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RX-TIMBER Roof
Design of Timber Roofs
Further Information
The RX‑TIMBER Roof stand‑alone program performs the ultimate and serviceability limit state design as well as fire resistance design of monopitch and duopitch roofs according to EN 1995‑1‑1.
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Features
- 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 state 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:
DIN EN 1995-1-1/NA:2013-08 (Germany)
NBN EN 1995-1-1/ANB:2012-07 (Belgium)
BDS EN 1995-1-1/NA:2012-02 (Bulgaria)
DK EN 1995-1-1/NA:2011-12 (Denmark)
SFS EN 1995-1-1/NA:2007-11 (Finland)
NF EN 1995-1-1/NA:2010-05 (France)
I.S. EN 1995-1-1/NA:2010-03 (Ireland)
UNI EN 1995-1-1/NA:2010-09 (Italy)
NEN EN 1995-1-1/NB:2007-11 (Netherlands)
ÖNORM B 1995-1-1:2015-06 (Austria)
PN EN 1995-1-1/NA:2010-09 (Poland)
SS EN 1995-1-1 (Sweden)
STN EN 1995-1-1/NA:2008-12 (Slovakia)
SIST EN 1995-1-1/A101:2006-03 (Slovenia)
CSN EN 1995-1-1:2007-09 (Czech Republic)
BS EN 1995-1-1/NA:2009-10 (United Kingdom)
CYS EN 1995-1-1/NA:2011-02 (Cyprus)
- 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 or Dutch.
- Design of the following roof types:
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Input
There are various options available for modeling a roof. Graphical representations facilitate the geometry input. Modifications are updated automatically.
In addition, it is possible to consider cross‑section weakening on supports. Optionally, you can define if the design of support pressure on the rafter side should be performed.
Permanent loads (for example roof structure) can be entered using the comprehensive and extendable material library. Loads due to cantilevers and collars/ties can be entered separately. The integrated generators allow for comfortable generation of various wind and snow load cases. You can manually add any concentrated and distributed loads.
For checking purposes, the load cases are displayed graphically and included in automatically generated combinations according to EC 5. Thus, the input is reduced to a minimum. For stability analysis and serviceability limit state design, you can change the data manually, for example to ignore the SLS of cantilevers (roof overhang).
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Design
In RX-TIMBER Roof, the following calculation settings are possible:- Selection of the designs to be performed (ULS, SLS, fire resistance)
- Determination of displaying support forces and deformations
- Adjusting the recommended limit values for the serviceability limit state
- Specification of parameters for the fire resistance design to be performed in compliance with the simplified method
- Increasing strengths according to EN 1995‑1‑1, Clause 3.2
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Results
After the calculation, the results of performed designs including all required intermediate values are displayed in clearly arranged result tables sorted by various criteria. Since the program displays the intermediate values in detail, transparency of all designs is ensured. It is possible to display the distribution of internal forces for each x-location of the beam in a separate graphical window. Here, both the deformations and the individual internal forces can be displayed.
Designs with design details and selected result diagrams can be added in the printout report providing clearly arranged documentation. The printout report can include graphics, descriptions, drawings, and more. Moreover, it is possible to select which calculation data will be covered in the printout.
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| Manual RX-TIMBER |
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Book About FEA and RFEM
In this book for engineers and students, you will learn the basics of the finite element method in a practical way by means of manageable examples that have been calculated with RFEM.
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In Germany, DIN EN 1991-1-4 with the National Annex DIN EN 1991-1-4/NA regulates the wind loads.
The cross-section resistance design analyzes tension and compression along the grain, bending, bending and tension/compression as well as the strength in shear due to shear force.
The design of structural components at risk of buckling or lateral-torsional buckling is performed according to the Equivalent Member Method and considers the systematic axial compression, bending with and without compressive force as well as bending and tension. Deflection of inner spans and cantilevers is compared to the maximal allowable deflection.
Separate design cases allow for a flexible and stability analysis of members, sets of members, and loads.
Design-relevant parameters such as the stability analysis type, member slendernesses, and limit deflections can be freely adjusted.
- Is it possible to design the support pressure or the compression perpendicular to the grain in RX‑TIMBER?
- I have a question about the results of the serviceability limit state design: How is the increment of the dead load by the factor 1.8 and the imposed load by 1.48 explained in the result combinations for the SLS design?
- Which Dlubal Software programs can I use to calculate and design timber structures?
- Windows Defender does not allow me to install RX‑TIMBER. Is it possible to get around this?
- How do I create a user-defined material in the RX‑TIMBER program?
- How can I load the authorization file (AUTHOR.INI) in the RX‑TIMBER module?
- Can I also apply user-defined loads in RX-TIMBER?
- Is it possible to display a DXF file of the beam geometry by using the program RX‑TIMBER Glued-Laminated Beam?
- Why is the transversal compression factor kc,90 of 1.0 assumed in the design of support pressure?
- How can I change the language in the RX‑TIMBER add-on module?
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