This program permits computer generation of track profiles using a Calcomp plotter. Accurate milepost location of each track element is required. Unless existing manual records are both accurate and current, new data from the field is necessary. This can be accomplished with a track geometry car or any test car where accurate distance measurement is an output. The program utilizes data in a three-step process. The first is to input the type and milepost location of each track element in the symbol master. The output from this step consists of two reports--a symbol listing in milepost order and the distance between each milepost. Elements include yard track locations, spring switches, railroad crossings, private crossings, three types of public crossings, railroad bridges, rivers, underpasses, overhead bridges, tunnels, hot box detectors, 13 types of train signals. The second step merges the symbol master data from step 1, grade and curve data from the track characteristics master, and milepost locations from the milepost master. Output from this step is a printed listing of each track element in milepost order and a plot tape. The third step uses the plot tape as input to drive a Calcomp plotter and produce the track profile (generally on a paper original). Plot scale is two inches to the mile (5280 feet). Height of the profile is 4 1/2 inches and can be of any length. Plot consists of a milepost line dividing distance between adjacent mileposts into ten equal parts regardless of actual distance, a grade line, a track line showing single track, double track, sidings, spurs, and all track elements and a curve line.

  • Corporate Authors:

    Southern Railway System

    99 Spring Street, SW
    Atlanta, GA  United States  30303
  • Authors:
    • Brooks, B L
  • Publication Date: 1973

Subject/Index Terms

Filing Info

  • Accession Number: 00098698
  • Record Type: Publication
  • Source Agency: American Railway Engineering Association
  • Files: TRIS
  • Created Date: Aug 27 1976 12:00AM