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/ Field Evaluation of Alternative and Cost-Efficient Bridge Approach Slabs https://rip.trb.org/View/1301311 Fri, 07 Mar 2014 01:01:49 GMT https://rip.trb.org/View/1301311 Time-Dependent Performance of Buried Pipes in a Consolidating Soil Medium https://rip.trb.org/View/1230090 Thu, 03 Jan 2013 13:53:52 GMT https://rip.trb.org/View/1230090 Performance of Buried Pipes with Flowable Fill and Granular Stone as Backfill Materials https://rip.trb.org/View/1230089 Thu, 03 Jan 2013 13:53:51 GMT https://rip.trb.org/View/1230089