The guard check and guard face gages in frogs shall be within the limits prescribed in the following table-- ----------------------------------------------------------------------------------------------------------------
Guard check gage The distance
between the gage line of a frog
to the guard line \1\ of its Guard face gage The distance between
guard rail or guarding face, guard lines \1\, measured across the
Class of track measured across the track at track at right angles to the gage
right angles to the gage line line \2\, may not be more than--
\2\, may not be less than--
----------------------------------------------------------------------------------------------------------------Class 1 track........................... 46\1/8\............. 4 5\1/4\Class 2 track........................... 46\1/4\............. 4 5\1/8\Class 3 and 4 track..................... 4 6\3/8\............ 45\1/8\Class 5 track........................... 46\1/2\............. 4 5----------------------------------------------------------------------------------------------------------------\1\ A line along that side of the flangeway which is nearer to the center of the track and at the same elevation
as the gage line.\2\ A line \5/8\ inch below the top of the center line of the head of the running rail, or corresponding
location of the tread portion of the track structure.
[GRAPHIC] [TIFF OMITTED] TR22JN98.006
[GRAPHIC] [TIFF OMITTED] TR22JN98.007