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Useful Program Features
The Knowledge Base includes technical articles on a wide array of structural analysis and design topics.
These articles are intended to help you navigate through the Dlubal programs, learn efficient tips and tricks, and provide further insight into the program features.
Why Dlubal Software?
Load Combinations in Timber Structures for European and American Timber Standards
In addition to determine loads, there are some particularities concerning the load combinatorics in timber design which have to be considered. Contrary to steel structures where the largest loading results from all unfavorable actions, in timber construction, the strength values are dependent on the load duration and the 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.
Wind Load on Monopitch and Duopitch Roofs in GermanyIn Germany, DIN EN 1991-1-4 with the National Annex DIN EN 1991-1-4/NA regulates the wind loads. The standard applies to civil engineering works up to an altitude of 300 m.
Modeling and Bending Design of Point-Supported Flat SlabThis article describes how a flat slab is generated as 2D model in RFEM and the loading is applied according to Eurocode 1.
Result Combinations 2 | Application Example and Comparison with Load Combinations
My previous article Result Combinations 1 explained the basic principles of result combinations on simple examples. This article describes a further application case, which combines the definition options of Example 1 and Example 2. Likewise, the effort should be compared to a combination by means of load combinations.
Result Combinations 1 | Basis
RFEM and RSTAB provide two different methods for the superposition of load cases. Using load combinations, the loads of individual load cases are superimposed and calculated in a ‘big load case’. On the other hand, result combinations only combine the results of the individual load cases. This article describes the basis of defining result combinations and explains it in detail in two examples.
For Wind as Governing Action Abandon Snow
According to DIN EN 1990/NA:2010‑12 - NDP to A.1.2.1(1) Comment 2, it is possible to neglect the combination of snow as collateral action in the case of the combination wind/snow with the wind as leading action in wind zones III and IV.
Not Treating Snow and Wind Together as Collateral Actions
According to DIN EN 1990/NA:2010‑12 - NDP to A.1.2.1(1) Comment 2, it is necessary to only apply one of the two climatic actions in the combination expressions for actions according to 6.4.3 and 6.5.3 in the case of places located up to +1,000 m above mean sea level if snow and wind are available as collateral actions in addition to non‑climatic leading action.
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