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  2. Air draft - Wikipedia

    en.wikipedia.org/wiki/Air_draft

    The vessel's clearance is the distance in excess of the air draft which allows a vessel to pass safely under a bridge or obstacle such as power lines, etc.A bridge's "clearance below" is most often noted on charts as measured from the surface of the water to the underside of the bridge at the chart datum Mean High Water (MHW), [3] [4] a less restrictive clearance than Mean Higher High Water ...

  3. Loading gauge - Wikipedia

    en.wikipedia.org/wiki/Loading_gauge

    The maximum height, width, and length of general Chinese rolling stock are 4,800 mm (15 ft 9 in), 3,400 mm (11 ft 2 in) and 26 m (85 ft 4 in) respectively, with an extra out-of-gauge load allowance of height and width 5,300 by 4,450 mm (17 ft 5 in by 14 ft 7 in) with some special shape limitation, corresponding to a structure gauge of 5,500 by ...

  4. Bilevel rail car - Wikipedia

    en.wikipedia.org/wiki/Bilevel_rail_car

    Colorado Railcar cars measure 19 ft 9 + 1 ⁄ 2 in (6,033 mm) in height and have steps that enter to a lower deck that is 51 in (1,295 mm) above the rail. Other designs, including rolling stock made by Colorado Railcar , Budd , Pullman-Standard , Bombardier and others have an entrance on the lower deck rather than an intermediate level.