ᐅ Modernist Concrete Villa with Cavity Wall Insulation – Experiences
Created on: 11 Sep 2018 07:32
R
rick2018
Hello everyone,
I just wanted to briefly introduce myself and say thank you.
For about a year and a half, I have been a silent reader here to gather inspiration and especially to gain more knowledge about construction technology.
Now a bit about me:
After more than a year of searching for a plot of land, I was able to purchase one from a developer who couldn’t move forward quickly with his plans.
So we found our dream plot (good location, 2500 m² (0.62 acres), slight slope, underground private spring that we have to preserve and are allowed to use).
There was an old house on the property, which we have since demolished.
There is no zoning plan, so §34 applies. During an initial informal inquiry at the building authority, almost everything we planned was rejected.
So we submitted an official preliminary building inquiry, involved the right people, and had lengthy discussions. In the end, we received a positive decision.
Therefore, there is nothing standing in the way of the building permit. The building permit should be granted within the next few weeks as there are no changes from the preliminary inquiry.
My wife (37) and I (36) want to build a Bauhaus-style villa in southern Baden-Württemberg.
It will be constructed from concrete (with core insulation) or in combination with insulated precast elements.
A lot of glass (full-glass system), textile shading, KNX, fast network both wired and wireless, strong mechanical ventilation with additional cooling coils, stainless steel pool, large cistern, and more.
The electrical planning must be 100% spot on since it’s almost impossible to make changes afterward.
Since I am friends with an architect from a larger firm, it was clear which route we would take. Such a house can basically only be realized with an architect.
I also personally know the electrician and KNX system integrator, as well as the owners and work approach of the heating, plumbing, and ventilation companies involved.
Some trades have already been contracted, and part of the equipment has already been ordered.
I’m really looking forward to getting started and to the final result. The goal is to move in by the end of 2019.
Once again, many thanks for the information I have received from you so far.
If you have any questions, just let me know.
Attached is the design, though not the final version. There have been a few minor changes.
Greetings from Swabia
I just wanted to briefly introduce myself and say thank you.
For about a year and a half, I have been a silent reader here to gather inspiration and especially to gain more knowledge about construction technology.
Now a bit about me:
After more than a year of searching for a plot of land, I was able to purchase one from a developer who couldn’t move forward quickly with his plans.
So we found our dream plot (good location, 2500 m² (0.62 acres), slight slope, underground private spring that we have to preserve and are allowed to use).
There was an old house on the property, which we have since demolished.
There is no zoning plan, so §34 applies. During an initial informal inquiry at the building authority, almost everything we planned was rejected.
So we submitted an official preliminary building inquiry, involved the right people, and had lengthy discussions. In the end, we received a positive decision.
Therefore, there is nothing standing in the way of the building permit. The building permit should be granted within the next few weeks as there are no changes from the preliminary inquiry.
My wife (37) and I (36) want to build a Bauhaus-style villa in southern Baden-Württemberg.
It will be constructed from concrete (with core insulation) or in combination with insulated precast elements.
A lot of glass (full-glass system), textile shading, KNX, fast network both wired and wireless, strong mechanical ventilation with additional cooling coils, stainless steel pool, large cistern, and more.
The electrical planning must be 100% spot on since it’s almost impossible to make changes afterward.
Since I am friends with an architect from a larger firm, it was clear which route we would take. Such a house can basically only be realized with an architect.
I also personally know the electrician and KNX system integrator, as well as the owners and work approach of the heating, plumbing, and ventilation companies involved.
Some trades have already been contracted, and part of the equipment has already been ordered.
I’m really looking forward to getting started and to the final result. The goal is to move in by the end of 2019.
Once again, many thanks for the information I have received from you so far.
If you have any questions, just let me know.
Attached is the design, though not the final version. There have been a few minor changes.
Greetings from Swabia
S
Steffen806 Jul 2019 12:33rick2018 schrieb:
@Jenpa
The garage is intended only as a parking space for vehicles. Of course, also for bicycles, some tools, etc., but not as a hobby workshop or similar. It is within the thermal envelope and receives warm air through the generously sized controlled mechanical ventilation system. However, there are no radiators or underfloor heating.
