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

Keywords