U.S. Transit Track Restraining Rail. Volume II: Guidelines

摘要

This report covers a study of restraining rails in transit track, which is part of the current research program of UMTA and was initiated: (1) to assist in the analysis, design, and maintenance and operation of transit track; (2) to compile guidelines for the use of restraining rails; and (3) to devise concepts for possible improvements. This report, Volume II, contains guidelines derived from the study of transit restraining rail requirements and practices, and includes consideration of practices in the railroad industry and other industries. It also includes recommended standards and practices for design, installation, maintenance and inspection, and suggestions for the evaluation of requirements for restraining rail installations. This report also presents descriptions and limits for measurable conditions, such as gage and flangeway width, and descriptions of conditions that normally are not measurable.