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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.
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The wind, which blows parallel to the surfaces of a structure, can generate friction forces on these surfaces. This effect is mainly important for very large structures.
The wind loads are regulated according to Eurocode 1 - Actions on structures - part 1-4: General actions - Wind loads. The nationally determined parameters of a respective country can be found in the National Annexes.
With the function "Generate Model - Members" → "3D Cell", it is very easy to generate containers (shipping containers, office containers, mobile homes, etc.) with regular and irregular distribution of the cells.
If the wind load for buildings or structures is to be determined by the simultaneous assumption of aerodynamic pressure and suction coefficients on the windward and leeward sides of the building, the correlation of the wind pressure on zones D and E of the wall surfaces may be taken into account.
This article presents a simple example of a lattice structure to explain how to determine wind loading as a function of the lattice solidity.
In the case of plate structures, it is always necessary to consider the realistic definition support conditions. Depending on the way of defining the flexibility of the supports, clear differences may occur in the results.
This article describes the determination of force coefficients by using a wind load and the calculation of a stability factor due to overturning.
A previous article presented different variants of surface elastic foundations in addition to the traditional subgrade reaction modulus method. The following article describes another method for surface foundation. This method considers the adjacent ground areas by means of a foundation overlap. In this case, foundation parameters refer to the continuing works by Pasternak and Barwaschow.
The ‘Generate Snow Loads’ function provides the option to consider snow overhang. Thus, the load of the snow overhang is applied automatically to the eaves using distributed load or several nodal loads.
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.
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