... the switch rail joint, and 1 block chair is beyond the stock rail joint. If you put the timber numbering on in Templot you will see there are 14 S timbers. For the C switch the last block chair is inside the switch rail joint. Templot marks the 13th timber as part of the switch (S13) so that the correct joint spacing can be included in the switch settings. Switch rail joints are spaced 2ft-2in. Stock rail joints are spaced 2ft-0in. Table 9 in BRT3 refers. 2_271515_440000000.png Martin. posted: 27 Jun 2011 20:23 from: geoff Martin, Nigel, Thank you for such prompt replies. Learn something every day( forget 10 things!). Timely reply because I was just annotating my print-outs with chair info before starting a build. Cheers. Geoff Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Trackbuilding topics> D12 turnout geometry in EM gauge about Templot Club Templot Companion- User ...