An investigation into the strength of the 109 lb/yd flat bottom rail joint (LIB-BRR-00855)

Continuous observation of a main line length of B.S. 110 lb/yd. flat bottom rail indicated that there was a noticeable tendency for cracks to develop from fishbolt holes before the full permissible head wear had been obtained. Since the 110 lb/yd. rail may be regarded as the prototype of the...