ᐅ Apartment Ventilation – Incorrect Ceiling Penetration Placement
Created on: 27 Oct 2016 14:53
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GrekMü
Hello everyone,
I have the following problem:
We are currently building a single-family house with a central mechanical ventilation system. When the concrete ceiling was being poured, the opening for the ventilation ducts was placed incorrectly. In other words, the ventilation ducts come out of the ceiling at a problematic spot and now have to be rerouted. My site manager told me that the ducts will be redirected to the correct location using flat duct channels installed in the screed, and that this should not be an issue. There are 6 ducts (I believe 70mm (2.8 inches) in diameter) passing through the ceiling. I’m a bit skeptical about this solution. The planned floor construction is 19cm (7.5 inches) thick, including insulation and underfloor heating. What is your assessment of the situation? What should I watch out for? Is this generally allowed? Could there be noise problems caused by switching the duct system?
I am grateful for any input!
I have the following problem:
We are currently building a single-family house with a central mechanical ventilation system. When the concrete ceiling was being poured, the opening for the ventilation ducts was placed incorrectly. In other words, the ventilation ducts come out of the ceiling at a problematic spot and now have to be rerouted. My site manager told me that the ducts will be redirected to the correct location using flat duct channels installed in the screed, and that this should not be an issue. There are 6 ducts (I believe 70mm (2.8 inches) in diameter) passing through the ceiling. I’m a bit skeptical about this solution. The planned floor construction is 19cm (7.5 inches) thick, including insulation and underfloor heating. What is your assessment of the situation? What should I watch out for? Is this generally allowed? Could there be noise problems caused by switching the duct system?
I am grateful for any input!
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Bieber08152 Nov 2016 08:42Is this a shaft for 8 main ducts that is planned to be in a corner of the bathroom but is now positioned right in the middle of a door?
Based on limited knowledge, since I neither understand the plan (section) nor your construction project, I would say this suggestion is flawed. It looks like you will have two additional 90° bends in your ducts each time. Your site manager should have the ventilation specialist approve this to check whether pressure losses and other factors are still acceptable and if the system will remain maintainable in the future.
Based on limited knowledge, since I neither understand the plan (section) nor your construction project, I would say this suggestion is flawed. It looks like you will have two additional 90° bends in your ducts each time. Your site manager should have the ventilation specialist approve this to check whether pressure losses and other factors are still acceptable and if the system will remain maintainable in the future.
Yes, your assumption is correct. The shaft for the 8 main ducts was installed right in the door of the home office instead of in the corner of the bathroom. I also wonder if it’s even possible with 8 flat ducts. To maintain the average size, they would have to be relatively large flat ducts, which are then routed through the wall. The two additional 90° bends and the change in duct shape are really concerning to me as well....
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Bieber08152 Nov 2016 09:48How many floors are there? Will the shaft continue? What is below the level shown in the section, and what is above?
There are a total of three floors (ground floor, first floor, and attic). The living room is located beneath the shaft. The main pipes run directly within the concrete ceiling to the respective outlets. Above the bathroom and the study is the utility room with the technical center. The opening in the ceiling to the attic is correctly positioned (i.e., in the bathroom). Now the incorrectly installed pipes need to be rerouted there into the bathroom and from there up to the technical room.
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