JeffP Posted September 12, 2013 Share Posted September 12, 2013 Here's a shot of a lorry I saw yesterday leaving the Vossloh-Cogifer plant at Scunthorpe. All the ties are numbered, I wonder if they use a huge template on site? Link to post Share on other sites More sharing options...
RMweb Gold The Stationmaster Posted September 12, 2013 RMweb Gold Share Posted September 12, 2013 The interesting bit is the 'bolt together' 'sleepers' which have what appears to be butt a joint in the middle (of the four foot) - one hopes that the bolts won't start to 'work'. Link to post Share on other sites More sharing options...
PatB Posted September 12, 2013 Share Posted September 12, 2013 They'll be needing an awful lot of solvent to stick the chairs down . Link to post Share on other sites More sharing options...
fender Posted September 12, 2013 Share Posted September 12, 2013 ah yes, the first bit for my new garden railway! Link to post Share on other sites More sharing options...
JeffP Posted September 12, 2013 Author Share Posted September 12, 2013 The chairs appear to have been cast in place. I keep meaning to go and ask if I can take some close-up photos of turnouts on site. Would it be of any use to anyone else? Link to post Share on other sites More sharing options...
RMweb Premium Richard E Posted September 12, 2013 RMweb Premium Share Posted September 12, 2013 When Colton Junction was relaid the sleepers were numbered this way and assembled along side the worksite with pre-cut rail before being lifted into place to be installed. Link to post Share on other sites More sharing options...
Trog Posted September 12, 2013 Share Posted September 12, 2013 It used to be done with a string line or theodolite to set the alignment of the timbers, the manufacturer having drawn a line usually down the 4' while the timbers were laid out in their yard for the test build up. There would then be two sets of wooden laths that were laid along the sleeper ends, one set black the other white. These were marked with the position of the sleepers along the layout. Between the two you could get the timbers laid out well enough to drop the rails on, and get the layout put together. Link to post Share on other sites More sharing options...
stewartingram Posted September 12, 2013 Share Posted September 12, 2013 Were there any holes in the sleepers for the track pins? Stewart ps just wondered if you looked at the underside to see if it was marked Peco? Link to post Share on other sites More sharing options...
Trog Posted September 12, 2013 Share Posted September 12, 2013 Were there any holes in the sleepers for the track pins? Stewart ps just wondered if you looked at the underside to see if it was marked Peco? No we used a very large eye dropper full of dilute PVA and a bucket full of Fairy Liquid. Link to post Share on other sites More sharing options...
RMweb Premium BR60103 Posted September 13, 2013 RMweb Premium Share Posted September 13, 2013 When I was commuting into Toronto, I saw tracklaying in two styles. On the mainline, they used RTR pointwork -- each point seemed to be in 3 sections -- and they were just dropped in place. When they rebuilt an old yard for intermodal (its been redeveloped since) they laid the points with individual sleepers and rails. Link to post Share on other sites More sharing options...
RMweb Premium Richard E Posted September 13, 2013 RMweb Premium Share Posted September 13, 2013 To add to this I noticed yesterday that there is a stack of new sleepers at Peterborough all nicely numbered and waiting for assembly - south end of the new platforms I suspect ... Link to post Share on other sites More sharing options...
Southernman46 Posted September 13, 2013 Share Posted September 13, 2013 The interesting bit is the 'bolt together' 'sleepers' which have what appears to be butt a joint in the middle (of the four foot) - one hopes that the bolts won't start to 'work'. Yes, it's a (Balfour Beatty designed) method of creating "long" concrete "timbers" in S&C - don't think it's for very high speed use. 682 crossover coming out of Clapham Jn Up Main Loop (Plat 7) back onto the Up Main installed in 2004 during my tenure there was the first use in Wessex. A godsend when you see what it replaced The numbers on the concrete bearers show exactly where they go in the layout which are built up off-site first to check everything fits and is there............. and there's ALWAYS one left over on site afterwards that hasn't fitted............... Link to post Share on other sites More sharing options...
R A Watson Posted September 15, 2013 Share Posted September 15, 2013 Here are a couple of pictures of a relaying job carried out in Plymouth a little while ago - the bits were brought in having been assembled off site (Tavistock Junction possibly?) and dropped in place as can be seen here, the up side on this occasion, and the down line about a month later. The chaps in the centre of the photo are standing on the divergence of the turnout, where the joining bolts protrude from the sleeper ends. Although I did not capture the work during the second occupation this is a detail shot of the finished crossover showing the fixing of the two sides using the vertical studs. This needs careful measuring when casting the second set of bearers to ensure that the stud holes are correct to allow the studs (which are welded to the reinforcing steels in the first bearer before the concrete is poured) to slide through correctly and allow every thing to align. You can clearly see where the two bearers butt up against each other close to the near rail. I hope this helps to explain the methodology of this operation Wally Link to post Share on other sites More sharing options...
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