Transport Research International Documentation (TRID) https://trid.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) Transport Research International Documentation (TRID) https://trid.trb.org/Images/PageHeader-wTitle.jpg https://trid.trb.org/ Study on Hydroaccumulation Patterns in V-Shaped Slope Tunnels of Subways During Floods https://trid.trb.org/View/2632983 Mon, 27 Apr 2026 14:58:59 GMT https://trid.trb.org/View/2632983 Energy Dissipation in Eighteen-Foot Broken-Back Culverts Using Laboratory Models https://trid.trb.org/View/2675147 Sun, 15 Mar 2026 17:52:28 GMT https://trid.trb.org/View/2675147 Numerical study on 2:1 nonlinear parametric resonant responses of a Spar buoy in waves https://trid.trb.org/View/2577600 Thu, 14 Aug 2025 17:10:56 GMT https://trid.trb.org/View/2577600 Feasibility Study of a Radial-Flow Energy Dissipator for Culvert Outlets https://trid.trb.org/View/2521861 Sun, 16 Mar 2025 18:13:10 GMT https://trid.trb.org/View/2521861 End Sills and the Forced Hydraulic Jump in Circular Culverts Operating at Low Discharge Factors https://trid.trb.org/View/2427482 2.5 the headwater submerges the culvert entrance, and the air entrained by the jump inside the pipe causes a partial vacuum to develop adding an upstream force to aid the sill in stabilizing the jump. Thus less sill height is required. Considering the sill locations, the sill at the culvert outlet is probably the least desirable because of the maintenance problems it poses when debris and eroded material are deposited by flood waters inside the culvert. The sill at the mid-point of the flared wing walls appears to be the most desirable since less additional channel protection immediately downstream of such a sill is required. Protection in the form of a concrete apron or riprap is usually supplied between the wing walls so erosion by the flow over a sill at the mid-point of the wing walls would be limited. Slightly less sill height is required by a sill at the mid-point of the wing walls than one at the end of the wing walls, however, the sill at the end of the wing walls is more effective in spreading the flow across the downstream channel within a shorter distance. At distances of ten to twelve pipe diameters from the sills, the difference in flow patterns does not appear to be appreciable . With the sill located at either the mid-point or end of the wing walls, an average of 80% energy reduction was measured between the end of the sloped portion of the broken-back culvert and a section downstream of the sills.]]> Sun, 15 Sep 2024 17:48:23 GMT https://trid.trb.org/View/2427482 Energy Dissipation in Twelve-Foot Broken-Back Culverts using Laboratory Models https://trid.trb.org/View/1423511 Mon, 26 Sep 2016 11:04:34 GMT https://trid.trb.org/View/1423511 Energy Dissipation in Thirty-Foot Broken-Back Culverts Using Laboratory Models https://trid.trb.org/View/1369876 Fri, 25 Sep 2015 16:17:34 GMT https://trid.trb.org/View/1369876 Energy Dissipation in a Thirty-Foot Drop Broken-Back Culvert under Open-Channel Flow Conditions https://trid.trb.org/View/1353605 Thu, 28 May 2015 09:23:31 GMT https://trid.trb.org/View/1353605 Energy Dissipation in Six-Foot Drop Broken Back Culverts under Open Channel Flow Conditions https://trid.trb.org/View/1311071 Fri, 20 Jun 2014 09:20:33 GMT https://trid.trb.org/View/1311071 Energy Dissipation in Six-Foot Drop Broken-Back Culverts under Pressure Flow Conditions https://trid.trb.org/View/1287615 Mon, 24 Feb 2014 08:43:02 GMT https://trid.trb.org/View/1287615 Laboratory Modeling of Energy Dissipation in Broken-back Culverts – Phase II https://trid.trb.org/View/1262835 Thu, 26 Sep 2013 13:29:20 GMT https://trid.trb.org/View/1262835 Review of Laboratory Experiments and Computer Models for Broken-box Culverts https://trid.trb.org/View/1237861 Thu, 17 Jan 2013 13:56:30 GMT https://trid.trb.org/View/1237861 Laboratory Modeling of Energy Dissipation in Broken-back Culverts https://trid.trb.org/View/1108029 Wed, 10 Aug 2011 10:42:47 GMT https://trid.trb.org/View/1108029 Wailupe Stream, Channel Improvement at Kalanianaole Highway, Honolulu, HI https://trid.trb.org/View/925165 Thu, 19 Aug 2010 11:16:51 GMT https://trid.trb.org/View/925165 Scattergraph Principles and Practices: Practical Application of the Froude Number to Flow Monitoring https://trid.trb.org/View/840621 Tue, 18 Dec 2007 11:31:33 GMT https://trid.trb.org/View/840621