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/ AASHTO LRFD Design, Installation, and Standard Practice of Testing for Cured In-Place Pipe Liners https://rip.trb.org/View/2533713 Tue, 01 Apr 2025 09:26:06 GMT https://rip.trb.org/View/2533713 Guide for Design, Installation, and Testing of Cured In-Place Pipe Liners https://rip.trb.org/View/2419748 Tue, 20 Aug 2024 09:39:08 GMT https://rip.trb.org/View/2419748 Role Of Grout And GFRP Slip Liner On The Circumferential Behaviour Of Retrofitted Corroded Metal Culverts https://rip.trb.org/View/2404267 Sun, 21 Jul 2024 14:59:54 GMT https://rip.trb.org/View/2404267 Culvert Rehabilitation using 3D Printed Diffusers (2.11) https://rip.trb.org/View/1875941 Thu, 14 Jul 2022 11:34:50 GMT https://rip.trb.org/View/1875941 Annulus Void Fill Material for Rehabilitated Sliplined Culverts https://rip.trb.org/View/1664486 Tue, 05 Nov 2019 11:43:08 GMT https://rip.trb.org/View/1664486 Characterization of Modern High Toughness Steels for Fracture Propagation and Arrest Assessment- Phase II https://rip.trb.org/View/1523904 Thu, 12 Jul 2018 14:34:50 GMT https://rip.trb.org/View/1523904 Structural Design Methodology for Spray Applied Pipe Liners in Gravity Storm Water Conveyance Conduits (TPF-5(356)) https://rip.trb.org/View/1492196 Mon, 18 Dec 2017 10:17:23 GMT https://rip.trb.org/View/1492196 Structural Design Methodology for Spray Applied Pipe Liners in Gravity Storm Water Conveyance Conduits https://rip.trb.org/View/1456883 Wed, 22 Feb 2017 18:11:06 GMT https://rip.trb.org/View/1456883