Inspection Of Timber Construction
By Measuring Drilling Resistance Using Resistograph F300-S
Author(s)
R. Kappel & C. Mattheck
Abstract
Inspection of timber construction by measuring
drilling resistance using Resistograph F300-S
R. Kappel & C. Mattheck
Institute for Materials Research II
Forschungszentrum Kavlsvuhe, Germany.
Abstract
Preservation of historical and cultural heritage architecture requires information
on the condition of building material. In case of construction timber, wood is a
natural material and, if not preserved in time, subject to biological and physical
decomposition. Timber constructions have to be inspected in order to evaluate
stability and safety. To prevent unnecessary wood damages, the Resistograph
F300-S was used to evaluate the quality of timber. The Resistograph F300 S is
an instrument used for detecting and measuring cracks, voids, and decay in
different stages in the invisible inside of a structure. Micro drillings made by a
small drilling needle for measuring the drill resistance reveal the relative density
distribution of wood. In the present paper, construction timber and joints of
differen
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