SYMPOSIA PAPER Published: 29 July 2019
STP161120170159

A Framework for Nondestructive Testing Used in Foundation Reuse Projects

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The reuse of existing foundations is considered in various construction projects to save time and costs while avoiding unnecessary interference with other underground objects. Because the design and as-built drawings might not be complete and questions may arise regarding the condition of the foundations, a detailed investigation is a prerequisite for the planning process in most cases. Nondestructive testing (NDT) techniques are a core part of this endeavor. The processes and procedure for foundation reuse planning are not yet standardized, and the possibilities and limitations of NDT methods are not known to many planners and stakeholders. The German research project REFUND (2014–2016) has developed charts for the planning and investigation process that consider available standards and the current state of the art in NDT. These charts are separately available for single and strip, slab, and pile foundations. Available NDT methods have been compiled and evaluated for specific tasks at these foundation types, including their respective limitations. The procedures have been successfully tested in two real-world projects. The results from these projects enable planners to improve the reliability of the process while potentially saving significant resources. This paper discusses the procedures for pile foundations and demonstrates the use of various NDT methods in a project on the reuse of electrical tower foundations.

Author Information

Niederleithinger, Ernst
Federal Institute for Materials Research and Testing (BAM), Berlin, DE
Katzenbach, Rolf
Technical University of Darmstadt, Darmstadt, DE
Hillmann, Stephan
Specht Kalleja + Partner Beratende Ingenieure GmbH, Berlin, DE
Schallert, Matthias
Gesellschaft für Schwingungsuntersuchungen und dynamische Prüfmethoden mbH (GSP), Mannheim, DE
Unseld, Holger
Cteam Consulting und Anlagenbau GmbH, Siegburg, DE
Willmes, Michael
Implenia Construction AG, Mannheim, DE
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Details
Developed by Committee: D18
Pages: 238–253
DOI: 10.1520/STP161120170159
ISBN-EB: 978-0-8031-7668-3
ISBN-13: 978-0-8031-7667-6