Map Uses, Scales and Accuracies for Engineering and Associated Purposes

Abstract

This publication is designed to aid engineers and others in obtaining maps suitable for use in engineering and associated work. Such maps must have the proper contour interval, map scale, accuracy, symbols, and content to meet the requirements of the type of project and the stage in its accomplishment and of the character of the topography and the present and planned land use. Primary consideration is given to large-scale maps required in planning, design, and surveys. Recommendations are presented for the determination of map scales and contour intervals, based on experience and a study of past and current mapping practice; for the specification and testing of map accuracy, based on a presented alternative to the U.S. National Map Accuracy Standards; and for standardization on large-scale engineering maps of symbols and content, based on a review of current publications and practice in this area and a concise comparison of nine computer graphics software systems. Also included are: (1) Data on the scales, names, use, purpose, and sources of maps available from U.S. Government agencies; (2) the addresses of State agencies concerned with mapping; and (3) a bibliography on readily available publications on subjects relating to the purpose and content of this publication.

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