USE OF THE ZEISS STEREOTOPE FOR HIGHWAY ENGINEERING PURPOSES

THE NEED TO EVALUATE A THIRD ORDER PHOTOGRAMMETRIC INSTRUMENT FOR GENERAL USE TO PROCURE DATA FOR HIGHWAY ENGINEERING PROMOTED THE IDEA OF TESTING THE ZEISS STEREOTOPE. TO DETERMINE WHETHER THE STEREOTOPE WOULD MEET BETTER THAN THIRD-ORDER ACCURACY REQUIREMENTS, A COMPARATIVE STUDY OF FIRST AND THIRD ORDER PHOTOGRAMMETRIC INSTRUMENTS WAS MADE AT THE OHIO STATE UNIVERSITY. AN EVALUATION IS PRESENTED OF THE STEREOTOPE IN TERMS OF THE ACCURACY REQUIREMENTS SET FOR PROCUREMENT OF CROSS-SECTION DATA USED IN COMPUTING EARTHWORK QUANTITIES. THE COMPARATIVE STUDY CONSISTED OF 2 PARTS. THE FIRST PART WAS A CALIBRATION TEST OF THE STEREOTOPE TO DETERMINE THE FEASIBILITY OF USING IT FOR LARGE-SCALE MAPPING AND CROSS-SECTION DATA PROCUREMENT. THE SECOND PART CONSISTED OF EVALUATING IT IN TERMS OF SPOT- HEIGHT ACCURACY AND EARTHWORK QUANTITY MEASUREMENTS OF FINAL-PAY QUANTITIES. TO EVALUATE THE ACCURACY OF ITS MEASURING OF SPOT HEIGHTS, THE LATTER WERE COMPARED WITH THOSE READ BY MEANS OF THE WILD A-7 AUTOGRAPH. THE PHOTOGRAPHY OF A 1-MILE SECTION OF INTERSTATE ROUTE HAD BEEN TAKEN FOR DETERMINING FINAL-PAY QUANTITIES ON AN INTERSTATE HIGHWAY IMPROVEMENT PROJECT CONSTRUCTED IN 1960 BY THE OHIO DEPARTMENT OF HIGHWAYS. IT WAS FOUND THAT WITH NORMAL GROUND-CONTROL DATA AND AERIAL PHOTOGRAPHIC OPERATIONS THE STEREOTOPE WOULD BE AN INSTRUMENT AS SATISFACTORY AS THE KELSH PLOTTER FOR PROCURING CROSS-SECTION DATA FOR FINAL-PAY QUANTITY MEASUREMENTS, PROVIDED THAT CARE IS TAKEN IN PERFORMING THE PARALLAX MEASUREMENTS, USING EITHER DIMENSIONALLY STABLE PLASTIC-BASE PRINT FILM OR GLASS DIAPOSITIVES. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 13-31
  • Monograph Title: Highway aerial surveys - controls and rights-of-way 1962
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00202642
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Jun 3 1994 12:00AM