Historische hölzerne Dachtragwerke im Raum Graz – Methodik zur Zustandsbeurteilung

Abstract

Historic roof structures made of timber in Graz -methodology for site evaluationThis contribution deals with the influences of time and those relevant to bearing capacity on the reliability of historic timber roof structures. Furthermore the evaluation as well as damage analysis of historic roof structures are discussed. Based on this an easily comprehensible and documentable methodology temporarily only for roof structures in the area of Graz is presented and illustrated with examples.

Tension Loaded Connections With Wood Dowels

“…As the data in Table 1 show, the minimal and maximal failure load measured occur for test n = 1 and n = 2. Neglecting these two results, the mean value of the remaining three tests produces Foutlier mean = 0.390 kN, see (1). 466 347 357 3 390…”

“…There, they serve to secure the position of carpenter's joints and transfer connection forces. In this application, the dowel connection is subjected to shear and tension forces [1] [2]. After having been replaced by steel fasteners in recent decades, wood dowels are now back in focus, even outside the rehabilitation of cultural heritage [3] [4].…”

“…The combination especially of tension and shear load has not been studied previously. 1 Matthias Brieden, Timber Structures and Building Rehabilitation, University of Kassel, Germany; mbrieden@uni-kassel.de 2 Max Braun, Timber Structures and Building Rehabilitation, University of Kassel, Germany 3 Werner Seim, Timber Structures and Building Rehabilitation, University of Kassel, Germany…”