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The Traffic Tunnel Administration Building, also known as Boston Police Station Number One, is a historic government building in the North End of Boston, Massachusetts.The building occupies a prominent position facing North End Park off the Rose Kennedy Greenway, and is bounded by the park, North Street, and the trench carrying the exit point of the Sumner Tunnel.
A Boston Police Special Operations officer A Boston Police cruiser on Beacon Street Boston Police cruiser near Berklee College of Music Boston Police Department kiosk in Downtown Crossing The Boston Police Department has approximately 2,015 officers and 808 civilian personnel, with patrol services covering an area of 89.6 mi 2 (232.1 km 2 ) and ...
(This is the angle α opposite the "rise" side of a triangle with a right angle between vertical rise and horizontal run.) as a percentage , the formula for which is 100 × rise run {\displaystyle 100\times {\frac {\text{rise}}{\text{run}}}} which is equivalent to the tangent of the angle of inclination times 100.
The building at 941–955 Boylston Street in the Back Bay district of Boston, Massachusetts was designed by Arthur H. Vinal in 1886, while he was City Architect, as the city's first combined fire and police station. The building, constructed in 1887, is in the Richardsonian Romanesque style, as was Vinal's most notable other work, the Chestnut ...
1 in 15.4 (6.5%) Incline from the Causeway Street Tunnel up to the Lechmere Viaduct on the Green Line (MBTA), Boston, Massachusetts, United States [15] This incline is commonly believed to be the "steepest grade of tracks in the T system." [16] 1 in 15.9 (6.3%) Alishan Forest Railway, Taiwan: 1 in 16.4 (6.1%) Hunsrückbahn, Germany: Built as a ...
A horseshoe curve is a means to lengthen an ascending or descending grade and thereby reduce the maximum gradient. Grade or gradient is defined as the rise divided by the run (length) or distance, so in principle such curves add to length for the same altitude gain, just as would a climbing spiral around one or more peaks, or a climbing traverse (cutting) wrapping around an end of a ridge.
The angle of climb can be defined as the angle between a horizontal plane representing the Earth's surface, and the actual flight path followed by the aircraft during its ascent. The speed of an aircraft type at which the angle of climb is largest is called V X. It is always slower than V Y, the speed for the best rate of climb. As the latter ...
Escalators typically rise at an angle of 30 or 35 degrees from the ground. [25] They move at 0.3–0.9 metres per second (1–3 ft/s), like moving walkways , and may traverse vertical distances in excess of 18 metres (60 ft).