Nursing home Wier: Start of construction of shell
10.02.2022
The new Wier retirement and nursing home in Ebnat Kappel will one day be home to 95 people. It is being built with wood from the region. Foresters from the communities felled over 3,500 cubic meters of wood last winter, which was later processed into wooden components. Follow the construction via webcam.
In January 2017, the public exhibition of the architectural competition for the new construction of the Wier nursing home with the Weite Nähe" ("Wide Proximity") project by Dobis Architekten GmbH and Zach + Zünd Architekten GmbH BSA SIA took place. In the same year, the population approved approved a credit of CHF 38 million for the new building.
From the beginning it was clear that wood from the surrounding communities should be used in the nursing home. This required early planning. A review shows the necessary steps so that EGLI Zimmerei AG can soon start erecting the wooden building. Now the core zone is concreted, the rooms will then be erected around the concrete core in timber construction. The work can be followed live with the webcam.
Wood procurement planned early
The planning of wood procurement from the from the forestry industry to the processing companies and the timber be well coordinated from the beginning. For this purpose, Timbatec has already planned at the beginning of 2019 the Timbatec determined the quantities of wood for the supporting structure, the building envelope and defined the required strength. It was also determined whether the wood would will ultimately be visible or not. With this information, the foresters can harvest the right wood from the forests.
Own wood in public buildings
Since January 1, 2021, the new
public procurement law (BöB) has been in force since January 1, 2021.
regarding more sustainability and quality competition. However, the BöB also has
pitfalls. For example, in the procurement of regional wood. Public
construction projects that exceed the threshold value of 9.575 million Swiss francs must be
be put out to public tender. The same applies to the services of the
(e.g. carpentry work) or individual supplies (e.g. cutting of logs).
cutting of logs), if they exceed the threshold value of 500,000 Swiss francs or
250,000 francs respectively. New construction projects such as the nursing home Ebnat Kappel
must therefore be put out to public tender. According to the principle of
principle of non-discrimination, no requirements may be imposed with regard to the
be made with regard to the origin of the material. It would not be permissible to demand Swiss wood or wood from a certain
would not be permissible.
However, there are ways in which wood from the
public tender, wood from the surrounding area can be used: The
The provision of wood by the builder himself, so-called in-house procurement, is one of them.
in-house procurement, is one of them. Communities such as Ebnat Kappel and the
surrounding communities in Toggenburg, which have large forests of their own,
may provide the raw material and define this in the tender.
defined in the tender. It is also particularly interesting that the degree of processing of the products is
products is optional. This means that whole logs, sawn timber or glued products can be provided.
or glued products can be provided. At the retirement and nursing home
the
the wood in-house and made it available to the woodworker.
made available to the woodworker. The cut wood is used directly in construction.
Two options for in-house procurement
Direct use of wood from our own forests
Direct use ensures that the wood harvested in the company's own forests is actually used for a particular used for a specific construction project. Every tree that is felled is planned for a specific use and its traceability is guaranteed at all times.
Indirect Use of wood from our own forests
In indirect use, the same amount of wood is is harvested as is used for a specific construction project. This principle allows a forest owner to use his own resources. The wood is not used directly for the particular construction, but the same quantities of wood are traded on the Swiss market.
The mockup
A so-called mockupis located on the site of the new
so-called mockup as a demonstration model. It is used to check the planning, the
the construction process and the quality of workmanship, as well as for sampling the various
different trades. The prefabricated wooden elements are
elements are erected by the carpenter in the factory as individual, transportable elements and
erected on the construction site in a very short time. This is followed on the construction site by
roofing work, tinsmith work, window installation, blind installation and
metal construction work (railings). The façade is also installed on site.
assembled on site. Due to the prefabrication of the outer wall and roof elements and the high repeat
and the high repetition factor of these components, unforeseen adjustments on site are
on the construction site are time-consuming and cost-intensive. By creating the mockup
additional costs are avoided, and a high degree of technical and financial security is achieved.
security. In the mockup, components were created that have a high repetition factor in the new building.
have a high repetition factor in the new building: Residents' rooms, balcony section and
facade section. In this way, points for improvement can be corrected before the definitive
can be corrected before the final prefabrication. The mockup remains in place during the entire
construction period and serves as a reference model for quality control. The mockup
is also currently being used to check the color concept. The public will be offered two
public will be offered two public viewing dates. On these dates
representatives of the building commission and the planning consortium Wier will be on site and
and will be able to answer questions from interested parties.
