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  1. Load Combinations in Timber Structures for European and American Timber Standards

    In addition to determine loads, there are some particularities concerning the load combinatorics in timber design which have to be considered. Contrary to steel structures where the largest loading results from all unfavorable actions, in timber construction, the strength values are dependent on the load duration and the timber humidity. Special characteristics have to be considered as well for the serviceability limit state design. The following article discusses the effects on the design of wooden elements and how this is possible with RSTAB and RFEM.

  2. Figure 01 - Structural System and Cross-Section Dimension According to [1]

    Modeling of Semi-Rigid Composite Beam Made of Timber as Surface Model

    There are several options to calculate a semi-rigid composite beam. They differ primarily in the type of modeling. Whereas the Gamma method ensures a simple modeling, additional efforts are required when using other methods (e.g. shear analogy) for the modeling which are, however, offset by the much more flexible application compared to the Gamma method.
  3. Structural Analysis of Kerto-Q

    Structural Analysis of Kerto-Q

    The library of RF‑LAMINATE now includes the product Kerto‑Q by the Metsä Wood company. All LVL panels are available, including the characteristic strength parameters.

  4. Vibration Design of Cross-Laminated Timber Plates

    For wide-span ceilings, the vibration design of cross‑laminated timber plates is often governing. The advantage of the lighter material of timber over concrete turns into a disadvantage because a high mass material is advantageous for a low natural frequency.

  5. Modeling of Cross-Laminated Timber Plate Curved by Screw-Press Bonding 3

    Modeling of Cross-Laminated Timber Plate Curved by Screw-Press Bonding 3

    The last part of my post deals with consideration of forces resulting from imposed deformation of cross‑laminated timber plate when designing a structure with imposed loads.

  6. Modeling of Cross-Laminated Timber Plate Curved by Screw-Press Bonding 2

    Modeling of Cross-Laminated Timber Plate Curved by Screw-Press Bonding 2

    This part explains the determination of forces arising when screwing a straight cross‑laminated timber plate to a curved glulam beam. For this, a glulam beam with a curved member was modelled in RFEM. The member has a precamber of 12 cm since the preliminary design showed that the precamber of 6 cm applied will never be sufficient to keep l/300. Dimensions of the bottom chord are 12/32 cm. The plate was selected in RF‑LAMINATE as a three‑layer plate with the thickness of 8 cm.

  7. Modeling of Cross-Laminated Timber Plate Curved by Screw-Press Bonding 1

    Modeling of Cross-Laminated Timber Plate Curved by Screw-Press Bonding 1

    Our client had an exciting task of modeling a cross‑laminated timber plate with such a precamber that in the case of a span more than ten meters, the deformation is below the limit value of l/300 = 3.3 cm. The idea was to screw the plate on a glulam beam and then put it together with a glue approved by building authorities in order to create a rigid bond between the plate and the member.

  8. Design of Curved Chair in RF-LAMINATE

    Design of Curved Chair

    In RF‑LAMINATE, it is possible to design also curved quadrangular surfaces. In the example in the figure, the cross‑laminated timber layers of a chair are designed.

  9. Design of Carbon Frame in RF-LAMINATE

    Design of Carbon Frame

    RF-LAMINATE is an excellent tool for the design of carbon fibers. You can define the anisotropic material behavior of carbon fibers directly in a multi‑layer structure in the module.

  10. User-Defined Colors and Textures for Layer Compositions in RF-LAMINATE

    User-Defined Colors and Textures for Layer Compositions

    To better distinguish the different layer compositions, e.g. for walls and ceilings, you can assign user‑defined colours and textures to each composition.

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