Timber Slab | CLT Timber

In this article, the calculation of a timber panel wall with the beam panel thickness type is compared with a manual calculation.

Using the Timber Design add-on, timber column design is possible according to the 2018 NDS standard ASD method. Accurately calculating timber member compressive capacity and adjustment factors is important for safety considerations and design. The following article will verify the maximum critical buckling strength calculated by the Timber Design add-on using step-by-step analytical equations as per the NDS 2018 standard including the compressive adjustment factors, adjusted compressive design value, and final design ratio.

When calculating regular structures, data input is often not complicated but time-consuming. Input automation can save valuable time. The task described in the present article is to consider the stories of a house as single construction stages. Data is entered using a C# program so that the user does not have to enter the elements of the individual floors manually.

In RFEM and RSTAB, you can design members with the "Laminated Veneer Lumber" material type. The following manufacturers are available:

• Pollmeier (Baubuche)
• Metsä (Kerto LVL)
• STEICO
• Stora Enso

In the ultimate configuration, you can consider strength coefficients for increasing the strengths. The coefficients reducing the strengths are automatically taken into account regardless of this. Try it now!

Go to Explanatory Video

In RFEM, the oriented strand board (OSB) material is available for the USA and Canada. The material parameters are taken from the "Panel Design Specification manual".

Using the "Beam Panel" thickness type, you can model timber panel elements in 3D space. Simply specify the surface geometry and the timber panel elements are automatically generated using an internal member-surface construct, including the element connection stiffness. The Beam Panel thickness type is defined using the Multilayer Surfaces add-on.

A "beam panel" provides you with the following advantages:

• Single-sided or double-sided sheathing
• Automatic calculation of a semi-rigid coupling between studs and sheathing
  • Nailed sheathing connection
  • Stapled sheathing connection
  • User-defined sheathing connection
• Representation as a complete geometric 3D object (frame, studs, surface, etc.), including eccentricity and automatically calculated stiffness between elements
• Consider openings via surface cells
• Design of the individual structural elements utilizing the Timber Design add-on (full shear wall design planned for a future release)
• Other material options available (e.g., particle board, gypsum, or fiberboard sheathing with cold-formed steel sections)

• Go to Explanatory Video