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  2. Clearance (civil engineering) - Wikipedia

    en.wikipedia.org/wiki/Clearance_(civil_engineering)

    The clearance for overhead signs is 5.7 metres (18 ft 8 in) and the clearance for the soffit or underside of overpasses is 10 metres (32 ft 10 in). [ 6 ] In South Africa and the southern region of Africa, the minimum vertical clearance of modern bridges is 5 metres (16 ft 5 in), although the legal height limit of road vehicles is still at 4.3 ...

  3. Glossary of North American railway terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_North_American...

    On some electrified railroads and rapid transit lines, the third rail which supplies power to locomotives or cars [151] [152] [153] Hotel power (US) Electric power used to provide for the comfort of passengers aboard a train en route [154] Hotshot (US) A fast, long-distance train given priority on the track over other trains [155] [156] [157]

  4. Gateshead Millennium Bridge - Wikipedia

    en.wikipedia.org/wiki/Gateshead_Millennium_Bridge

    The pedestrian and cycle deck is a parabolic shape with a 2.7 metres (8.9 ft) vertical camber. It is divided into two separate paths on different levels for the different modes of transport, separated by a stainless steel "hedge" with seating areas and steps interspersed throughout. [ 27 ]

  5. North American Vertical Datum of 1988 - Wikipedia

    en.wikipedia.org/wiki/North_American_Vertical...

    The North American Vertical Datum of 1988 (NAVD 88) is the vertical datum for orthometric heights established for vertical control surveying in the United States based upon the General Adjustment of the North American Datum of 1988. [1] It superseded the National Geodetic Vertical Datum of 1929 (NGVD 29), [2] previously known as the Sea Level ...

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    mail.aol.com/?rp=webmail-std/en-us/basic

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. Overhead line - Wikipedia

    en.wikipedia.org/wiki/Overhead_line

    These were an experimental railway line of Siemens in Berlin-Lichtenberg in 1898 (length 1.8 kilometres (1.1 mi)), the military railway between Marienfelde and Zossen between 1901 and 1904 (length 23.4 kilometres (14.5 mi)) and an 800-metre (2,600 ft)-long section of a coal railway near Cologne between 1940 and 1949.