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A gooseneck tunnel, an indentation in the floor structure, that meshes with the gooseneck on dedicated container semi-trailers, is a mandatory feature in the bottom structure of 1AAA and 1EEE (40- and 45-ft high-cube) containers, and optional but typical on standard height, forty-foot and longer containers. [62]
A gooseneck is a semi-rigid, flexible joining element made from a coiled metal hose. Similar to its natural counterpart , it can be bent in almost any direction and remain in that position. [ 1 ] Areas of application for goosenecks are movable brackets for lights , magnifying glasses , microphones and other devices. [ 2 ]
In civil engineering, clearance refers to the difference between the loading gauge and the structure gauge in the case of railroad cars or trams, or the difference between the size of any vehicle and the width/height of doors, the width/height of an overpass or the diameter of a tunnel as well as the air draft under a bridge, the width of a lock or diameter of a tunnel in the case of watercraft.
PPI – the predecessor of the UIC gauges had the maximum dimensions 3.15 by 4.28 m (10 ft 4 in by 14 ft 1 in) with an almost round roof top. UIC A: The smallest (slightly larger than PPI gauge). [5] Maximum dimensions 3.15 by 4.32 m (10 ft 4 in by 14 ft 2 in). [6] UIC B: Sligtly larger than the UIC on the roff level. [5]
Tunnel Construction. Tunnels are dug in types of materials varying from soft clay to hard rock. The method of tunnel construction depends on such factors as the ground conditions, the ground water conditions, the length and diameter of the tunnel drive, the depth of the tunnel, the logistics of supporting the tunnel excavation, the final use and shape of the tunnel and appropriate risk management.
The tunnel support guidelines based on RMR were provided originally in the form of a table giving support recommendations for a tunnel span/diameter of 10 meters. In view of the improving technology for rock bolting, shotcrete and steel ribs, it was left to tunnel designers to modify these guidelines for other tunnel sizes, which served its ...
A new analysis shows that building a California water tunnel would cost $20 billion. State officials say the project's benefits would far outweigh the costs.
The test itself involves an assembly of the tested material, fabricated into an otherwise noncombustible horizontal box or tunnel as the tunnel's roof, in a section 7.3 metres (24 ft) long and 0.56 metres (1.8 ft) wide. The tunnel is as wide and long as the test specimen, and 0.305 metres (1.00 ft) high.