... why list them in 60ft (18.3m) panels? (sorry for the metric, quicker to type!) posted: 8 Sep 2009 12:47 from: richard_t From edition 6, for CWR sleeper spacing varies between 650mm to 750mm depending on the line speed, amount of traffic and typical tonnage. posted: 8 Sep 2009 13:00 from: Martin Wynne Hi Adriano, Here's a scan from BRT4. If you view it in the Image Gallery you can click the link to see the scan at original size. 2_080749_470000000.png For CWR: 26 per 60ft is normal. 28 per 60ft is used where: line speed is over 100mph, or radius is less than 40 chains, or cwr on wooden sleepers (rare). Chart and dimensions apply from 1969 -- which era are you modelling? Earlier practice varied slightly, and present day practice is more complex. regards, Martin. posted: 8 Sep 2009 13:05 from: Martin Wynne richard_t wrote: 26 (C.W.R): 351mm+ 25 x 702mm+ 351mm 28 ( ...