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  2. Garage door - Wikipedia

    en.wikipedia.org/wiki/Garage_door

    A hinge on each side that attaches to the bottom of each side of the garage door. Using track hardware, a car can be parked much closer to the door, as the door is positioned entirely inside the garage door header when in the open position. Track-type hardware has less arc when raising and lowering the garage door than jamb-type hardware.

  3. Track circuit - Wikipedia

    en.wikipedia.org/wiki/Track_circuit

    Where the length of a section exceeds the practical length of a track circuit, cut tracks can be provided. With a cut track, the relay of the last track cuts the powersource feed of the second last track circuit, and so on. Cut tracks are only suitable for unidirectional tracks. Track circuits with ballast contamination will be shorter than ...

  4. Track geometry - Wikipedia

    en.wikipedia.org/wiki/Track_geometry

    Track gauge or rail gauge (also known as track gage in North America [8]) is the distance between the inner sides (gauge sides) of the heads of the two load bearing rails that make up a single railway line. Each country uses different gauges for different types of trains.

  5. American Railway Engineering and Maintenance-of-Way ...

    en.wikipedia.org/wiki/American_Railway...

    High Speed Rail Systems (Committee 17) Electric Energy Utilization (Committee 33) Track Roadway & Ballast (Committee 1) Rail (Committee 4) Track (Committee 5) Maintenance of Way Work Equipment (Committee 27) Ties (Committee 30) Engineering Services Track Measuring and Assessment Systems (Committee 2) Building & Support Facilities (Committee 6)

  6. Rail fastening system - Wikipedia

    en.wikipedia.org/wiki/Rail_fastening_system

    A tie plate, baseplate or sole plate is a steel plate for centering and reinforcing the attachment point on the rail tracks between a flanged T rail and a railroad tie. The tie plate increases bearing area and holds the rail to correct gauge. It is fastened to wooden ties by means of spikes or bolts through holes in the plate.

  7. Loading gauge - Wikipedia

    en.wikipedia.org/wiki/Loading_gauge

    The main platform is defined to have a height of 1,100 mm (43.3 in) at a distance of 1,920 mm (75.6 in) from the center of the track to allow for trains with profile T. Low platforms at a height of 200 mm (7.9 in) may be placed at 1,745 mm (68.7 in) from the center of the track.

  8. Minimum railway curve radius - Wikipedia

    en.wikipedia.org/wiki/Minimum_railway_curve_radius

    The minimum railway curve radius is the shortest allowable design radius for the centerline of railway tracks under a particular set of conditions. It has an important bearing on construction costs and operating costs and, in combination with superelevation (difference in elevation of the two rails) in the case of train tracks , determines the ...

  9. T-Trak - Wikipedia

    en.wikipedia.org/wiki/T-Trak

    The 25mm spacing was the original specification for T-TRAK but is rarely used due to clearance issues on corners with longer rolling stock. Track spacing of 33m is the most common spacing for existing modules and is identical to Kato's double track pieces (e.g. concrete tie track, double cross over, etc.).

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