Answer:
The reference height can be defined in the factors for the standard SIA 260. These can be found in General Data (see Image 01). The desired reference height is available in the "Combination Coefficients" tab.
Question
Where can I define the reference height for the reduction factors of a snow load according to SIA 260?
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In addition to determining loads, some particularities concerning the load combinatorics in timber design have to be considered. Contrary to steel structures, where the largest loading results from all unfavorable actions, in timber construction, the strength values depend on the load duration and timber humidity. Special characteristics have to be considered as well for the serviceability limit state design. The following article discusses the effects on the design of wooden elements and how this is possible with RSTAB and RFEM.
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