Fourth General Adjustment of the Precise Level Net in the United States and the Resulting Standard Elevations (Classic Reprint) - Hardcover

William Bowie

Hardcover

ISBN 10: 0656388218 ISBN 13: 9780656388219

Publisher: Forgotten Books, 2018

Synopsis

Explore the latest results from the national network of precise leveling and see how elevations are established across the United States.

This edition presents the fourth general adjustment of the precise level net, detailing methods, corrections, and standard elevations used by engineers and surveyors in early 20th-century America. It covers why orthometric corrections were adopted west of the Mississippi and explains how elevations are provided in both feet and meters for practical field use.

The book lays out the scope of the leveling network, the improvements over previous adjustments, and the way standard elevations are determined for bench marks. It includes discussion of new leveling lines added to the network, checks on loop closures, and the treatment of high-altitude adjustments. Readers will find tables and descriptions that support engineering projects and land surveys.

• Clear explanation of the fourth general adjustment and its purpose
• Details on orthometric corrections and dual-unit elevations (feet and meters)
• Insights into new leveling lines and how closures were verified
• Tables and references to bench marks and standard elevations for practical use

Ideal for readers of historical geodesy, surveying professionals, and researchers needing reliable elevation data from this period.

Edition details

• Publisher: Forgotten Books
• Publication date: 2018
• Language: English
• ISBN 10: 0656388218
• ISBN 13: 9780656388219
• Binding: Hardcover
• Number of pages: 344