For rail projects, no flange way gap can be greater than 2.5" where passenger circulation paths cross tracks at grade (i.e. a street-level pedestrian crossing over streetcar tracks)....
Search Results "Rail Crossing"
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Flange way gap
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R302.5 Grade
The grade requirements in R302.5 apply to sidewalks and other pedestrian circulation paths, pedestrian street crossings and at-grade rail crossings, and pedestrian overpasses and underpasses...
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R305.2.5 Pedestrian At-Grade Rail Crossings
R305.2.5 Pedestrian At-Grade Rail Crossings....