3 results found
Can some please clarify this requirement: " Inspection of external tie features include" ... "section depth (detection of the effects of tie abrasion in the ballast)"
It is not clear to me how section depth and effects of abrasion in ballast are related.1 vote
The reference material does not seem to comprehensively describe methods of assessing the internal conditions of concrete ties. Would it be sufficient to identify internal issues based on visible symptoms, such as splitting and bursting? Would a second, comprehensive step of evaluation of potential issues as identified in a broad, at-speed test be considered for this topic?1 vote