eLibrary Search
The FRA eLibrary contains all the documents that are found throughout the FRA Public Website. Multiple pages on the website may link to the same eLibrary item based on its set of metatdata.
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Technical Reports
Mechanics of Ballast Compaction Volume 3: Field Test Results for Ballast Physical State Measurement
Keywords: Field Tests, Density, Bearing Test, Lateral Push Tie Test
Abstract: The important mechanical processes which influence the ballast physical state in track are tamping, crib and shoulder compaction and train traffic. Three methods of assessing...
Technical Reports
Mechanics of Ballast Compaction Volume 4: Laboratory Investigation of the Effects of Field Compaction Mechanics
Keywords: Field Tests, Density, Bearing Test, Lateral Push Tie Test
Abstract: This report describes a preliminary series of laboratory tests which attempt to simulate some of the effects of maintenance procedures and traffic on the physical state of ballast...
Technical Reports
Mechanics of Ballast Compaction Volume 5: Summary Report
Keywords: Field Tests, Density, Bearing Test, Lateral Push Tie Test, Track Maintenance, Laboratory Tests
Abstract: This report summarizes the results of research on the mechanics of ballast compaction. Details are provided in four preceding reports. The scope of this summary includes: 1) a...
Technical Reports
Mechanics of Ballast Compaction Volume 1: Technical Review of Ballast Compaction and Related Topics
Keywords: Field Tests, Laboratory Tests, Track Design, Models, Maintenance, Performance, Economics
Abstract: The purpose of the research program on the mechanics of ballast compaction is to determine the influence of mechanical compaction on the ballast physical state and its consequence...
Technical Reports
Radial Axle Truck Test Results Report
Keywords: Performance Tests, Curve Negotiation, Stability
Abstract: This report describes the performance tests conducted on a pair of prototype radial axle trucks developed by GSI. The trucks tested were purchased from GSI by Amtrak and tested by...