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Building elements produced by the “MiTek” technology

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Truss gang-nail plateAlready many years ago, most of countries of the Central Europe have acknowledged modern technologies of construction and are harmonizing their building norms with latest standards periodically. It provided the possibility to ensure a high energy-efficiency and constant high value of all newly erected buildings and majority of renovated buildings.

The “MiTek” technology offers a perfect solution in construction of structurally durable and available buildings with low power-intensity in field of construction of dwellings and commercial edifices. The excellent relation of price and value is mainly provided by three aspects:

  • The technology is based on smart structural engineering solutions, improvement of material expense, and the needed structural durability.
  • The system lays on principles of industrial manufacturing processes and provides high quality of products with low cost in the shortest possible time.
  • End product – building elements – allow builders to install the building on site very fast and precisely by providing a ready-to-use product of high value instead of starting to construct a building from an empty space by subjecting it to all possible weather conditions and solving problems related to construction schedule and preciseness of work execution.

Steel connector in wooden trussThe structural durability is provided by application of connection plates plates made of a special metal. These plates connect joints of wooden structure fixedly. It is the timber that ensures the small weight and low cost. Being 15 times lighter than steel and seven times lighter than concrete, the timber provides the needed structural durability. The guarantee of success lays in combination of smart construction engineering solutions, special connection plates for roof structure, and the best properties of timber as a construction material. (Picture: Steel connector in wooden truss)

By applying the “MiTek” technology, the span of roof trusses may reach even 40 meters or it can be short enough for supporting a roof of garden shed. Application of the technology is not limited by dimensions or forms the building roof.

Wooden building elements are usually used in many industrial countries. For example, in North America, Scandinavia, and Australia, market share of wooden building elements in the market of dwellings’ construction is about 90%. Wooden structures provide many families with an accessible dwelling house of low power-intensity and long-term durability. In many countries of the European Union, e.g., United Kingdom and Germany, edifices with durable roof structures of wooden building elements are preferred.

The new “Eurocode 5” is particularly drafted considering specifics of roof structures; and it defines the needed quality criteria of steel connectors (for example, of steel connectors produced by the “MiTek” technology) in other standards like EN 14545. Application of the timber and criteria of its quality are defined by the standard EN 338 and other European normative documents; consequently, timber along with steel and concrete is a construction material with defined requirements.

Wooden buildings

Manufacturing of wooden building elements is regulated by the standard EN 14250. Documents of the Eurocode define the manufacturing process and materials applied in wooden building elements. No other construction technology in the European Union has such a complete, valid, and obligatory documentation. There has to be mentioned also the CE conformity certificate that is mandatory to steel connectors and the European Technical Approval (ETA) that determines the structural durability and conformity with the standard of each specific connected roof. In total, it turns the technology of wooden construction into the one of safest and most reliable in the whole field. (Picture: Church project in Lithuania).Church project in Lithuania

Major objections against timber building elements are related to the fire-safety of wooden structures. However, as it was testified by the rapid collapse of the World Trade Centre, fire is a problem not only for wooden buildings. Steel structures collapsed after 50 minutes long intense impact of fire.

Heat energy created by fire makes the steel to melt and the wood to char. Under temperature of 400-500oC, the steel loses up to 50% of the crystal frame resistance while the wood just starts to burn and char under such temperature. Depending on the beam thickness, the char forming around the core insulates the inside of timber thus preserving temperature lower than the ignition point. Due to this reason, in case of fire, steel and concrete buildings collapse very fast and completely; meanwhile, wooden buildings burn slowly and often do not collapse.

Advantage of timber is its durability even up to the critical ignition temperature. The adverse property of steel and concrete is the considerable loss of resistance under increased temperature. However, fire destroys any buildings irrespective of materials used in construction.

In the North America and some European countries, for example, Germany, fire-resistance of wood building elements in combination with surface protection materials like light gypsum board plates up to 120 minutes (two hours) is being certified.

Application of wooden elements in public buildings, e.g., shopping centres, sporting halls, and schools, is very common and protected by national building norms.

Connector joint after a fireTests performed in the Baltic region by Edgars Buksans /Edgars Bukšāns/, researcher of the “Forest and Timber Products Investigation and Development Institute” (MeKa), and thesis of his Master Paper approve the underestimated and socially wrongly interpreted fire-resistance of timber. (Picture: Connector joint after a fire)

The most attractive properties of wooden building materials among others are their durability and the benefit expressing as low power-intensity and low heat-conductivity provided by natural properties of timber building materials. Use of timber is directly related to forest industry, woodworking industry, the field of designed timber products (for example, OSB production units), and, finally, with forest as a part of nature and landscape. The growing forest provides the often-renewing local resources. Amount of energy necessary for turning a tree into boards is approximately for 1000 times less than the one needed for manufacturing of respective amount of steel or concrete. Timber is a local resource providing the economic value of a country. Other construction materials and raw materials have to be either extracted or imported; thus, the economic value is being exported from the country to other regions.

Strong field of forest industry and woodworking provides a stable and long-lasting growth of economics by preserving the major part of obtained value for the country. By applying timber and prefabricated wooden parts, construction provides market for local industry, creates workplaces, and ensures a long-term development of economics and durable buildings with high value to inhabitants of the country. (Picture to the left: Roof building structure applying technology of wooden trusses. Picture to the right: Application of wooden trusses in construction of mansard roof)

Roof building structure applying technology of wooden trussesApplication of wooden trusses in construction of mansard roof

Simplicity of use and the high quality of the edifice is the main aspect of application of the “MiTek” technology. By using special analytic software, the architectural solution of the building is being analysed already in the stage of CAD drawings where all calculations of details are performed. The “MiTek” software allows the architect to complete the entire project in few hours by providing complete set of production drawings, material calculations, and fully documented structural calculations.

The next stage is manufacturing of wooden building elements in accordance with specification of the wooden structure. At this stage, quality of “MiTek” connectors certified following the Eurocode and providing strength of every connection is crucial. The final stage is installation of building elements of the structure on site that allows to put them together just like “LEGO” blocks. On site, only fully prefabricated materials are installed. The advised wooden building structure of building elements permits insertion of all electrical and sanitary installations. They save the work to be performed and materials to be applied and allow constructing a completed building in few days.

Simplicity and shortness of the process save up to 25% of construction cost of an average family house. Additional economy is provided by application of the “MiTek” technology, optimisation of amount of timber to be used, and ensuring of low expenses along maintenance of high quality of the production process.

The “MiTek” technology is applied also in manufacturing of perfectly insulated walls of modern passive buildings, floor cassettes, and roof elements or roof trusses for complex reinforced concrete building boxes and empty box systems. The technology provides a wide multiplicity of application in different areas of the construction fields. (Picture to the left: Process of wooden truss manufacturing. Picture to the right: Wooden trusses as forms of concrete structures)

Wooden trusses as forms of concrete structuresProcess of wooden truss manufacturing

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Who we are?

WoodCon, Ltd. is one of the few manufacturers of Prefabricated timber trusses in Latvia, whose products comply with the European standart EN 14250:2010. Read more...

What we do?

  • Drawing proffesinal truss designs;
  • Manufacturing high quality timber trusses;
  • Safely delivering output material to construction site. Read more...

 

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