Steel Structures for a Rental Hall, Kuopio (2026)

Kuopion Rakenneasennus > Referenssit > Projektit

Client: TTwest Oy
Project: Steel Structures for a Multipurpose Rental Hall

Rakenneasennus Oy participated in the construction of TTwest’s project in Sorsasalo, Kuopio, as a subcontractor for the installation of steel structures. The project involved a variety of steel structure installation tasks that supported the functionality and usability of the facility in both production and office spaces.

During the project, we installed the frame structures for the overhead doors of the halls and constructed the structural frames for the offices built within the hall spaces. In addition, we were responsible for installing the exterior staircase and constructing several canopy structures. Inside the facilities, we installed platform structures for technical equipment, such as ventilation and air conditioning systems.

We also installed reinforcement for the electrical distribution centers at the site, which play a crucial role in ensuring the safe and durable operation of the building’s technical systems. The work involved several different installation phases, in which dimensional accuracy, safe working practices, and seamless collaboration with other contractors were paramount.

Steel structures play a central role in industrial and warehouse construction, and a successful outcome is the result of careful planning and professional installation work. In this project, we were able to apply our expertise in a wide range of steel structure installation tasks, from frame structures to support structures for technical systems.

Client: Construction company U. Lipsanen Oy
Project: Space trusses for the sports park swimming hall

Four massive space trusses were manufactured from start to finish for the Kouvola Sports Park swimming hall. A total of 60,000 kilograms of steel was used in these impressive structures, which gives an idea of their scale and the demands they placed on both manufacturing and installation. After the steel structures were joined, each truss was carefully sandblasted with an aluminum alloy and finished with a durable surface treatment. The result was a pure white RAL 9010 surface that fits in with the modern architecture of the swimming hall.

WhatsApp-Kuva 2025-12-08 klo 15.23.30_decc5425

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Client: International companies
Project: Manufacture of various storage tanks

Reliable tank manufacturing globally!

The past year 2025 has been active and diverse from a production perspective. During the year, we manufactured a total of approximately 20 horizontal and vertical tanks for various applications. The tanks were delivered in a wide range of sizes from 10 m³ to 1500 m³ for the storage of liquid substances such as water and oil. The tanks were manufactured in accordance with the API650 and SFS-EN 14015 standards.

The manufacture of the tanks began with a careful selection of materials. The steel plates were pre-treated and mended, i.e., bent into the shape of the tank shell and bottom structures. The shaped parts were assembled and welded in accordance with certified welding procedures (WPS). All necessary connections and fittings, such as flanges, manholes, pipe connections, and reinforcements, were installed in the tanks in accordance with customer-specific plans. The tanks were finished with surface treatment methods selected according to the application and environmental conditions, including spray cleaning and multi-layer corrosion protection coatings.

The manufacturing time varied between approximately 6 and 9 weeks, depending on the complexity of the tanks, which required flexible production planning and efficient project management from the supervisors in the midst of a busy schedule. As part of the overall deliveries, we also manufactured suction heaters and pressure piping that met PED requirements.

These projects demonstrate our ability to respond reliably and on schedule to the needs of international customers, even when the deliveries are technically demanding.

Client: Kreate Oy
Project: New wastewater treatment plant in Tohmajärvi

Kreate Oy carried out the construction of a new wastewater treatment plant in Tohmajärvi. The project started in early 2025, and construction was estimated to take 1.5–2 years, with completion scheduled for the end of 2026.
The new treatment plant was built to replace the oldest treatment plant in North Karelia, which was completed in 1978.

The project also included the demolition of the old plant.
The new plant was designed to treat wastewater from 3,000 residents and does not accept industrial wastewater.
The implementation planning for the project began in 2023 and was completed at the end of the same year. The planning included determining the building’s structures, foundation method, room layout, and technical systems.

Kuopion Rakenneasennus was responsible for the manufacture, delivery, and installation of the steel structures for the new wastewater treatment plant in Tohmajärvi. We manufactured all the steel structures and carried out the necessary lifting work with our own truck.

The steel structures included in the delivery were NDT-inspected, including:

Pillars, beams, diagonal supports, crane rails, maintenance platforms, railings, and hat trusses. These were hot-dip galvanized according to the customer’s wishes.

Kuopion Rakenneasennus completed the project in accordance with the requirements, on schedule, and as part of a larger project.

