"Crocodile" Building in the Lokstadt Area Development in Winterthur, Switzerland

Structures Analyzed with Dlubal Software

  • Customer Project

Customer Project

Lokstadt, a new urban district, is under construction in the city of Winterthur, Switzerland. The first building to be completed is called "Crocodile". This residential building, which was BIM planned right from the start, is one of the largest timber structures in Switzerland.

Investors

Implenia AG Switzerland
www.implenia.com

Anlagestiftung Adimora
www.pensimo.ch

Gaiwo Genossenschaft für Alters- und Invalidenwohnungen
www.gaiwo-werkgasse.ch

Gesewo Genossenschaft für selbstverwaltetes Wohnen
www.gesewo.ch

General contractor Implenia Schweiz AG
www.implenia.com
Architecture

ARGE Baumberger & Stegmeier AG
www.baumbergerstegmeier.ch

KilgaPopp Architekten AG
www.kilgapopp.ch

Structural engineering (timber) and fire protection Timbatec Holzbauingenieure Schweiz AG
www.timbatec.com
Structural engineering (concrete) Dr. J. Grob & Partner AG
www.gropar.ch

Structural Data

Model

Dlubal customer Timbatec Timber Construction Engineers Switzerland Ltd. was responsible for the structural analysis of the timber structure and decided to use RSTAB.

The name "Lokstadt" was chosen because locomotives and other machines were once built on the site. From 1850 to 2010 Lokstadt was the most important production site for new locomotives and trains in Switzerland. The "Crocodile" (the first electric locomotive installed on the Gotthard railway) has been built here since 1919. The name of the first building to be completed pays homage to this legendary locomotive.

Structure

The "Crocodile" building is a six- to eight-story timber structure. It has a ring-like shape surrounding a courtyard and external dimensions of 348 ft in length, 213 ft in width, and 82 ft in height. The new building with, about 322,917 ft² of net internal area, houses 248 cooperative, rented, and owner-occupied apartments, as well as commercial space on the main floor.

The structure is a mixture of reinforced concrete and timber framing. The basement, part of the main floor, and the stairwells were made of reinforced concrete. The structural system of the rest of the building consists of glued-laminated timber columns and beams as well as large cross-laminated timber panels serving as floor slabs or hollow box elements for the roof. The CLT slabs have a length of up to 62 ft and a weight of up to 5 tons. The outer walls consist of prefabricated timber frame elements including factory-installed windows.

This timber structure is a major contributor in preventing climate change. The timber used in the "Crocodile" building removes 6,414 tons of CO2 from the environment and stores it on a long-term basis.

Source: Konstruktiver Ingenieurbau 04/2022, p. 23-30

Project Location

Zürcherstrasse 41
8400 Winterthur
Switzerland

Keywords

Residential building Timber Glued laminated timber Cross-laminated timber Concrete

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  • Updated 11/10/2022

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