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Dutch to English translations [PRO]
Tech/Engineering - Engineering (general) | | Dutch term or phrase: topboog / dalboog | Een verticale topboog van 250 m en
groter, en een verticale dalboog van 300
m en groter, kan door een spoorvoertuig
dat wordt geheuveld, worden doorlopen. |
| | | crest curve, sag curve | Explanation:
Appears to be the commonly used terminology for roads and railways for convex and concave vertical curves.
ref (Dutch):
3 Bogen, heuvelsporen en wissels
3.1 Algemeen
Tijdens het berijden van het Nederlandse net passeert het materieel bogen. Er zijn verticale en horizontale bogen. Het toe te laten materieel moet ongehinderd en veilig de genoemde boogtypen
kunnen doorlopen.
De kleinste horizontale en verticale radius van het toe te laten materieel is bepalend.
3.2 Eisen
...
4. Indien materieel geheuveld wordt, dient rekening gehouden te worden met de topboog met R = 250 m en een dalboog aan de voet van de heuvel met R = 300 m.
www.prorail.nl/NR/rdonlyres/265D9C68-8C31-40EA-8EE1-94AA160...
(English)
Vertical Curves
Speed (mph)
Crest Curve Radius (feet)
Sag Curve Radius (feet)
www.acmaglev.com/Chapter 3Final.pdf
Convex vertical curves are referred to as crest or summit curves. Concave vertical curves are commonly known as sag curves.
www.parksandplaces.act.gov.au/public/roaddesign.pdf |
| Selected response from:
Ken Cox
Local time: 14:16
| Grading comment excellent
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