Do you have a link to your project? I would like to take a look as well.We installed heating in the garage. I would do it again every time. A controlled mechanical ventilation system alone is never enough to provide significant warmth to your garage. Otherwise, the drafts would be too strong. With a controlled mechanical ventilation system, you can neither heat nor cool – that is just marketing talk.
rick2018 schrieb:
Do you have a link to your project? I’d like to take a look as well.How fitting. We’re just on our way to the architect now and hope to be ready for the building permit / planning permission application.Thanks again for the garage dimensions. That’s on our agenda today as well.
Edit: The plan is a double garage with an internal size of 6 x 6 meters (20 x 20 feet). That should be enough, right? Bikes will have their own shed. Heating/ventilation probably not, as I don’t yet have the right equipment for that.
@Steffen80 Of course, heating or cooling with air is possible. The air exchange rate just needs to be above 4. It is also insulated.
With a normal exchange rate of 0.3, I agree that it sounds like typical sales talk.
We don’t have a standard controlled ventilation system but additionally a large air conditioning unit on the supply air.
As soon as you park a warm car with a big engine inside, the temperature rises anyway.
We only want to warm it slightly, not to the same temperature as inside the house. For me, it’s enough to have about 10°C (50°F) in winter to comfortably wash a car using rinseless wash.
With a normal exchange rate of 0.3, I agree that it sounds like typical sales talk.
We don’t have a standard controlled ventilation system but additionally a large air conditioning unit on the supply air.
As soon as you park a warm car with a big engine inside, the temperature rises anyway.
We only want to warm it slightly, not to the same temperature as inside the house. For me, it’s enough to have about 10°C (50°F) in winter to comfortably wash a car using rinseless wash.
@Jenpa A 6m x 6m (20ft x 20ft) double garage is a comfortable size. Of course, with more width, it would be easier to open the doors fully. I would at least plan for a ducted ventilation system with heat recovery (electric). This way, you can reduce moisture buildup. Are you planning drainage in the garage? Hot and cold water connections? Have fun with the architect.
S
Steffen806 Jul 2019 15:15rick2018 schrieb:
@Steffen80 Of course, you can heat or cool with air. The air exchange rate just needs to be above 4. It’s also insulated.
At a normal exchange rate of 0.3, I agree with you that it’s just sales talk.
We don’t have a “normal” controlled ventilation system but an additional large air conditioning unit in the supply air.
As soon as you park a warm car with a big engine inside, the temperature rises anyway.
We only want to warm it up a little, not to the same temperature as the house. It’s enough for me in winter to have about 10°C (50°F) so I can comfortably wash the car using rinseless shampoo. If you operate the controlled ventilation system at an air exchange rate of 4... good luck in that drafty building. It seems to me you were very poorly advised here! When our controlled ventilation runs at 200 cubic meters per hour (m³/h) for a house volume of 1200 cubic meters (m³), I already feel the airflow near the doors at foot level. An exchange rate of 4 for us would mean 4800 m³/h. Technically possible, but absolutely ridiculous and nobody does that.
If you feel drafts at the doors, it means they are experiencing air leakage. In our case, most areas have separate supply and exhaust ventilation.
I have the right experts on board—a reputable HVAC company (500 employees) plus a specialist firm for air conditioning. And Helios doesn’t really know either. I also know the bosses personally.
Have you ever been inside a cleanroom at a semiconductor manufacturer? The air exchange rates there are completely different, and you don’t get drafts. It always depends on where and at how many points you introduce and extract air...
As I said, a standard mechanical ventilation system with heat recovery is not designed for cooling or heating. High air exchange rates also cause issues (drafts and noise).
Properly designed and implemented, using air for cooling or heating is proven technology.
An air conditioning split system also blows air into the room.
We simply have a large central split system.
I have the right experts on board—a reputable HVAC company (500 employees) plus a specialist firm for air conditioning. And Helios doesn’t really know either. I also know the bosses personally.
Have you ever been inside a cleanroom at a semiconductor manufacturer? The air exchange rates there are completely different, and you don’t get drafts. It always depends on where and at how many points you introduce and extract air...
As I said, a standard mechanical ventilation system with heat recovery is not designed for cooling or heating. High air exchange rates also cause issues (drafts and noise).
Properly designed and implemented, using air for cooling or heating is proven technology.
An air conditioning split system also blows air into the room.
We simply have a large central split system.
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