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16 Feb 1996

Emergency Orders

Tonawanda Island Railroad; Emergency Order to Prevent Operation of Trains on Bridge 7708810

Subject Bridge and Structures Safety

Emergency Order Number
Emergency Order 19, Notice No. 1

1 Dec 1993

Technical Reports

Bridge Tests by Using the Track Loading Vehicle

Author
Satya P. Singh

Subject Bridge and Structures Safety

Keywords: Bridges, Trusses, Static Tests, Dynamic Tests, Track Loading Vehicle, Influence Line, Impact Percentage, Damping Ratio, Strain, Axial Force, Power Spectral Density, Mode, Frequency

Abstract: The Track Loading Vehicle (TLV) was used to conduct a series of bridge tests. The Big Creek Through Truss Bridge on the Norfolk Southern Railroad in Tennessee was used for thee...

Report Number
R-837
Office
RRD

16 Jan 1991

Technical Bulletins

Reissue of Hours of Service Signal Interpretations Booklet

Author
Acting Associate Administrator for Safety

Subject Hours of Service

Abstract: The booklet, "The Hours of Service Act and Signal Service" was originally issued by the Federal Railroad Administration in 1981. It was subsequently revised and reissued in 1983...

Bulletin Number
G-91-02
Discipline
General

1 Dec 1981

Technical Reports

Dynamic Analysis of a Vehicle/Bridge System for Calculation of Impact Loads

Author
Satya P. Singh, Sam P. Singh, V. K. Garg

Subject Bridge and Structures Safety

Keywords: Bridge Design, Bridge Impact, Bridge Stresses, Mathematical Model

Abstract: A mathematical model to obtain various generalized physical properties, such as mass, stiffness, damping and loads, has been derived to evaluate the dynamic response of a coupled...

Report Number
R-447
Office
RRD

1 Mar 1980

Technical Reports

Track and Bridge Maintenance Research Requirements

Author
Reece H. Wengenroth, Harry P. Clapp

Subject Bridge and Structures Safety, Tracks & Structures, Evaluation

Keywords: Ballast, Subgrade, Cross Ties, Special Track-work, Bolted Joints, Maintenance and Rail

Abstract: This report includes the design of seven research plans in the area of track and bridge maintenance. The railroad industry was surveyed to ascertain the maintenance problems of...

Report Number
FRA/ORD-80/11
Office
RRD