The model is used to simulate the rig of the Alexander von Humboldt II, which has been in operation since October 2011. The three-masted barque tall ship provides the opportunity for one-day and multi-day sailing trips as well as special training trips. It is the first new German tall ship to be built since the Gorch Fock, with the mast and hull constructed of steel. HB Hunte Engineering GmbH and Marine Engineering Wollert GmbH were responsible for the structure, using RFEM for the calculation of the rigging and the strength analysis.
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Analysis of Sailing Ship Rigging
Number of Nodes | 340 |
Number of Lines | 423 |
Number of Members | 422 |
Number of Surfaces | 5 |
Number of Load Cases | 35 |
Number of Load Combinations | 12 |
Number of Result Combinations | 3 |
Total Weight | 25,793 t |
Dimensions (Metric) | 65.015 x 9.720 x 38.218 m |
Dimensions (Imperial) | 213.3 x 31.89 x 125.39 feet |
Program Version | 4.10.07 |



The aim of this technical article is to perform a design according to the general design method of Eurocode 2, using the example of a slender reinforced concrete column.


Various design parameters of the cross-sections can be adjusted in the serviceability limit state configuration. The applied cross-section condition for the deformation and crack width analysis can be controlled there.
For this, the following settings can be activated:
- Crack state calculated from associated load
- Crack state determined as an envelope from all SLS design situations
- Cracked state of cross-section - independent of load

In the "Deflection and Design Support" tab under "Edit Member", the members can be clearly segmented using optimized input windows. Depending on the supports, the deformation limits for cantilever beams or single-span beams are used automatically.
By defining the design support in the corresponding direction at the member start, member end, and intermediate nodes, the program automatically recognizes the segments and segment lengths to which the allowable deformation is related. It also automatically detects whether it is a beam or a cantilever due to the defined design supports. The manual assignment, as in the previous versions (RFEM 5), is no longer necessary.
The "User-Defined Lengths" option allows you to modify the reference lengths in the table. The corresponding segment length is always used by default. If the reference length deviates from the segment length (for example, in the case of curved members), it can be adjusted.

This feature also contributes to the clearly-arranged display of your results. Clipping planes are intersecting planes that you can place freely throughout the model. The zone in front of or behind the plane is consequently hidden in the display. This way, you can clearly and simply show the results in an intersection or a solid, for example.

The results of solid stresses can be displayed as colored 3D points in the finite elements.
Why is the effective depth different with the effective depth used in shear checks?
Can I optimize parametric cross-sections?
How can I check the determination of the required reinforcement?
Is it possible to consider shear panels and rotational restraints in the global calculation?