Analyze sophisticated structural timber projects with Dlubal Software. Design with national standards implemented in the various add-on modules for members and surfaces or panels as well as all joints and connections.
Trailer: Structural Timber with Dlubal Software
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![Forces per Wall](/en/webimage/011716/2599295/01-de-2-png.png?mw=512&hash=66b374f61e9fa70b59b5f53f94b111bd64176a8b)
This article describes the design of timber panel walls due to generated horizontal loads.
![Single-Span Beam with Lateral and Torsional Restraint and Without Intermediate Support](/en/webimage/011728/2689287/KB_001647_01.jpg?mw=512&hash=23357a6237b959334005747cf961fa76f0941d6c)
The article titled Lateral-Torsional Buckling in Timber Construction | Theory explains the theoretical background for the analytical determination of the critical bending moment Mcrit or the critical bending stress σcrit for the lateral buckling of a bending beam. This article uses examples to verify the analytical solution with the result from the eigenvalue analysis.
![Building](/en/webimage/008705/2094551/01-en.png?mw=512&hash=65e98cfe859ce35a3e3e9da47a0ef9335401520e)
This article shows the effect of the different stiffnesses of the timber panel walls on the floor plan.
![Lateral Buckling of Single-Span Beam](/en/webimage/008676/2225521/01-de.png?mw=512&hash=9f2525444a7414dfb1c05a73e375e9c4fe4f47b1)
Slender bending beams that have a large h/w ratio and are loaded parallel to the minor axis tend to have stability issues. This is due to the deflection of the compression chord.
![Torsional stress at the intersection points of a cross -laminated timber plate in RFEM](/en/webimage/006828/497052/RF-LAMINATE.png?mw=512&hash=f7633cd46a79186ac55ba5a5f450c2a96ad24a85)
In the RF-LAMINATE add-on module for RFEM, the design of torsional shear stresses in the superposition of net and gross cross-section values is possible. The design is performed separately in the x- and y-directions. The loads on the intersection points of cross-laminated timber panels are checked.
![2.1 Max Stress Ratio by Loading](/en/webimage/006965/1588496/000385-en-png-png.png?mw=512&hash=e925cd4d07905f8ab3a3257e05bd4172998ffd05)
- General stress analysis
- Graphical and numerical results of stresses and stress ratios fully integrated in RFEM
- Flexible design with different layer compositions
- High efficiency due to few entries required
- Flexibility due to detailed setting options for basis and extent of calculations
- A local overall stiffness matrix of the surface in RFEM is generated on the basis of the selected material model and the layers contained. The following material models are available:
- Orthotropic
- Isotropic
- User-defined
- Hybrid (for combinations of material models)
- Option to save frequently used layer structures in a database
- Determination of basic, shear, and equivalent stresses
- In addition to the basic stresses, the required stresses according to DIN EN 1995-1-1 and the interaction of those stresses are available as results.
- Stress analysis for structural surfaces including simple or complex shapes
- Equivalent stresses calculated according to different approaches:
- Shape modification hypothesis (von Mises)
- Shear stress hypothesis (Tresca)
- Normal stress hypothesis (Rankine)
- Principal strain hypothesis (Bach)
- Calculation of transversal shear stresses according to Mindlin or Kirchhoff, or user-defined specifications
- Serviceability limit state design by checking surface displacements
- User-defined specifications of limit deflections
- Possibility to consider layer coupling
- Detailed results of individual stress components and ratios in tables and graphics
- Results of stresses for each layer in the model
- Parts list of designed surfaces
- Possible coupling of layers entirely without shear
![RF-/JOINTS Timber - Timber to Timber Add-on Module for RFEM/RSTAB | Design of Direct Timber Connections According to Eurocode 5](/en/webimage/002890/2982582/Truss_(1).png?mw=512&hash=8c5302ae04d7a2024cab77b7f047eafc1f238334)
- Design of hinged connections
- Biaxial inclination of the connected member (for example, a jack rafter joint)
- Connection of any number of members on one node for the type "Main member only"
- Screw diameter 6 mm – 12 mm
- Automatic check of the minimum distance between screws
- Optional free definition of screw distances
- Transfer of eccentricity from RFEM/RSTAB
- Crosswise or parallel screw alignment
- Definition of up to 16 screws in a row
- Graphical visualization of joints in the add-on module and in RFEM/RSTAB
- Performing all required designs
![RX-TIMBER Roof Stand-Alone Program | Design of Timber Roofs](/en/webimage/002949/3082468/11.jpg?mw=512&hash=3cf59b02a2883df92f903cd05cfcef162d84e31c)
- Design of the following roof types:
- Flat Roof
- Monopitch roof
- Duopitch roof (symmetrical/asymmetrical)
- Definition of any additional support and free selection of degrees of freedom (additional free definition of translational and rotational spring stiffness of supports and hinges)
- Arrangement of up to five collar/tie beams, including intermediate support for duopitch roof
- Automatic generation of wind and snow loads
- Automatic generation of required combinations for the ultimate and serviceability limit states, as well as fire resistance design (additional definition of several member and nodal loads)
- For design according to EC 5 (EN 1995), the following National Annexes are available:
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Germany DIN EN 1995-1-1/NA:2013-08 (Germany)
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NBN EN 1995-1-1/ANB:2012-07 (Belgium)
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BDS EN 1995-1-1/NA:2012-02 (Bulgaria)
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DK EN 1995-1-1/NA:2011-12 (Denmark)
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SFS EN 1995-1-1/NA:2007-11 (Finland)
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NF EN 1995-1-1/NA:2010-05 (France)
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I S. EN 1995-1-1/NA:2010-03 (Ireland)
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UNI EN 1995-1-1/NA:2010-09 (Italy)
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NEN EN 1995-1-1/NB:2007-11 (Netherlands)
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ÖNORM B 1995-1-1:2015-06 (Austria)
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PN EN 1995-1-1/NA:2010-09 (Poland)
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SS EN 1995-1-1 (Sweden)
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STN EN 1995-1-1/NA:2008-12 (Slovakia)
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SIST EN 1995-1-1/A101:2006-03 (Slovenia)
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CSN EN 1995-1-1:2007-09 (Czech Republic)
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BS EN 1995-1-1/NA:2009-10 (the United Kingdom)
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CYS EN 1995-1-1/NA:2011-02 (Cyprus)
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- Simple geometry input with illustrative graphics
- Input of tapered cantilevers with cut-to-grain on the bottom side of rafters
- Extensive material library that can be extended by user-defined materials
- Determination of design ratios, support forces, and deformations
- Color reference scales in result tables
- Direct data export to MS Excel
- Program languages: English, German, Czech, Italian, Spanish, French, Portuguese, Polish, Chinese, Dutch, and Russian
- Verifiable printout report, including all required designs. Printout report available in many output languages; for example, English, German, French, Italian, Spanish, Russian, Czech, Polish, Portuguese, Chinese, and Dutch.
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