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/ Phase II: Method Development for Construction Design in Diatomaceous Soils https://rip.trb.org/View/2594023 Thu, 28 Aug 2025 15:33:18 GMT https://rip.trb.org/View/2594023 Combined Inertial and Lateral Spread Demands for Deep Foundations https://rip.trb.org/View/2558398 Wed, 28 May 2025 10:06:55 GMT https://rip.trb.org/View/2558398 Field Durability survey and Evaluation of Drilled Shafts and ACP Piles https://rip.trb.org/View/2536236 Fri, 11 Apr 2025 09:34:27 GMT https://rip.trb.org/View/2536236 Accelerated Bridge Construction (ABC) Methods for Pile-Footing-Column Systems https://rip.trb.org/View/2509057 Wed, 12 Feb 2025 18:34:48 GMT https://rip.trb.org/View/2509057 Accelerated Bridge Construction (ABC) Methodology for Integral Abutments https://rip.trb.org/View/2509055 Wed, 12 Feb 2025 18:06:19 GMT https://rip.trb.org/View/2509055 Effects of Downdrag on Pile Performance, Phase II Pilot Study https://rip.trb.org/View/2499028 Tue, 28 Jan 2025 13:19:36 GMT https://rip.trb.org/View/2499028 Correlating Driven Pile Resistance with Drive Point Test and Measurement-While-Drilling Data https://rip.trb.org/View/2489974 Mon, 13 Jan 2025 15:07:36 GMT https://rip.trb.org/View/2489974 TRC2502: Development of Modern Methods for Evaluation of Timber Pile Capacity https://rip.trb.org/View/2422926 Thu, 29 Aug 2024 12:29:12 GMT https://rip.trb.org/View/2422926 SPR-4923: Development of Design Guidelines and Static Design Method for Open-Ended Pipe Piles https://rip.trb.org/View/2422616 Tue, 27 Aug 2024 14:12:29 GMT https://rip.trb.org/View/2422616 Combined Flexure and Axial Load Performance of UHPC Piles https://rip.trb.org/View/2370810 Mon, 03 Jun 2024 14:36:24 GMT https://rip.trb.org/View/2370810 Statewide Calibration of CPT Direct Design Methods Using Static Load Test Data https://rip.trb.org/View/2359344 Thu, 28 Mar 2024 07:57:45 GMT https://rip.trb.org/View/2359344 Drilled Shaft Imaging With 2d Ultrasonic Waveform Tomography https://rip.trb.org/View/2339973 Thu, 15 Feb 2024 13:07:15 GMT https://rip.trb.org/View/2339973 Evaluation and Incorporation of Site and Laboratory Variability into LRFD Design of Pile Foundations – Phase 2 https://rip.trb.org/View/2292744 Tue, 21 Nov 2023 08:17:38 GMT https://rip.trb.org/View/2292744 Improved Geotechnical Correlations for Lateral Pile Analysis https://rip.trb.org/View/2270164 Thu, 19 Oct 2023 14:12:12 GMT https://rip.trb.org/View/2270164 SPR-4844: Analysis of DownDrag Loads Using the Neutral Plan Method https://rip.trb.org/View/2232902 Thu, 24 Aug 2023 15:20:58 GMT https://rip.trb.org/View/2232902