ᐅ Building a Concrete Garage! Three Walls or an Extension to the House? What Do You Think?
Created on: 13 Jul 2018 11:00
K
kingstiefel
Hello everyone,
We are building a prefabricated house in NRW with the company Scanhaus Marlow Marlow. The building permit / planning permission process is currently underway. What was already clear to us beforehand is that Scanhaus Marlow Marlow is not involved in the garage construction. Therefore, we are currently focusing quite intensively on this topic.
After thorough research, we would like to have a concrete garage. For various reasons, we decided against steel. Unfortunately, it is very difficult for us to install a prefabricated concrete garage. The garage is planned to be placed on the left side of the house, under the roof overhang. The roof overhang has a height of 3m (10 feet) and is 1.20m (4 feet) wide. For this reason, hardly any prefabricated concrete garage manufacturers can install the garage at our location. Of course, there are also concrete garage manufacturers who produce "concrete individual parts" and assemble them on site.
We have now met with an architect who is going to design and estimate a masonry garage for us. He proposed building a garage with three walls plus a roof. The fourth wall would then be the house wall. From our house planning discussions, we know that no trades or fixtures may be attached to our house. The architect explained that the house does not have to bear any load or similar, as this is supported by the three garage walls. Of course, we understand that nothing can be attached to the fourth wall (house wall). This would be acceptable to us. An advantage of this idea is that we would save the cost of an additional wall and have roughly 20cm (8 inches) more space in the garage (due to the missing extra wall).
I have never heard of such a solution before. Does anyone have experience with this?
We have concerns regarding structural engineering, insulation, etc.
We would appreciate any feedback.
Best regards
We are building a prefabricated house in NRW with the company Scanhaus Marlow Marlow. The building permit / planning permission process is currently underway. What was already clear to us beforehand is that Scanhaus Marlow Marlow is not involved in the garage construction. Therefore, we are currently focusing quite intensively on this topic.
After thorough research, we would like to have a concrete garage. For various reasons, we decided against steel. Unfortunately, it is very difficult for us to install a prefabricated concrete garage. The garage is planned to be placed on the left side of the house, under the roof overhang. The roof overhang has a height of 3m (10 feet) and is 1.20m (4 feet) wide. For this reason, hardly any prefabricated concrete garage manufacturers can install the garage at our location. Of course, there are also concrete garage manufacturers who produce "concrete individual parts" and assemble them on site.
We have now met with an architect who is going to design and estimate a masonry garage for us. He proposed building a garage with three walls plus a roof. The fourth wall would then be the house wall. From our house planning discussions, we know that no trades or fixtures may be attached to our house. The architect explained that the house does not have to bear any load or similar, as this is supported by the three garage walls. Of course, we understand that nothing can be attached to the fourth wall (house wall). This would be acceptable to us. An advantage of this idea is that we would save the cost of an additional wall and have roughly 20cm (8 inches) more space in the garage (due to the missing extra wall).
I have never heard of such a solution before. Does anyone have experience with this?
We have concerns regarding structural engineering, insulation, etc.
We would appreciate any feedback.
Best regards
T
Traumfaenger14 Jul 2018 23:54Steven schrieb:
A prefabricated house is not a concrete bunker.
If you crash your car into it, you’ll probably end up in the living room. You can break through the walls with a decent hammer. You’re not serious, are you? I would argue that even with a decent hammer, you wouldn’t be able to break through the first layer of a Fermacell board in a double-layer drywall from the inside. And from the outside, it would also be quite difficult, although this certainly depends on the wall construction of the respective manufacturer.
As for whether 20cm (8 inches) thick wooden beams spaced 60cm (24 inches) apart give way to a car more quickly than glued bricks, I can’t say. But the modern “solid” construction method with lots of foam insulation and little mass doesn’t really remind me of the old stone castle many people seem to imagine.
By the way: even glass can be surprisingly durable. Have you ever seen glaziers trying to break a WK2-rated window pane for disposal? You can lay it on two supports and jump on it as an adult, and nothing will happen.
B
Bieber081515 Jul 2018 07:43Are we talking about the long side of the garage? How is anyone supposed to drive in there? That seems totally unrealistic... Sooner or later, someone will probably scrape the wall (especially if they're squeezing between the car and the wall holding a crate of beer and trying not to damage the car). But no one will see it ;-)
By the way, I find it hard to believe that you can't place a prefabricated garage under the roof overhang. But since we don’t have a site plan or drawings, maybe that’s correct after all.
If the space is not critical (those roughly 12cm (5 inches)), I would build four walls. Either a prefabricated garage, masonry, aerated concrete blocks, or a timber frame...
By the way, I find it hard to believe that you can't place a prefabricated garage under the roof overhang. But since we don’t have a site plan or drawings, maybe that’s correct after all.
If the space is not critical (those roughly 12cm (5 inches)), I would build four walls. Either a prefabricated garage, masonry, aerated concrete blocks, or a timber frame...
Traumfaenger schrieb:
This isn’t meant seriously, is it? .Hello
I admit that I haven’t really looked closely at prefabricated houses for 30 years. Back then, they were timber frame constructions with fragile walls. Insulation was excellent, but structural strength was lacking. How they are nowadays? I still think they tend to be somewhat fragile.
For my own house, I focused on security. The entire house is built to Resistance Class WK2 (including the roof). It has 24 cm (9.5 inches) sand-lime brick walls with facing brick in front. The windows are WK2 rated and equipped with an alarm system. The basement is a bit more sturdy, including a panic room. You could say I’m a little paranoid.
Steven
C
Caspar202015 Jul 2018 08:56Bieber0815 schrieb:
By the way, I find it hard to believe that you can’t place a prefabricated garage under the roof overhang.But that’s the case; most crane operators and installers reject this afterwards. The risk of accidentally hitting the roof above is simply too high. After all, the garage is secured at all four corners with chains, ropes, or straps.
That’s why it’s common practice to first install the garage and then build or position the house.
B
Bieber081515 Jul 2018 09:28Caspar2020 schrieb:
After all, the garage is secured at all four corners with chains, cables, or straps. Single garages are usually unloaded lengthwise from the truck, meaning without a crane. However, even in this case, sufficient clearance height is required, that's true.Caspar2020 schrieb:
But that’s how it is; afterward, most crane operators and installers decline. The risk of somehow reaching the roof above is simply too high. After all, the garage is secured at all four points with chains, ropes, or straps.Bieber0815 already mentioned it. Just search for "delivering prefabricated garage," and you’ll find some images showing how prefabricated garages are unloaded and positioned from (specialized) trucks. It only requires a few centimeters (inches) of clearance at the top—maybe that could work?
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