Brief Report
Sep 1973
Use of Trees as Bench Marks in Expansive Clays
Publication: Journal of the Surveying and Mapping Division
Volume 99, Issue 1
Abstract
The use of fire hydrants, utility poles, and trees as temporary or permanent bench marks for construction control is well established in surveying practice. Recent observations of trees growing in an area of expansive clay indicate that trees and other shallow landmarks may not be acceptable as bench marks for long-term survey control. This note presents the results of observations performed on four Post Oak trees and one shallow concrete monument over an approximate 6-month (fall-to-winter-to-spring). Resulting vertical movements observed are presented. Further investigation of the magnitude of movements during a hot, dry summer period appear necessary to fully define the possible magnitude of annual movements.
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Published In
Journal of the Surveying and Mapping Division
Volume 99 • Issue 1 • September 1973
Pages: 149 - 151
Copyright
© 1973 American Society of Civil Engineers.
History
Published in print: Sep 1973
Published online: Feb 12, 2021
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Authors
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Robert C. Davis, AM.ASCE
Soils Engr., Trinity Engrg. Testing Corp., Austin, TX
Richard L. Tucker, M.ASCE
Assoc. Dean of Engrg., Univ. of Texas at Arlington, Arlington, TX
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.