ychlindria Spears Luling High School: Luling, Texas: Austin, Texas: TUIL state track meet May 11, 2001 [92] Shot put: 17.27 m (56' 8 ¼") Raven ...
Once the water is used in hydroelectric production it is then discharged from the power station to the Beles River via a 7.2 km (4.5 mi) tailrace tunnel with the same diameter as the headrace. Normal water level at the inlet is 1,800 m (5,900 ft) above sea level and the power station resides at 1,450 m (4,760 ft), allowing for 350 m (1,150 ft ...
4.1 m in diameter (13.2 m 2). New York City's main water supply tunnel. Water supply Päijänne Water Tunnel: Southern Finland, Finland 120,000 m (74.565 mi) 1982 16 m 2 cross section. Main water supply tunnel for the Helsinki metropolitan area in southern Finland, drilled through solid rock. Metro Suzhou Rail Transit Line 3-11: Suzhou, China
1:43.4 Canada 2019 Jennifer Casson: IRwS Open Men 5:40.6 1:25.1 United States 2024 Marcus Cannon Lorgen IRwS Lightweight Men 6:06.0 1:31.5 United States 2023 Jamie Copus IRwS Open Women 6:46.8 1:41.7 United States 2006 Taliesin Davies IRwS Lightweight Women 7:29.7 1:52.4 United States 2008 Lynn Bender DIR C2 Open Men 5:41.8 1:25.4 New Zealand 2012
Typical speed of a modern high-speed train (e.g. latest generation of production TGV); a diving peregrine falcon—fastest bird; 320 km/h or 200 mph is a parameter sometimes used in defining a supercar.