Measuring Pile Deflections with Inclinometer

by Jai B. Kim, (A.M.ASCE), Assoc. Prof. of Struct. Engrg.; Bucknell Univ., Lewisburg, PA,
Robert J. Brungraber, (M.ASCE), Prof. and Chmn. of Civ. Engrg.; Bucknell Univ., Lewisburg, PA,

Serial Information: Journal of the Geotechnical Engineering Division, 1974, Vol. 100, Issue 7, Pg. 867-869

Document Type: Journal Paper


As part of an extensive study of the resistance to lateral loads of piles in pile groups, a series of full-scale tests was conducted. The selected test site was representative of field conditions that the Pennsylvania Department of Transportation encountered during design/construction of bridges. The purpose of this note is to report on their experience in measuring the lateral displacements of the piles with an inclinometer that the Slope Indicator Company supplied. Based on the reported results, inclinometers of currently available sensitivity appear unsuitable for measuring lateral displacements of piles in the field where multiple piles are joined by rigid caps.

Subject Headings: Pile tests | Piles | Displacement (mechanics) | Lateral loads | Load tests | Pile groups | Bridge tests | Bridge design

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