The bird-watching tower in the Reuss River delta is an exceptional lookout construction in the Urner Alps. Its striking primary framework consists of 48 log timber columns standing in an inclined position. From four viewing platforms, people seeking relaxation enjoy the wonderful view of the river delta, and ornithologists can watch nesting birds.
The tower, with a height of 11.5 m (37.7 ft), was designed by Swiss architect Gion A. Caminada. The structural analysis was performed by Pirmin Jung Engineers, a Dlubal Software customer.
Timber Engineering
Pirmin Jung Ingenieure für Holzbau AG
Rain, Switzerland
http://www.pirminjung.ch
Model of Tower in RSTAB (© Pirmin Jung Ingenieure)
Timber Lookout Tower
Number of Nodes | 815 |
Number of Lines | 1149 |
Number of Members | 1149 |
Number of Surfaces | 0 |
Number of Solids | 0 |
Number of Load Cases | 4 |
Number of Load Combinations | 3 |
Number of Result Combinations | 0 |
Total Weight | 19.595 tons |
Dimensions | 26.81 x 35.36 x 26.81 feet |
Using the "Beam Panel" thickness type, you can model timber panel elements in 3D space. You just specify the surface geometry and the timber panel elements are generated using an internal member-surface construct, including the simulation of the connection flexibility.
Use the "Rib" component to define any number of longitudinal ribs on a member plate. By specifying a reference object, you can automatically specify welds on it.
You have the option to perform the fire resistance design of surfaces using the reduced cross-section method. The reduction is applied over the surface thickness. It is possible to perform the design checks for all timber materials allowed for the design.
For cross-laminated timber, depending on the type of adhesive, you can select whether it is possible for individual carbonized layer parts to fall off, and whether you can expect increased charring in certain layer areas.
Among others, the following cross-laminated timber manufacturers are available in the layer structure library:
- Binderholz (USA)
- KLH (USA, CAN)
- Kalesnikoff (USA, CAN)
- Nordic Structures (USA, CAN)
- Mercer Mass Timber
- SmartLam
- Sterling Structural
- Superstructures listed in Lignatec Edition 32 "Cross-Laminated Timber of Swiss Production"
By importing a structure from the layer structure library, all relevant parameters are adopted automatically. The library is continually updated.