Dowel and Tie Bar location with Ground Penetrating Radar
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Transcript of Dowel and Tie Bar location with Ground Penetrating Radar
Data Collected using GSSI’s StructureScanTM Mini HR
Geophysical Survey Systems, Inc.
Dowel Bar (cages) and Tie Bar Location Solutions using Ground Penetrating
RADAR (GPR)
Map Position and Depth of Dowel Bars and Cages
Determine the Length of the Dowel Bar and Its Location in Reference to the Joint
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Copyright © 2013 Geophysical Survey Systems, Inc.All Rights Reserved
Dowel bars - Scanning on one side of a joint, perpendicular to the dowel bars
Length of dowel bars 18”
Bottom view is the Focus Mode view. Note the dowel bar and the cage.
Bottom of cage
By scanning on each side of the joint or saw cut, surveyors can map the position of each dowel bar and determine whether it is positioned correctly or skewed. Depth of the dowel bar may also be determined.
Determine Tie Bar Location for QA/QCBy scanning perpendicular to a joint, determine the location of tie bars.
Tie bar location
Processed 3D data of dowel barsBy scanning parallel and directly over one dowel bar, one may determine the length of the dowel bar and the location of the dowel bar in relation to the joint.