INTRODUCTION TO PHOTOGRAMMETRY AND AERIAL SURVEYS

THE USE OF PHOTOGRAMMETRY AND AERIAL SURVEYS IN HIGHWAY ENGINEERING IS REVIEWED. SOME OF THE ADVANTAGES OF AERIAL SURVEYS IN HIGHWAY ENGINEERING ARE: (1) THEY PROVIDE AMPLE QUALITATIVE INFORMATION PERTAINING TO PHOTOGRAPHY, SOILS, DRAINAGE, AND LAND USES, (2) THEY PROVIDE THE MEANS TO MEASURE THE QUANTITATIVE DATA FOR PROPERTY BOUNDARIES, FOR SITES OF CONSTRUCTION MATERIALS, AND FOR ALL FACILITIES THAT WILL BE AFFECTED BY THE FUTURE HIGHWAY, (3) THEY PROVIDE A MEANS OF CORRELATING TO THE TYPE AND INTENSITY OF LAND USE THE LAND-USE AND TRAFFIC-GENERATION FACTORS AS DEVELOPED FROM ORIGIN AND DESTINATION TRAFFIC STUDIES, (4) THEY SAVE MAN-DAYS ON SURVEYS AND ON DESIGN, (5) THEY MAKE INACCESSIBLE AREAS ACCESSIBLE, (6) THEY ELIMINATE THE NEED OF ON-THE-GROUND FLAGGING OF ROUTES IN THE RECONNAISSANCE SURVEY STAGES AND OF STAKING P-LINES IN THE PRELIMINARY SURVEY STAGE, (7) THEY ELIMINATE ANY NEED FOR CUTTING TREES AND OTHER VEGETATION FOR RECONNAISSANCE SURVEY PURPOSES AND FOR STAKING P-LINES AND MEASURING PROFILES AND CROSSECTIONS, (8) THEY PERMIT THE COMPLETION OF DESIGNS AND ESTABLISHMENT OF THE LOCATION FOR YEARS-IN- ADVANCE PROCUREMENT OF RIGHTS-OF-WAY, (9) THEY IMPROVE THE POSSIBILITIES OF REDUCING OR ELIMINATING INTERFERENCE WITH PRESENT LAND USE BY AVOIDING SEVERENCES AND USING THE LESS VALUABLE LANDS, (10) THEY SERVE AS A RELIABLE GUIDE FOR LOCATION OF SECTION LINES AND PROPERTY LINES, AND FOR TYING RIGHTS-OF-WAY LINES AND OTHER PROPERTY LINES TOGETHER BY DESCRIPTION IN THE USE OF PLANE COORDINATE TIES TO GROUND SURVEY MARKERS, (11) THEY PROVIDE DIMENSIONS FOR ELECTRONIC METHODS OF COMPUTATION TO ASCERTAIN EXCAVATION AND EMBANKMENT QUANTITIES AND DETERMINE PAY QUANTITIES ON CONTRACT CONSTRUCTION, (12) THEY REDUCE TIME-CONSUMING RECONNAISSANCE SURVEYS ON THE GROUND BY ENABLING ENGINEERS TO BRING THE TOPOGRAPHY AND LAND USE INTO THE OFFICE FOR INTENSIVE AND EXTENSIVE EXAMINATION AND EVALUATION, (13) THEY MAKE DETERMINATION AND COMPARISON OF FEASIBLE ROUTE ALTERNATIVES EASY TO ACCOMPLISH IN A RELIABLE AND FACTUAL MANNER, (14) THEY ASSURE THAT THE BEST ROUTE AND THE BEST LOCATION ON THAT ROUTE HAVE BEEN DETERMINED THROUGH FULL CONSIDERATION OF EVERY ASPECT OF THE CONTROLS OF LOCATION AND DESIGN, AND (15) THEY ARE EFFECTIVE AND EFFICIENT METHODS OF MAKING CONDITION AND INVENTORY SURVEYS. IT IS CONCLUDED THAT RESULTS OBTAINED BY FULL USE OF PHOTOGRAMMETRY AND AERIAL SURVEYS ARE MUCH BETTER THAN THOSE OBTAINED BY GROUND SURVEYS ONLY.

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  • Accession Number: 00202755
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Jul 28 1994 12:00AM