The two-part report provides guidance on the design and construction of direct- fixation track systems. Part A includes sections describing track-design principles and material-evaluation methods for direct-fixation fasteners and track, as well as example specifications and commentary for direct-fixation fasteners, direct-fixation fastener qualification and production tests, direct-fixation track construction, and materials used in direct-fixation applications. Part B of the report provides data, evaluations, field reviews, and analyses of direct-fixation fasteners from a variety of sources to understand their characteristics and proper application more fully.  View Report

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