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Everything you need to know about structural analysis

Due to their enormous structural load-bearing capacity, CLT panels now also enable new architectural and design dimensions to be created in timber construction. As the board layers are bonded at right angles to each other, the load is transferred along two axes. In the past, this was the preserve of reinforced steel structures. The advantage of this is a more flexible room design at the planning stage; designs can now also be simplified, and thinner bare ceiling thicknesses are possible. Even diagonal or point-supported structures can be realised in outstanding quality with CLT. CLT panels also have a particularly high load-bearing capacity, as the load-bearing width generally extends across the entire panel width due to the transverse layers. The high inherent stiffness of CLT also has a positive impact on bracing a building.


Structural analysis of CLT elements

Due to the composition of longitudinal and transverse board layers, CLT elements with homogeneous solid timber cross sections and glulam cross sections are designed differently.
The downloadable preliminary design tables and structural analysis program are intended to facilitate the preliminary design. The calculation examples are also provided to make the structural calculations easier to follow.

» Calculatis by Stora Enso


Preliminary design tables

The following PDF files have been compiled by Stora Enso in good faith but are not a substitute for a structural analysis for the particular application and circumstances. All the information contained in the tables complies with current technical standards and practices, however errors and omissions cannot be ruled out. Stora Enso shall therefore accept no liability and explicitly states that users of these preliminary design tables are responsible for checking the individual results. Verifications of common CLT components may be more object-specific and variable even with the structural analysis program provided by Stora Enso.



» Wall - Internal walls

» Wall - External walls

Floor - Single-Span Beam

» Floor - Single-Span Beam - Vibration

» Floor - Single-Span Beam - Deformation

Floor - Two-Span Beam

» Floor - Two-Span Beam - Vibration

» Floor - Two-Span Beam - Deformation