Journal of Transportation Engineering, Part A: Systems: Recent submissions
Now showing items 4041-4060 of 4147
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Testing of Cement‐Mortar Lined Carbon Steel Pipes
(American Society of Civil Engineers, 1985)Corrosion and incrustation in carbon steel raw water pipelines have been found to be problems at many of TVA's fossil and nuclear plants. Lining existing and new carbon steel raw water pipelines with cement mortar conforming ... -
Simulation and Optimization of Regional Road Network
(American Society of Civil Engineers, 1984)A macroscopic Traffic Simulation and Optimization (TSAO) model has been developed for regional highway networks. It was applied to the Maryland Eastern Shore network, where heavy recreational traffic creates severe congestion ... -
I‐395/I‐66 Traffic Management System
(American Society of Civil Engineers, 1984)On December 22, 1982, the Virginia Department of Highways and Transportation (VDH&T) officially opened 10 miles (16 km) of I‐66 in the Northern Virginia suburbs of Washington after 20 yr of planning, environmental studies, ... -
Stress Analysis of Small Concrete Slabs on Grade
(American Society of Civil Engineers, 1984)Stress conditions in precast airfield concrete pavements are analyzed using the finite element method. The pavements analyzed were small concrete slabs connected at the joints by load‐transfer devices. The slabs were ... -
Pipe Lining Thickness and Thickness Gages
(American Society of Civil Engineers, 1984)Corrosion and incrustation in carbon steel raw water pipes have been problems at many of TVA's fossil and nuclear power plants. Lining existing carbon steel raw water pipes with cement mortar conforming to AWWA C602 ... -
Comparison of Various Freight Train Dispatching Policies for Indian Railways
(American Society of Civil Engineers, 1984)This paper deals with freight train dispatching policies that minimize the total costs incurred in the freight operation of Indian Railways. This study is considered essential as a substantial amount of delay is caused at ... -
Variability of Individual Travel Time Components
(American Society of Civil Engineers, 1984)Each of the separate components of journey time is examined for a variety of travel modes (both public and private) between a single origin and destination pair. The components of travel time considered for variability ... -
Minimum‐Cost Design of Horizontal Pipelines
(American Society of Civil Engineers, 1984)This paper addresses the hydraulic and economic optimum design of a horizontal pipeline with equally spaced similar pumping units. A single design formula is presented for application to all turbulent flow regimes on the ... -
Delphi Forecasts of Land Use: Transportation Interactions
(American Society of Civil Engineers, 1984)The Delphi method is used to predict the impacts of three alternative transportation programs in San Jose, California. Variables projected concern both land use (e.g., number of single‐family housing units) and choice of ... -
Work Area Traffic Control: Evaluation and Design
(American Society of Civil Engineers, 1984)Comprehensive evaluations of traffic controls for three highway construction projects are conducted. These evaluations consist of reviews of the traffic control plans, field checks of the implemented traffic controls, and ... -
Passenger Car Equivalents From Network Simulation
(American Society of Civil Engineers, 1984)A key input in the critical movement analysis (CMA) methodology for intersection capacity estimation is the passenger car equivalent (PCE) of heavy vehicles. Despite the increasing use of CMA, little research has been ... -
Examining The Performance Impacts of Transit Operating Subsidies
(American Society of Civil Engineers, 1984)Transit operating subsidies have recently come under fire on the grounds that they've been largely responsible for the declines in the U.S. transit industry's productivity over the past decade. Surprisingly, until recently, ... -
Predicting Pavement Distress in Oil Field Areas
(American Society of Civil Engineers, 1984)A study on oil field traffic characteristics was performed and a procedure was developed for assessing current and future effects of oil field truck traffic on surface‐treated (stage construction type) pavements. A computer ... -
Pipeburst Flow Analysis
(American Society of Civil Engineers, 1984)The flow in a burst pipe is analyzed by treating it as flow out of a vessel having a large aperture. Lumped system approximation of the flow permits the application of mass oscillation equations. Rupture simulation outlined ... -
Structural Layer Coefficient for Flexible Pavement
(American Society of Civil Engineers, 1984)In order to design flexible pavements employing the AASHO Interim Guide, one must know the layer coefficients of pavement materials. The results of a study to derive structural layer coefficients of several Mississippi ... -
Soil Response Against Oblique Motion of Pipes
(American Society of Civil Engineers, 1984)The four principal directions of buried pipeline restraint are vertical‐ uplift, horizontal‐lateral, vertical‐bearing, and longitudinal‐axial. The remaining soil restraint categories out‐of‐plane with the primary directions ... -
Rail versus Pipeline: Bayesian Decision Problem
(American Society of Civil Engineers, 1984)In response to increased foreign demand for United States bulk commodities, state officials must decide how to improve their port facilities and inland transportation networks. They must consider where improvements should ... -
Reduction of Friction Drag in Pipes by Polymers: A Review
(American Society of Civil Engineers, 1984)Addition of small quantities of polymers to water results in a considerable reduction of drag in pipes. Polyox WSR‐301, one of the most effective drag reducing polymers, appears to be quite effective at concentrations of ... -
Behavior of Jointed Ductile Iron Pipelines
(American Society of Civil Engineers, 1984)Experimental data on the axial, bending and torsional behavior of ductile cast iron pipes with rubber gasket joints is presented. Analytical expressions are provided which predict the resistance mechanisms and behavior of ...