Port Valdez Environmental Studies: 1976-1978
All oily ballast water from the holds of tankers arriving at the Trans-Alaska Pipeline terminus in Valdez is pumped ashore for treatment before being discharged into Port Valdez. The Institute...

Track Maintenance: Management and Planning
In 1978, excess of 3.4 billion dollars was spent for maintenance and improvements of the fixed plants of American railroads. The lack of an accepted model of track deterioration makes...

GEOTRACK Model for Railroad Truck Performance
In order to provide a basis for predicting track performance, an analytical model is necessary that will realistically represent the actual behavior of the track system subjected to vehicle...

Water System Improvement Program in Eugene, Oregon
A water system radiating from a central area can stretch only so far. Adding more capacity requires proper planning, financial strength, and the art of meeting the system requirements...

Subway Construction Costs: The Role of the Engineer
Methods of controlling costs through design in the underground construction of transit system are covered. Seven types of stations were development according to method of excavation, and...

The Rail-Highway Grade Crossing Program—A State's View

Railroad Highway Grade Crossing Program: Railroad View

America's Covered Bridges
Soon after the Revolutionary War, bridge construction became more important in the United States. Early builders developed by trail and error an economical, permanent, long-span covered...

Mode Alternatives for Serving Rail Freight Users

Role of Innovative Engineering in Rail Operations

Railroad Ballast Sizing and Grading
The specified top size and grading of railroad ballast affects any economic evaluation and its performance in track. Both parameters affect any economic evaluation of ballast; as such...

Railroad Ballast Prescription: State-of-the-Art
A review of ballast prescriptions for specification writing is combined with new research data to outline typical requirements for selecting ballast. A method of classifying ballast for...

Examination of Degraded Aggregate Cement Value Test
The degraded ballast cement-test variables are investigated and a standardized test evaluated. The test data presented clearly show that the test, as previously specified by AREA or presently...

Freight Pipeline, Rail, and Truck Cost Comparison
This paper describes the use of four models for comparing the cost of transporting manufactured products via freight pipeline, truck, truck on flat car (TOFC), and rail carload. It was...

Track Structure Design by Mathematical Models
For the design and evaluation of track structures, previous mathematical models are inadequate because they are too simplified. Recently developed finite element models are too cumbersome...

Railway-Bridge Impact: Simplified Train and Bridge Model
A lumped mass model of a railway bridge is developed where only the vertical degree-of-freedom for each joint is considered. The vehicle system is idealized as a three degree-of-freedom...

Railroad Ballast Load Ranking Classification
An investigation into the permanent deformation and degradation ranking (i.e., load ranking) of railroad ballast subject to laboratory repeated loading at a stress level comparable with...

Track Gage Widening: Model Study
The paper contains a study of two models which represent the mechanisms of gage widening and rail roll in a track subjected to vertical, lateral, and longitudinal loading. The deformation...

Washington METRO: A People's Eye View
Much has been written about the technical aspects of this 101 mile, 86 station system. But as important in Washington, D.C. were the political aspects. Backed by Presidents; scrutinized...

First Line of Atlanta's New Transit System Opens
With lessons learned from San Francisco and Washington, D.C., Atlanta hopes to avoid some of the problems encountered by those cities in building and operating its new transit system....

 

 

 

 

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