Research in Progress (RIP) https://rip.trb.org/ en-us Copyright © 2026. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Research in Progress (RIP) https://rip.trb.org/Images/PageHeader-wTitle-RIP.jpg https://rip.trb.org/ Adaptive Prestressing System for Concrete Crossties: Prototype Development https://rip.trb.org/View/2007977 Mon, 15 Aug 2022 16:37:23 GMT https://rip.trb.org/View/2007977 Evaluation of Seismic Performance of Bridge Columns with Couplers and Development of Design Guideline https://rip.trb.org/View/1398655 Mon, 22 Feb 2016 15:48:57 GMT https://rip.trb.org/View/1398655 Strength, Durability, and Application of Grouted Couplers for Integral Abutments in ABC Projects https://rip.trb.org/View/1398653 Mon, 22 Feb 2016 15:35:38 GMT https://rip.trb.org/View/1398653 SEISMIC: Seismic Performance of Precast Bridge Columns with Grouted Couplers https://rip.trb.org/View/1234194 Thu, 03 Jan 2013 15:08:19 GMT https://rip.trb.org/View/1234194