Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site brl-tgr.ARPA Path: utzoo!linus!philabs!cmcl2!seismo!brl-tgr!tgr!drockwel@CSNET-SH.ARPA From: drockwel@CSNET-SH.ARPA (Dennis Rockwell) Newsgroups: net.railroad Subject: Re: Ties Message-ID: <1608@brl-tgr.ARPA> Date: Thu, 19-Sep-85 12:02:44 EDT Article-I.D.: brl-tgr.1608 Posted: Thu Sep 19 12:02:44 1985 Date-Received: Sat, 21-Sep-85 10:46:05 EDT Sender: news@brl-tgr.ARPA Lines: 18 From: Nicholas.Spies@h.cs.cmu.edu Date: 18 Sep 1985 19:18-EST Subject: Ties The interesting messages about rail technology prompts me to ask whether any of you know what has happened to the idea of using pre-stressed concrete for RR ties. I can report on what I've seen recently. AMTRAK is apparently using concrete ties in the Washington area (specifically in the NE Corridor near New Carrolton), but not in other places (like around DC Union Station). The MBTA is using concrete base plates (each taking the place of about four ties) in new tunnels (esp. in new areas of the Red Line subway), but is still using wooden ties for new track outdoors, and in the reconstructed areas of the Green Line (LRVs and PCCs). The DC Metro follows the Red Line scheme. B&M, while laying all this new welded rail, is still using wooden ties, at least in the places I've seen. Brought to you by Super Global Mega Corp .com