CROSS-SECTIONS BY PHOTOGRAMMETRY

When exceptional loads have to be conveyed by rail, measurements must be made along the route to determine by how much the normal loading gauge may be infringed. The Swiss Federal Railways has devised a method based on stereoscopic photography and has built a special measuring vehicle that houses the appropriate equipment. Stereo photographs coupled with a special viewing attachment permit the recording of continuous profiles as a cross-sectional diagram. The vehicle is equipped with a dark room to provide immediate on site inspection of exposures. An electric tractor is used to take the vehicle to site and also provides a 220V supply for the spotlight, heating, and charging of the car-lighting batteries. In transit speeds up to 56 mph are permitted. While operating, the speed is limited to 18 mph.

• Corporate Authors:

  Temple Press Limited

  161-166 Fleet Street
  Longon EC4,   England 
• Publication Date: 1963-6-28

Media Info

• Features: Photos;
• Pagination: p. 723
• Serial:
  • RAILWAY GAZETTE
  • Volume: 118

Subject/Index Terms

• TRT Terms: Dynamic loads; Gage (Rails); Inspection; Inspection cars; Maintenance of way; Photogrammetry; Railroad tracks; Structural design; Subgrade (Pavements); Technology; Train operations
• Uncontrolled Terms: Track geometry
• Geographic Terms: Switzerland
• Old TRIS Terms: Track gauge; Track maintenance equipment; Train load
• Subject Areas: Design; Maintenance and Preservation; Railroads;

Filing Info

• Accession Number: 00037850
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 8 1994 12:00AM