Templot Club Archive 2007-2020                             

topic: 1213Ballast width
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posted: 23 Aug 2010 11:58

from:

Nigel Brown
 
 

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Hi folks

I'm trying to come up with a figure for typical ballast width, e.g. on a single track line what would the distance from outer edge of rail to outer limit of ballast be. Sure I had this info somewhere but can't locate it. Currently I'm trying 3'6", which seems a bit narrow; I've an idea I've used something more like 5' in the past. The layout in question is GWR 1930s.

Any ideas?
Cheers
Nigel

posted: 23 Aug 2010 14:19

from:

Russ E
 
 

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These are typical:

 590_230916_500000000.gif590_230916_500000000.gif

 

 590_230917_250000000.gif590_230917_250000000.gif

Last edited on 23 Aug 2010 14:22 by Russ E
posted: 23 Aug 2010 15:13

from:

Martin Wynne
 
West Of The Severn - United Kingdom

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Thanks Russ.

Some more drawings. These show the camber on the base formation, which is essential for drainage:

cess1.jpgcess1.jpg


This shows modern deep ballasting for long-welded rail. The heaped ballast shoulders are needed to prevent the track buckling sideways under heat expansion:

cess2.jpgcess2.jpg


regards,

Martin.

posted: 23 Aug 2010 17:47

from:

Nigel Brown
 
 

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Thanks for the replies. So allowing roughly 2' for the end of the 9' sleeper, it works out around 3' to the top of the shoulder and 4' to the bottom, so my 3'6" is in the right ball park.

Any idea about in the vicinity of stations? Judging from pics, the ballast shoulder seems to almost disappear, especially on sidings but also on through lines. Also, where complex formations are involved (cf the pic on the front of David Smith's GWR book) the ballast seems to fill the area between the tracks even where these are quite widely separated.

Cheers
Nigel



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