REMOTE BASE LINE METHOD OF MEASURING HORIZONTAL AND VERTICAL CONTROL

BASIC HORIZONTAL AND VERTICAL CONTROL MEASURING METHODS ARE DISCUSSED. THE REMOTE BASE LINE METHOD IS SPECIFICALLY DESCRIBED. THIS METHOD IS BASED ON THE PRINCIPLE OF MATHEMATICALLY PASSING A CIRCULAR CURVE THROUGH THREE POINTS-- THE SETUP POINT OF THE ANGLE-MEASURING INSTRUMENT AND TACK POINTS IN TWO STATES, EACH CONSTITUTING AN END OF THE REMOTE BASE LINE. THE FOURTH MEASURING POINT IS A TACK IN A STAKE ON THE REMOTE BASE LINE SOMEWHERE BETWEEN ITS ENDS. THE FOURTH POINT IS NECESSARY FOR ACCOMPLISHING TWO ANGLE MEASUREMENTS REQUIRED FOR COMPUTING THE DISTANCE FROM THE POINT WHERE THE ANGLE-MEASURING INSTRUMENT IS SET UP TO THE REMOTE BASE LINE. ELECTRONIC METHODS OF COMPUTATION MAKE THE REMOTE BASE LINE METHOD MORE EFFECTIVE AND EFFICIENT THAN IT WAS WHEN COMPUTATION WAS MADE BY USE OF LOGARITHMS AND/OR DESK-TYPE CALCULATORS. THE ESSENTIAL SUPPLEMENTAL CONTROL DATA (HORIZONTAL AND VERTICAL) ARE IMMEDIATELY AVAILABLE IN USABLE FORMS FOR PHOTOGRAMMETRIC ACCOMPLISHMENT OF THE MAPPING AND FOR MAKING ALL OTHER MEASUREMENTS REQUIRED IN THE PERFORMANCE OF HIGHWAY ENGINEERING. THE PRINCIPLES AND EQUATIONS OF THE REMOTE BASE LINE METHOD ARE DISCUSSED AND ANALYZED.

  • Record URL:
  • Supplemental Notes:
    • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
  • Authors:
    • Pryor, William T
  • Discussers:
    • Howe, R T
    • Winsor, D E
    • Preston, E S
  • Conference:
  • Publication Date: 1962

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: pp 32-50
  • Monograph Title: Highway aerial surveys - controls and rights-of-way 1962
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00202646
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Jun 24 1994 12:00AM