During regional planning studies, the engineering geologists must choose among diverse, competing data sources, each having distinct cost and accuracy characteristics. Recognizing a need for guidelines in this area, the Missouri Division of Geology and Land Survey, Rolla Missouri, evaluated a sequence of alternative sources of data on the Cape Girardeau quadrangle in southeastern Missouri. Several map sources were compared at three scales: statewide (1:500 000), countywide (1:62 000), and quadrange (1:24 000). Engineering and geologic considerations were used to establish criteria for 10 land uses associated with residential development. These criteria were used with the appropriate source data to develop a sequence of limitations maps at each scale. Extensive field and laboratory programs were carried out to prepare the best-possible data-reference source with which other map products could be compared. A usefulness index was formulated to measure the degree of agreement between the competing interpreted products and the reference standards. Manual computation of this index proved impractical (a 10-km sq (4-mile sq) area required 1 person day/comparison). Thus, computer methods were used that permitted the rapid comparison of approximately 32000 cells covering the quadrangle and the computation of the resulting usefulness index for about $50.00 (including all salaries and data-processing costs). (Authors) the uniformity of such map units for interpretive purposes

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 69-74
  • Monograph Title: Mechanics of track support, piles and geotechnical data
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00315302
  • Record Type: Publication
  • ISBN: 0309029880
  • Files: TRIS, TRB
  • Created Date: Sep 16 1980 12:00AM