Residential ventilation for Aalst, Belgium

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  • For the Pier Kornel project, a residential area with four apartment blocks and 14 terraced houses in Aalst, Belgium, Lindab is delivering its Safe duct system and MBB plenum boxes to ventilation contractor Brontec. The Pier Kornel homes are being built as low-energy homes in line with European­standard E50, which places strict demands on the duct system’s sealing and simple adjustment capabilities, among other things. (Copyright: CES)
  • An overview clearly shows how the duct system is placed between the reinforcement spacers for casting into the joist. A complete duct system and MBB boxes in a storey joist takes no more than a day to install.
  • Both the Lindab duct system and the MBB plenum boxes, which are connected to the apartments’ diffusers, are fully cast into the joist at Pier Kornel. Since the architects wanted the maximum ceiling height in the apartments, the joists are as thin as possible. With the Lindab solution this was not a problem.
  • Both the Lindab duct system and the MBB plenum boxes, which are connected to the apartments’ diffusers, are fully cast into the joist at Pier Kornel. Since the architects wanted the maximum ceiling height in the apartments, the joists are as thin as possible. With the Lindab solution this was not a problem.
  • All that can be seen of Lindab’s delivery after casting are the duct spigots or MBB openings in the ceiling. There is a complete Lindab duct system cast into each storey’s joists.

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Story in short:

• Smart Lindab solution replaces prescribed one
• Lindab Safe duct systems and components
• MBB plenum boxes
• Low-energy homes as per E50

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Pier Kornel

​Cast solution for simplified construction

Replacing the prescribed solution with a Lindab one helped to realise more benefits in the Pier Kornel residential project in Aalst, Belgium. “Faster installation, a better-sealed duct system and full air flow adjustment capability – despite the fact that the entire Lindab delivery is cast in concrete,” says Dominik Stofferis of Brontec. “And all in line with European standard E50 for energy-efficient homes.”

In Aalst, north-west of Brussels in Belgium, a comprehensive transformation is taking place as an area of around 14 hectares is being made into a new, green, energy-efficient part of the town centre. An old Tupperware factory has been demolished, and one of the first projects under way is Pier Kornel, a residential area with four apartment blocks and 14 terraced houses. They are being built as low-energy homes according to European standard E50. Lindab is delivering its Safe duct system and MBB plenum boxes to Pier Kornel and contractor Brontec.
 

Cast sealing and full adjustment capability

“Since the whole project has been planned as low-energy homes, this obviously also applies to the buildings’ ventilation systems,” explains Krist Viaene of Lindab. “The challenge for the system, however, was architects Pascal François’ desire for maximum ceiling height in the apartments and the thinnest possible joists. This presented problems for the prescribed duct system, with its semi-flexible ducts and inadequate sealing. However, we were able to offer a satisfactory Lindab solution that not only solved these problems but also offered other benefits.”
 

The solution recommended by Lindab has really lived up to all expectations, giving us a sealed, energy-efficient system

Dominik Stofferis, Project Manager at Brontec

Krist and the Lindab team instead suggested a solution based on the Lindab Safe duct system and MBB plenum boxes. “Thanks to Lindab Safe’s tightness class D, and the precise air flow control of the MBB box through its diffuser opening, the ducts and boxes could be fully cast into the thin joist,” Krist continues. “We were able to convince both Brontec and the main contractor Wyckaert, and quickly got the approval to start working out the details of the casting with them.”
 

Simplified construction

“The solution recommended by Lindab has really lived up to all expectations, giving us a sealed, energy-efficient system,” says Dominik Stofferis, Project Manager at Brontec. “It also saves us a lot of time as everything is cast in and can be installed very quickly and easily. The whole installation process for a complete joist is just one day, far quicker and simpler than the solution originally planned.”

Installation started in August 2015 and was completed in January 2016. By then Brontec had cast in some 420 MBB boxes and many hundreds of metres of Lindab Safe, contributing to energy-efficient living for the 200 or so people who will be moving into Pier Kornel in the spring. “As before, Lindab has delivered a very high level of quality, service and know-how. Their support and the technical review before we started the actual installations were perfect and enabled our installation work to run problem-free. Even when there was a misunderstanding with the main contractor and we suddenly needed all the materials for a joist two days later, Lindab solved the problem. We were delighted with Lindab before, and this latest project has only confirmed our opinion of them as a partner. Simplified construction is something Lindab really are great at,” Dominik Stofferis concludes with a smile.