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Category Measurement Standard Source
Axis weight(Q) tf 22(25) Article18, PC sleeper design specification
Article 62, National railroad construction rule
Axis weight per tire(P) 11(12.5)
Design speed ㎞/h 100 Article 5. National railroad construction rule
Arrangement of sleepers 1st grade line 62.5 16ea/ 10m
2nd grade line
Interval
(a) 3rd grade line
4th grade line
Geometrical Moment of Inertial (l) 1st grade line 4 3,090 60kg rail
2nd grade line
3rd grade line 1,960 50kg N rail
4th grade line
 
 
Category Measurement Standard Source
Axis weight(Q) tf 16 Concrete standard specification
Axis weight per tire(P) 8 Standard for concrete structure design
Design speed ㎞/h 150 Article 5. National railroad construction rule
Arrangement of sleepers 62.5 16ea/ 10m
Interval
Duty
Cycle(i)
Design
speed(V)
150km/h
i 1.77 Formula from American Railroad Engineering Agency
Geometrical Moment of Inertial(I) 4 3,090 60kg
1,960 50kg