The Study of Timber Structures Based on In Situ Investigation

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The lack of knowledge of the structural behaviour and performances of timber structures often led to their loss and substitution with modern structures, or to invasive strengthening works. Ignorance is a cause of the loss of these structures also because the absence of recognition of their value does not give rise the need for their conservation. Just because ignorance is one of the main causes of loss of this heritage, knowledge is the first goal to be reached aiming to its preservation. The most important source of knowledge of an existing structure is its direct survey. The in situ investigations should aim to collect data about many aspects of the structure: general geometry and details of single members, internal joints, and metal reinforcements; wooden species and defects; evidences of decay; deformations or displacements; but also relation with other structural elements or systems, signs of timber processing, indications of the reuse of materials, etc. All the gathered data should allow an interpretation of the gradual change in time of the structure’s physical reality, of its technological conception and of its structural behaviour since the original design by the carpenter or engineer, trough the subsequent works or “natural” evolutions, unto the current state.

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97-104

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September 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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