The superelevation of a railroad track is the number of inches that the outside rail is raised to prevent side thrust on the wheel flanges of cars rounding the curve at rated speed. Determine the superelevation e for a track having a gauge of 4ft 8.5 in. of 2000-ft radius at a rated speed of 60 mph. What is the flange pressure P on the wheels of a 100,000-lb car that rounds the curve at 80 mph?
The superelevation of a railroad track is the number of inches that the outside rail is raised to prevent side thrust on the wheel flanges of cars rounding the curve at rated speed. Determine the superelevation e for a track having a gauge of 4ft 8.5 in. of 2000-ft radius at a rated speed of 60 mph. What is the flange pressure P on the wheels of a 100,000-lb car that rounds the curve at 80 mph?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The superelevation of a railroad track is the number of inches that the outside rail is raised to prevent side thrust on the wheel flanges of cars rounding the curve at rated speed. Determine the superelevation e for a track having a gauge of 4ft 8.5 in. of 2000-ft radius at a rated speed of 60 mph. What is the flange pressure P on the wheels of a 100,000-lb car that rounds the curve at 80 mph?
Answer: e = 6.78 in. ; P = 9230 lb
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