Track bed

Thetrack bedortrackbedis the groundwork onto which arailway trackis laid. Trackbeds of disused railways are sometimes used forrecreational pathsor newlight raillinks.

Background[edit]

According toNetwork Rail,the trackbed is the layers ofballastandsub-ballastabove a preparedsubgrade/formation (see diagram). It is designed primarily to reduce the stress on the subgrade.

Other definitions include the surface of the ballast on which the track is laid,^[1]the area left after a track has been dismantled and the ballast removed^[1]or the track formation beneath the ballast and above the natural ground.^[2]

The trackbed can significantly influence the performance of the track, especiallyride qualityof passenger services.

References[edit]

^^a ^bEllis, Iain (2006).Ellis' British Railway Engineering Encyclopaedia.Lulu.com.ISBN 978-1-8472-8643-7.,p. 386.
^Jackson, Alan A. (2006).The Railway Dictionary(4th ed.). Sutton Publishing Ltd. p. 297.ISBN 0-7509-4218-5.

[Ellis-1] Ellis, Iain (2006).Ellis' British Railway Engineering Encyclopaedia.Lulu.com.ISBN 978-1-8472-8643-7.,p. 386.

[2] Jackson, Alan A. (2006).The Railway Dictionary(4th ed.). Sutton Publishing Ltd. p. 297.ISBN 0-7509-4218-5.

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[2]

Background[edit]

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References[edit]