Railroad Crossing Study: Volume II: Appendices
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1992-01-31
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Edition:Volume 2 of 2
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Abstract:This report presents the results of the survey of 54 railroad grade crossings in South Dakota. Three basic types of crossings were studied: rubber, asphalt, and timber. The crossings were studied for the effect on roughness of highway and rail traffic, soil conditions, drainage, and age. Construction of five crossings was also observed, in order to evaluate the adequacy of the construction procedures and practices applied in South Dakota. The results of the study indicate that the main factors leading to the deterioration of railroad crossings include: differential settlement between crossings and the approaches, surfacing material breakdown, inadequate maintenance, and poor construction procedures regarding the foundation materials for the crossings. Based on the results of the surveys and inspections, conclusions regarding modes of distress and the adequacy of construction practices were formed. Recommendations were given in regard to measures that should be implemented to improve the performance of railroad crossings in South Dakota. The report stresses the need for semiannual cleaning and inspection of crossings, as well as repair and maintenance of items needing attention. This volume, Volume II, of the report contains Appendix A, the results of the field investigation, and Appendix B, gradation curves.
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