Client: Suomen Maastorakentajat Oy
Project: Bioenergy heating plant in Nilsiä

A new bioenergy heating plant was built in Tahkovuori, Nilsiä, in 2012 to replace the old heating plant, which used heavy fuel oil and no longer had sufficient capacity to produce the required heat output. The new bioheat plant significantly improves the reliability of district heating supply and enables wider use of renewable fuels.

As part of the project, we manufactured and installed several key steel structures for the plant, including:

Steel frames for the boiler building, receiving station, and screen
External and internal stairs for the boiler building
Emergency exit platforms and ladders for the receiving station
Aluminum glass wall for the building

We carried out the project in close cooperation with other parties, ensuring that the structures meet all quality and safety requirements and can withstand demanding operating conditions.

PED, kattilarakennus, teräsrungot, ulko- ja sisäportaat, hoitotasot, vastaanottoasema, hätäpoistumistasot, tikkaat, lämpökeskus, biolämpökeskus, kaukolämpö, toimintavarmuus, teräsrakenteet, EN 1090

Client: Lujatalo Oy
Project: New fire station in Lapinlahti

A new fire station has been completed in Lapinlahti, centrally located at the intersection of Route 5 and Pajuharjuntie.

The aim of the design was to create a landmark that would enhance the image of the municipality. We supplied the steel structures and stair tower for the project, which we manufactured, surface treated, and installed on site. The material used was RHS steel, which was hot-dip galvanized to ensure durability.

paloasema, porrastorni, EN 1090, teräsrakenteet, runkorakenteet, kantavat teräsrakenteet, RHS teräs

Putkisilta, ruotumaton teräs, teräskehikoita, kannakkeet, pumpun peti, teräsrunko, rikkihappotuotanto

Client: City of Savonlinna
Project: Savonlinna bridge project

The aim was to develop the Savonlinna market square and harbor area to make it more functional, which is why a new light traffic bridge was built over Haapasalmi to connect the market square and the opposite shore of Puistokatu.

We manufactured the 120-meter-long arch bridge in several parts in our hall. The finished structures were hot-dip galvanized and painted by a subcontractor, after which the frame parts were test assembled in our yard to ensure their fit and quality before delivery.

In Savonlinna, the frame elements were installed in place and finished with wooden cladding, which gives the bridge both durability and an aesthetically pleasing appearance in its surroundings. The project was carried out in close cooperation with various parties, ensuring that the bridge was commissioned on schedule.

Teräsrunko, silta, runkoelementit, teräspalkki

Client: Lehtoniemi wastewater treatment plant
Project: Extensive renovation of wastewater treatment plant

The Lehtoniemi wastewater treatment plant underwent extensive renovation between 2013 and 2015. The renovation included the expansion of the plant’s biological treatment process, the construction of a new post-treatment unit, and the replacement of old process machinery and equipment.

We manufactured a wide range of steel structures for the project, including steel frames for the maintenance building and storage building, as well as railings and maintenance platforms for the treatment tanks. As part of the renovation, we also carried out maintenance work on the gasometer. We filled the gasometer with biogas, after which the tank was lifted and supported while the pipes were replaced.

We are proud to be involved in developing the infrastructure of the Lehtoniemi wastewater treatment plant and supporting its efficient and sustainable operation.

huoltorakennuksen ja varastorakennuksen teräsrungot, kaiteet, huoltotasot käsittelyaltaisiin, kaasukellon huoltotyö, PED, EN 1090, teräsrakenteet, runkorakenteet,

Client: Prisma
Project: Advertising tower for Prisma in Imatra

We manufactured the entire advertising tower for the new Prisma in Imatra at our own engineering workshop.
After manufacturing the structure, the tower was surface-treated in our paint shop with quick-drying, flexible polyurethane paint in the shade #MKLVALKOINEN, after which the advertisements were installed. The finished tower was delivered to the construction site and lifted into place.

mainostorni, prisman mainostorni, terästorni, teräsrakenteet, EN 1090, runkorakenteet,

mainostorni, prisman mainostorni, terästorni, EN 1090, teräsrakenteet, runkorakenteet,

Client: Savon Sellu
Project: Manufacture of a bark cyclone

The bark cyclone used at Savon Sellu’s power plant efficiently transports bark, which is used as fuel, forward in the process. We manufactured a new bark cyclone from stainless steel at our machine shop, ensuring its durability in demanding operating conditions.

As the cyclone is exposed to severe abrasive wear, its inner surface was lined with specially manufactured wear plates by welding, which extends the service life of the structure. During installation, we removed the old cyclone and optimized the alignment of the shell inlet pipe to minimize wear and improve the reliability of the equipment.