Structural Analysis and Design Software for Timber Structures

  • Timber Structure - Crossrail Station in Canary Wharf, London

Design of Timber Roofs


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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.

  1. 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 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:
      • Deutschland DIN EN 1995-1-1/NA:2013-08 (Germany)
      • NBN EN 1995-1-1/ANB:2012-07 (Belgium)
      • Bulgaria 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)
      • Ireland 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)
      • Cyprus 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, and Dutch.
  2. 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 extensible material library. Loads due to cantilevers and collars/ties can be entered separately. The integrated generators allow for convenient 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).

  3. Design

    In RX-TIMBER Roof, the following calculation settings are possible:
    • Selection of the designs to be performed (ULS, SLS, fire resistance)
    • Specification whether the support forces and deformations are to be displayed or not
    • 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
  4. 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, the 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.


Contact Dlubal

Do you have any questions about our products or which are best suited for your design projects? Contact us via phone, email, chat or forum or search the FAQ page, available 24/7.

+420 227 203 320

[email protected]

Customer Projects

Customer Projects Designed with Dlubal Products

Fascinating customer projects designed with the Dlubal structural analysis software.


400.00 EUR

The prices apply to the use of the software in all countries.

Online Training | English

Eurocode 5 | Timber Structures According to DIN EN 1995-1-1

Online Training 16 March 2023 9:00 AM - 1:00 PM CET

Event Invitation

International Mass Timber Conference

Conference 27 March 2023 - 29 March 2023


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