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2022-10-17

Triple Sports Hall in Stuttgart-Waldau, Germany

The triple sports hall with a saw-tooth roof built in the German town of Stuttgart-Waldau impressively shows the sustainable perspectives of modern timber structures. The trusses arranged in the shape of boxes ensure optimal daylight.

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Timber Truss

Dlubal customer merz kley partner, situated in the Austrian town of Dornbirn, was responsible for the structural analysis and used RSTAB for it.

Structure

The new building, which opened in autumn 2020, comprises the hall including a gym with bleachers and several multifunction rooms, as well as an equipment room and changing rooms on one plane. An essential design element of the hall interior consists of ten trusses made of high-strength beech-laminated veneer lumber, which were connected in pairs, forming a spatial structural system. The utilization of this building material enables a low effective depth due to the cross-sections, which are as slender as possible. The inherently sturdy boxes, with a span of about 98 ft, were clad with light-diffusing polycarbonate web panels to maximize daylight. With cladding on the sides and on the top using cross-laminated timber, these trusses weighing 24.251 tons each rest firmly on the columns, providing bracings for the structure without applying steel diagonals.

When prefabricating the trusses, self-drilling dowels were used and the assembly became easier and more precise due to a special setting tool. All other fasteners used in the rather hard timber had to be pre-drilled due to the high material density.

More information and pictures

Source: Deutsches Ingenieurblatt, 6-2022, pp. 12-18

Location

Sporthalle Waldau
Georgiiweg 5
70597 Stuttgart, Germany

Investor	Landeshauptstadt Stuttgart Amt für Sport und Bewegung represented by Hochbauamt D-70173 Stuttgart, Germany www.stuttgart.de/vv/verwaltungseinheit/amt-fuer-sport-und-bewegung.php
Architect	Glück + Partner GmbH www.glueck-partner.com
Structural Design	merz kley partner www.mkp-ing.com

Project Specifications

Interior View of Unfinished Hall (© merz kley partner GmbH)

Trusses Before Assembly (© merz kley partner GmbH)

Installation of Truss Pair (© merz kley partner GmbH)

Model of Timber Truss with Deformations in RSTAB (© merz kley partner GmbH)

Model data

Number of Nodes 20

Number of Lines 32

Number of Members 32

Number of Surfaces 0

Number of Solids 0

Number of Load Cases 4

Number of Load Combinations 2

Number of Result Combinations 0

Total Weight 5.174 tons

Dimensions 99.41 x 8.07 x 0 feet

Do you have any questions?

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KB 001264 | 2018 NDS Timber Column Design in RFEM 6

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KB 001714 | Timber Beam-Column Design per NDS 2018 Using RF-/TIMBER AWC Module

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KB 001714 | Timber Beam-Column Design per NDS 2018 Using RF-/TIMBER AWC Module

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General

What are Actions?

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FAQ

FAQ 004989 | I have defined temperature loads, strain loads, or a precamber. Once…

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KB 001848 | Timber Column Design as per the 2018 NDS Standard in RFEM 6

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.

In this article, the adequacy of a 2x4 dimension lumber subject to combined biaxial bending and axial compression is verified using the RF-/TIMBER AWC add-on module. The beam-column properties and loading are based on example E1.8 of AWC Structural Wood Design Examples 2015/2018.

In RFEM 5 as well as RSTAB 8 in RF-/FOUNDATION Pro, you can save the foundation dimensions for all five foundation types as foundation templates in a user-defined database and use them later in other models.

Separate Load Entry for Structure or Foundation Design

In RF-/FOUNDATION Pro, the foundation design requires the definition of the corresponding loading (load cases, load combinations, or result combinations) for different design situations (STR, GEO, UPL, or EQU).

Screenshots

Interior View of Unfinished Hall (© merz kley partner GmbH)

Trusses Before Assembly (© merz kley partner GmbH)

Installation of Truss Pair (© merz kley partner GmbH)

Model of Timber Truss with Deformations in RSTAB (© merz kley partner GmbH)

KB 001848 | 2018 NDS Timber Column Design in RFEM 6

RFEM 6 - Timber Design Results

Section Properties

Timber Column Model

Example Slab 11.2 LC2

Product Features

You can define built-up timber cross-sections, for example, channel, T, I, and box girders. Single elements are connected by rigid or semi‑rigid connections. Furthermore, hybrid cross-sections are available. In this case, a submenu provides an option to assign different materials to the individual cross‑section parts.

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.

Go to Explanatory Video

Feature 002585 | Fire Resistance Design of Surfaces for EN 1995 and SIA 265

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.

Feature 002615 | Cross-Laminated Timber Manufacturer Library for USA, Canada, and Switzerland

Among others, the following cross-laminated timber manufacturers are available in the layer structure library:

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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.

Frequently Asked Questions (FAQ)

How does the "Orthotropic Plastic" material model work in RFEM?

What is the meaning of the superposition according to the CQC rule in a dynamic analysis??

How can I display the internal forces in the global coordinate system and not in the principal coordinate system of the cross-section?

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How do I display some results of all load cases in the printout report, but other results of selected load cases only?

I would like to carry out the flexural buckling design for timber components with imperfections and internal forces according to the second-order analysis. Is it sufficient to activate this in Details of the RF‑/TIMBER Pro add-on module or is it necessary to make additional settings?

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