Modular technology - building construction technology based on prefabricated modules, i.e. spatial, three-dimensional (volumetric) segments. They can have a varied load-bearing structure, i.e. timber frame, solid wood, steel, concrete, hybrid. Modules are characterised by a high degree of prefabrication. They are manufactured as factory-finished structural elements that are delivered to site and assembled as large volume elements or as essential building components such as whole rooms, parts of rooms or separate units with a high level of utility. On-site finishing work consists of activities related to the connection of modules and their components such as installations. Alternatively, they may include the execution of works whose technology precludes completion on site.

Modules in modular construction are innovative, prefabricated segments that are revolutionising the construction process. They are self-contained construction units that can be quickly and efficiently assembled on site to create durable and aesthetically pleasing buildings. Thanks to their repetition and manufacture in the factory, modules ensure short lead times, reduced costs and reduced risk of errors.

The use of modules makes it possible to build a wide range of facilities, from educational to commercial. A wide variety of buildings can be built from modules, such as schools, nurseries, kindergartens, dormitories, public buildings, office buildings, as well as healthcare facilities, sanatoriums or hotels, military facilities. Modular construction is distinguished by its short construction time, energy efficiency and minimised environmental impact, making it an attractive choice in terms of sustainability. See: Unihouse realisations.

Unihouse has built eight-storey modular buildings, including the Heimdalsporten project in Trondheim, Norway. It is technologically possible to build higher, but as the height increases, so do the fire protection requirements, which are costly. The financial viability of such a project must be determined on a case-by-case basis.

The lead time for modular construction depends on many factors, such as the complexity of the project, its size and specific requirements. Unihouse adapts the production and assembly schedule to the individual needs of each project. With prefabrication, Unihouse cuts construction time by up to half, compared to traditional methods. Structural components are manufactured in the factory, allowing rapid assembly on site. For a specific project, it is possible to obtain a timetable from Unihouse for the completion of the project.

Timber modular buildings are durable and can be compared to masonry buildings in terms of durability. The ETA certificate includes a lifespan of 50 years, which is the standard lifespan for permanent buildings regardless of the type of construction technology. Thanks to the use of suitable solutions and high-quality materials, timber frame structures are resistant to negative external influences. In addition, modular buildings are energy-efficient and have better thermal insulation than traditional brick houses.

Modular construction is typically cheaper and quicker to implement than traditional construction methods. The cost of building a module depends on a number of factors, including specification and design requirements. Modular construction can also provide cost savings through more efficient management of materials and the manufacturing process.

There is no standard dimension with Unihouse production. The technology is flexible and adaptable to individual project needs. Up to now, the width of the module has varied between 1.8 and 5.4 m, and the length has ranged from approximately 3 to 16.5 m. The module height for a building with a flat roof oscillates between 3 and 3.6 m, depending on the storey.

There are no standard dimensions for modules in Unihouse technology. This is determined on a case-by-case basis. There can be modules of different dimensions in one project.

Depending on your needs, it is possible to achieve different fire performance. Unihouse is certified for many partitions and classes. Some of the solutions are based on research that Unihouse has commissioned from the ITB laboratory, and some are based on solutions from well-known manufacturers of individual building materials. Unihouse has solutions for REI 90 and even REI 120 fire resistance.

Timber construction offers the potential for better thermal performance than traditional construction, while maintaining a more liveable microclimate inside the building. Unihouse adapts to the market, customer guidelines and the specific project. As standard, the basic partitions have higher parameters than required by Polish law.

It is possible to achieve the parameters of a passive or even low-energy building, as demonstrated by the Research and Development Building erected by Unihouse at 5 Rejonowa Street in Bielsko - check out the first zero-energy building from Unihouse.

The plot must meet the conditions as for traditional construction in order for a modular building to be constructed by Unihouse:

• Building requirements. The plot should be classified as a building site and meet local building regulations.
• Adaptation to ground conditions. Unihouse modular buildings can be erected on various types of land, including challenging land.
• Provision of suitable infrastructure. At the production stage, each module is equipped with the necessary utilities, so the plot must allow for connection to utilities such as electricity and sewerage.
• Preparing the foundation. Prior to the installation of the modules, it is necessary to prepare the foundations or other foundation in accordance with the design specifications.
• Possibility of access to the plot for large-scale transport and a crane for assembly.

It is also advisable to consult the local authorities for details of the requirements and procedures for constructing a modular building on the chosen plot.

Foundations for modular buildings are usually traditional footings or foundation slabs with the utilities discharged, on which the modules are then placed. Concrete foundations are adapted to the ground conditions and design loads. A timber building is lighter than a traditional building, so foundations for modules can be cheaper than for a traditional building. This is especially important in difficult areas such as post-mining areas with non-bearing ground layers requiring piles. It is important that the foundations are properly prepared and coordinated with the module manufacturer. Modular buildings also often use foundation slabs, which provide even load distribution and are quicker to construct than traditional foundations.

• • Construction process. Modular construction involves manufacturing the modules in a factory, which is quicker and less dependent on weather conditions, whereas traditional construction takes place on site.
  • Lead time. Modular buildings are usually ready in a shorter period of time because factory production allows construction and site preparation work to take place simultaneously.
  • Costs. Modular construction can offer lower overall costs due to more efficient materials management and reduced waste.
  • Flexibility. Modules can be easily adapted to different needs and requirements, and expanded or modified in the future.
  • Sustainability. Modular construction is often more environmentally friendly, as it minimises material waste and allows better control of emissions during production.

  These differences make modular construction an attractive alternative to traditional methods, especially for projects requiring rapid delivery and flexibility.

You are cordially invited to Unihouse for apprenticeships and work placements where you can learn modular construction. We offer you the opportunity to gain practical knowledge and experience in a rapidly growing industry. We organise training for architects and others interested in modular construction. We cooperate with many schools, including the Bialystok University of Technology, where our representatives often perform.