Talk:Track bed

Trains Mid‑importance

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"According to Network Rail"?[edit]

Really, well. What is the ballast? What is the sub-ballast? What is the sub-grade/formation? Are they the same thing? Always? Why is it important to reduce stress on the sub-grade? How do the various components achieve this? How does a "muddy ballast...generate a battery effect" (I got here from Track_circuits (Officially part of WikiProject Trains)? ISTM that many Rail related pages are thin on useful detail and assume an already complete knowledge of rail jargon (See the Jointless track circuits section of the Track_circuits page. Completely useless to anyone.) Hardly encyclopedic. —Preceding unsigned comment added by 86.7.26.47 (talk) 02:06, 26 December 2007

Network Rail owns and operates Britain’s rail infrastructure, so they are an authority in this field. There is a separate and very detailed article on ballast which also explains sub-ballast; try following the links. Wikipedia is a work in progress. If you are dissatisfied with the detail please contribute to it rather than rant. --Bermicourt (talk) 08:00, 25 May 2009 (UTC)[reply]