Approximation of the moisture content during service and erection time

For quality planning of timber buildings, the estimation of the expected wood moisture content
especially during the construction process and in its use is still a challenge. The Eurocode 5,
EN 1995-1-1:2010 is providing three Service Classes (SC) and would just account SC1
according to the use of the structural members as indoor use. However, the effects of, for
example, moisture accumulation during the construction phase or the stresses that can be
caused by the commissioning of the building are not shown. Assignment of the correct SC to
a structure is one of the first important decisions a structural engineer needs to make when
starting the design of a timber structure. In the following, further approaches and models are
presented on how to calculate this impact in more detail.