Test results of first-order class III leveling

Details

• Personal Author:
  Whalen, Charles T. ; Balazs, Emery I.
• Corporate Authors:
  National Geodetic Survey (U.S.)
• NOAA Program & Office:
  NOS (National Ocean Service) ; NGS (Office of National Geodetic Survey)
• Description:
  The National Geodetic Survey has programmed for a partial releveling of the firstorder, National vertical control net and for readjustment of the entire first- and second-order net during 1977 through 1985. In the past, first-order, class I or II, double-run leveling was used exclusively to establish and relevel the first-order net. Programmed funds permit releveling and replacing destroyed marks on approximately half of the National first-order net by double-run leveling, or on essentially the entire net by new first-order, class III, single-run leveling. The new specifications, based on an analysis of leveling errors, were field-tested on a level line from Waldorf to Baltimore, Md. between December 1975 and April 1976. Test results indicate that first-order,
  
  class III leveling can provide a viable alternative to first-order, class I leveling for releveling the first-order, National vertical control net.
  
  
• Keywords:
  Leveling
• Series:
  NOAA technical report NOS NGS   68-4
• Format:
  PDF
• Document Type:
  Technical Report
• License:
  https://creativecommons.org/publicdomain/zero/1.0/
• Rights Information:
  CC0 Public Domain
• Compliance:
  Library
• Main Document Checksum:
  urn:sha-512:47468bdb1a95a15945193837e7579a71dfa983f8d66fbc113b84670e4ba3d85b41ce711aa169fa06b0c283f2b7023f4c5314aeb45874d3ecbcc2b6d1b74940e5
• Download URL:
  https://repository.library.noaa.gov/view/noaa/32469/noaa_32469_DS1.pdf
• File Type:
  [PDF - 68.85 MB ]