... rail chairs, etc. In any event you would need to order more than the minimum to allow for the inevitable losses, breakages, etc. when threading rail -- apart from any last minute design changes. For plain track templates you can get an approximate count by grouping all the plain track templates (group> create smaller group> group all plain track templates), and then dividing the total group timbering length by the length of your plain track sleepers (34mm for the last 100 years in 4mm scale): 2_031639_140000000.png So 55114mm above divided by 34mm= 1621 sleepers. 2 ordinary chairs per sleeper= 3242 chairs. BUT, big but, that doesn't include any plain track approach and exit tracks in the turnout templates. The total length of timbering in those above is 68820- 55114= 13706mm. Dividing that by 34mm will overstate the number of timbers because it should include some longer crossing timbers. But those will require extra chairs, so the end result may not be too far out. It all depends on your track design and ...