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- Spiral_(railway) abstract "A spiral (sometimes called a spiral loop or just loop) is a technique employed by railways to ascend steep hills.A railway spiral rises on a steady curve until it has completed a loop, passing over itself as it gains height, allowing the railway to gain vertical elevation in a relatively short horizontal distance. It is an alternative to a zig-zag, and avoids the need for the trains to stop and reverse direction while ascending. If the train is of sufficient length, it is possible to view the train looping onto itself.A spiral loop should not be confused with the transition spiral or spiral easement used to provide a transition from a tangent into a horizontal circular curve. Spiral easement is used to avoid abrupt changes in the sideward acceleration experienced by a railroad vehicle and the passengers in the vehicle approaching the horizontal circular curve and to prevent abrupt forces and discomfort. These curves are also used in highway engineering.A similar feature to railway spirals in road design is the pigtail bridge.".
- Spiral_(railway) thumbnail RhB_ABe_4-4_III_Kreisviadukt_Brusio.jpg?width=300.
- Spiral_(railway) wikiPageExternalLink 01.htm.
- Spiral_(railway) wikiPageExternalLink Gov10_01Rail-fig-Gov10_01Rail035a.html.
- Spiral_(railway) wikiPageExternalLink Gov11_06Rail-fig-Gov11_06Rail035a.html.
- Spiral_(railway) wikiPageExternalLink ?lat=-3.9947&lon=39.548&zoom=14&layers=M.
- Spiral_(railway) wikiPageExternalLink trackage.shtml.
- Spiral_(railway) wikiPageID "1133929".
- Spiral_(railway) wikiPageRevisionID "603851571".
- Spiral_(railway) hasPhotoCollection Spiral_(railway).
- Spiral_(railway) subject Category:Railway_track_layouts.
- Spiral_(railway) subject Category:Spirals.
- Spiral_(railway) point "51.435976 -116.403653".
- Spiral_(railway) type Abstraction100002137.
- Spiral_(railway) type Arrangement105726596.
- Spiral_(railway) type Attribute100024264.
- Spiral_(railway) type Cognition100023271.
- Spiral_(railway) type Curve113867641.
- Spiral_(railway) type Design105728678.
- Spiral_(railway) type Layout105837271.
- Spiral_(railway) type Line113863771.
- Spiral_(railway) type PsychologicalFeature100023100.
- Spiral_(railway) type RailwayTrackLayouts.
- Spiral_(railway) type Shape100027807.
- Spiral_(railway) type Spiral113876371.
- Spiral_(railway) type Spirals.
- Spiral_(railway) type Structure105726345.
- Spiral_(railway) type SpatialThing.
- Spiral_(railway) comment "A spiral (sometimes called a spiral loop or just loop) is a technique employed by railways to ascend steep hills.A railway spiral rises on a steady curve until it has completed a loop, passing over itself as it gains height, allowing the railway to gain vertical elevation in a relatively short horizontal distance. It is an alternative to a zig-zag, and avoids the need for the trains to stop and reverse direction while ascending.".
- Spiral_(railway) label "Boucle hélicoïdale".
- Spiral_(railway) label "Liste von Kreiskehrschleifen".
- Spiral_(railway) label "Spiral (railway)".
- Spiral_(railway) label "ループ線".
- Spiral_(railway) sameAs Kolejová_smyčka.
- Spiral_(railway) sameAs Liste_von_Kreiskehrschleifen.
- Spiral_(railway) sameAs Boucle_hélicoïdale.
- Spiral_(railway) sameAs ループ線.
- Spiral_(railway) sameAs 루프선.
- Spiral_(railway) sameAs m.0495h0.
- Spiral_(railway) sameAs Q846907.
- Spiral_(railway) sameAs Q846907.
- Spiral_(railway) sameAs Spiral_(railway).
- Spiral_(railway) lat "51.435976".
- Spiral_(railway) long "-116.403653".
- Spiral_(railway) wasDerivedFrom Spiral_(railway)?oldid=603851571.
- Spiral_(railway) depiction RhB_ABe_4-4_III_Kreisviadukt_Brusio.jpg.
- Spiral_(railway) isPrimaryTopicOf Spiral_(railway).
