|
|
|
Title: FROM MAP TO COMPUTER
Accession Number: 00202684
Record Type: Component
Abstract: A NEW METHOD OF OBTAINING DIGITAL TERRAIN DATA FOR EARTHWORK QUANTITY COMPUTATION IS PRESENTED. THE PROCEDURE IS BEING USED IN THE DESIGN OF A 200-MI SECTION OF INTERSTATE HIGHWAY ON NEW LOCATION. CROSS-SECTION DATA ARE REFERRED TO A CALCULATED CENTERLINE, WHICH IS DEVELOPED FROM A STUDY OF AERIAL PHOTOGRAPHS PRIOR TO MAP COMPILATION. THE METHOD PERMITS KEY PUNCHING FOR ELECTRONIC COMPUTERS DIRECTLY FROM MANUSCRIPTS PREPARED BY THE PHOTOGRAMMETRIC MAPPING CONTRACTORS. ALTHOUGH THE METHOD WAS DEVELOPED PRIMARILY FOR COMPARATIVELY FLAT TERRAIN IT HAS ALSO BEEN ADAPTED FOR USE IN TAKING DIGITAL DATA FROM CONTOURS OF TOPOGRAPHIC MAPS. TIME STUDIES WERE MADE AND COMPARATIVE COSTS DEVELOPED FOR THIS TECHNIQUE AND FOR OTHER METHODS OF TAKING DATA FROM CONTOURS. THESE COSTS WILL SERVE AS A GUIDE IN ESTIMATING THE PROBABLE VALUE OF AUTOMATION AS A CONNECTING LINK BETWEEN CONTOURS OF THE MAPS AND THE COMPUTER. COMPLETE AUTOMATION FROM PLOTTER TO COMPUTER BY RESETTING THE STEREOMODELS IS ALSO DISCUSSED BRIEFLY. /AUTHOR/
Supplemental Notes: No 283, pp 49-55, 4 FIG, 1 TAB, 5 REF 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.
Monograph Title: Monograph Accession #: 01410668
Authors: Funk, L LPagination: 7p
Publication Date: 1961
Serial: Conference:
39th Annual Meeting of the Highway Research Board
Location:
Washington DC, United States Media Type: Digital/other
TRT Terms: Identifier Terms: Uncontrolled Terms: Subject Areas: Design; Highways
Files: TRIS, TRB
Created Date: Sep 3 1994 12:00AM
More Articles from this Serial Issue:
|
