... that the diamond point tips will be further from the centre, and there is then room for a middle timber. Click the real> timbering> half-diamond timbering> timbering as model menu option to have Templot adopt this non-prototypical arrangement and include a middle timber. For more information about this, click the real> timbering> half-diamond timbering>? half-diamond timbering- help menu item. This is the prototypical arrangement for a short crossing in P4 -- narrow flangeways, no middle timber: 2_270615_360000001.png This is the non-prototypical model option in 00-BF -- wider flangeways, the diamond points are further from the centre, and there is room for a middle timber: 2_270615_350000000.png regards, Martin. Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Templot talk> Half-diamond timbering about Templot Club Templot Companion- User Guide- A-Z Index Templot Explained for beginners Please click: important information for new members and ...