Accession Number : AD0283046

Title :   REDUCTION OF TRIANGULATION CROSS SECTION FIELD NOTES FOR GLEN CANYON

Corporate Author : BUREAU OF RECLAMATION DENVER COLO

Report Date : JUN 1960

Pagination or Media Count : 1

Abstract : Glen Canyon Dam is located in a reach of the Colorado River where the canyon walls are nearly vertical. It was found that the most practical way of obtaining accurate data for cross sections was to paint marks on the canyon walls and to sight on those marks with transits located on base lines established on the opposite side of the river. Three transits were located on a base line on the opposite side of the river from the canyon wall being cross-sectioned. The base line was approximately at right angles to the crosssection line. One transit was located on the cross-section line, and one on either side of the line being cross-sectioned. A program is given which will compute the horizontal and vertical distances to each cross-section point from the center transit. All three transits are assumed to have the same H. I. for any one set of data. (Author)

Descriptors :   *CIVIL ENGINEERING, CONFIGURATION, CONSTRUCTION, DAMS, DIGITAL COMPUTERS, PROGRAMMING (COMPUTERS), TERRAIN, TRIGONOMETRY

Distribution Statement : APPROVED FOR PUBLIC RELEASE