In the southern part of Trondheim, HeimdalsPorten was built – a complex of four seven- and eight-story residential buildings, each containing 204 apartments ranging in size from 41 to 108 m². The distinct shapes were adapted to the terrain and surrounding buildings, leaving space for greenery and a sunny playground. This investment in Trondheim demonstrates the practical application of wooden modular technology in buildings up to eight stories high.
See how HeimdalsPorten was created and how moving a significant part of the work from the construction site to the factory influenced the entire project.
Challenge – 8 floors in wooden technology
The construction of four 7- and 8-story buildings using modular wooden structures required a precise integration of architectural, urban planning, and structural design principles. The project included 204 apartments, ranging in size from 41 to 108 m², arranged in a point-by-point arrangement around the main circulation core. This layout allowed for optimal use of space and met building height requirements.
The difference in ground elevation was a significant factor. Two buildings were partially recessed, allowing for the use of underground storage spaces. The main entrances were designed from the inner courtyard and highlighted in color to clearly distinguish them within the development.
Additionally, it was necessary to adapt the building heights to the adjacent residential development and ensure appropriate acoustic and functional conditions. The scale of the project and its implementation in Norway required close design and implementation coordination at every stage of the project.
From design to assembly – comprehensive implementation of Unihouse
The project was implemented using the "design and build" formula, meaning Unihouse S.A. was fully responsible for both the development of multi-discipline construction and execution documentation and the turnkey construction of the four buildings. The scope of work included the construction of prefabricated 3D modules with a wooden frame structure, along with complete plumbing, electrical, mechanical ventilation, and sprinkler systems.
The modules were manufactured at the Modular Building Factory in Bielsk Podlaski under controlled production conditions, utilizing automated processes and specialized assembly stations. The completed components were transported to the construction site in Trondheim, where they were assembled by crane and then assembled into the final building structure. This approach ensures repeatability, high precision, and control over the construction schedule.
Each building is initially created as a detailed digital model. The project is developed using BIM (Building Information Modeling) technology, which allows for verification of structural and installation solutions before production begins. This allows for the detection of potential conflicts, optimization of installation layouts, and planning of finishing elements. This model becomes the foundation for efficient implementation during the production and assembly stages.
See the project step by step:
Technology that lets you build faster and higher
The technology of prefabricated 3D modules with a wooden frame structure used at HeimdalsPorten Trondheim allows for a significant portion of the construction process to be transferred to the production hall. The modules are manufactured in a controlled factory environment, where not only the structural elements are assembled, but also the plumbing, electrical, and telecommunications systems, and even selected finishing elements, such as furniture. Completed building segments are delivered to the construction site, transported, and assembled at the final location.
This approach allows for parallel production and preparatory work on-site, significantly shortening the construction schedule. At the same time, high repeatability and quality of workmanship are maintained, confirmed by rigorous quality controls during the production phase.
The wooden modular structure meets fire safety, acoustic, and energy efficiency requirements. Carefully selected materials and design solutions enable the building to achieve high performance parameters and durability while maintaining its low-emission nature. The HeimdalsPorten project confirms the feasibility of using prefabricated wooden modules in seven- and eight-story buildings, built in the demanding Norwegian market. The HeimdalsPorten project confirms the feasibility of using prefabricated wooden modules in seven- and eight-story buildings, built in the demanding Norwegian market.
HeimdalsPorten in numbers
The scope of the project in Trondheim included both the development of design documentation and the construction of four residential buildings.
The key project parameters are as follows:
- 4 multi-family buildings (A, B, C, D)
- 2 seven-story buildings and two eight-story buildings
- 204 residential units
- 11,935 m² of total usable area
- 16,816 m² of total area
- Building heights: 22,222 m and 25,710 m
- Construction period: February 14, 2019 – February 11, 2022
The result – a functional housing estate in Scandinavian standards
HeimdalsPorten is a cohesive residential complex nestled in the southern part of Trondheim. The distinct volumes of varying heights have been adapted to the surroundings and terrain, creating a structured structure with an internal courtyard, green areas, and a playground. The location provides convenient access to the city center, and the Superbus line runs directly adjacent to the development, connecting the complex with major thoroughfares.
The architecture is based on a natural palette of white, gray, and beige, complemented by accents of yellow and orange that highlight the entrances and structure the composition. The rectangular forms are diversified with subtle color details, giving the buildings a distinct yet subdued character. Maintaining the characteristic Scandinavian minimalism of the style is also a key element.
The choice of modular technology provided the investor with predictable implementation – from the BIM model to the assembly of the buildings in Trondheim. Most of the work was performed in-house, reducing the risk of delays and ensuring high quality workmanship. The wooden modular structure ensures both good energy performance and durability, which are highly valued in the market.
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