ᐅ Separate Apartment for Parents: 210 m² Detached Single-Family House with an 80 m² Self-Contained Apartment
Created on: 22 Apr 2017 18:22
S
schustrik
Hello everyone,
We are planning to build a house with a separate apartment for parents.
The main house will have two full stories and a hip roof, and to reduce costs a bit, the separate apartment and the garage will have flat roofs.
The house will be built in a new development, and I have already designed the floor plan.
The plot measures 924 m² (11,470 sq ft) and is numbered 30 on the site plan.
Site coverage ratio: 0.4
Floor area ratio: 0.6
Building height: 4.5 - 6.5 meters (15 - 21 feet)
The driveway can only be on the west side because there will be a bus stop on the south side.
What concerns me:
On the upper floor, the east wall runs right above the living and dining area and is actually only supported by the wall between the stairwell and the storage room of the separate apartment. Could this cause any structural issues?
I have drawn the exterior walls as 45 cm (18 inches) thick and the interior walls as 15 cm (6 inches). Load-bearing walls could probably be reduced to 20-22 cm (8-9 inches).
The “wet rooms” like bathrooms and toilets are spread throughout the house, and the separate apartment will have its own heating system. The sewer drainage gullies are located at the south edge of the plot near the bus stop.
We are planning to build a house with a separate apartment for parents.
The main house will have two full stories and a hip roof, and to reduce costs a bit, the separate apartment and the garage will have flat roofs.
The house will be built in a new development, and I have already designed the floor plan.
The plot measures 924 m² (11,470 sq ft) and is numbered 30 on the site plan.
Site coverage ratio: 0.4
Floor area ratio: 0.6
Building height: 4.5 - 6.5 meters (15 - 21 feet)
The driveway can only be on the west side because there will be a bus stop on the south side.
What concerns me:
On the upper floor, the east wall runs right above the living and dining area and is actually only supported by the wall between the stairwell and the storage room of the separate apartment. Could this cause any structural issues?
I have drawn the exterior walls as 45 cm (18 inches) thick and the interior walls as 15 cm (6 inches). Load-bearing walls could probably be reduced to 20-22 cm (8-9 inches).
The “wet rooms” like bathrooms and toilets are spread throughout the house, and the separate apartment will have its own heating system. The sewer drainage gullies are located at the south edge of the plot near the bus stop.
S
schustrik6 May 2017 23:2611ant schrieb:
I would prefer three meters (10 feet) to the side, so you still have parking spaces between the garage and the boundary, and you won’t be looking at cars from the garden. If to the side, then the main house would also move three meters (10 feet) further south, so it would be better to move the garage three meters (10 feet) forward instead.
11ant schrieb:
Balconies as a makeshift solution because the floor area assigned to the ground floor slightly “overhangs” are not really ideal. In this case, where the balconies are about 30% the size of the rest of the upper floors, that would work for one-and-a-half-story houses, but not like this. Balconies could be planned narrower with better design, but there are houses where even the secondary apartment has a flat roof with a balcony on top. There, the "balconies" are 50% in size. Currently, my house is 10 meters (33 feet) deep and the balconies extend 3.5 meters (11.5 feet).
11ant schrieb:
Stylistically not, because these “stepped upper floors” only fit with flat roofs, but combined with a hipped roof it's like fries with cream. Also, in the floor area calculation, such large balconies are already a disturbance. Two full stories are allowed.
11ant schrieb:
That’s not as simple in terms of insulation as it sounds. The parapet on top is an exterior component, so you need thermal break elements ("isolation baskets") all around, because the outer wall below is interior to heated rooms. Do you mean something like this? Number 8 shows some insulation. Isolation baskets would be in the horizontal concrete slab?
11ant schrieb:
If balconies at all, then with a recessed parapet (sort of like a knee wall) behind a roof slope projection. Like this? I wanted to avoid that for cost reasons; that would add separate gutters and make construction more complicated.
schustrik schrieb:
Two full stories are allowed.11ant schrieb:
Stylistically no, because these "setback stories" only work well with a flat roof, but combined with a hip roof, it looks like fries with whipped cream. And in the floor area ratio calculation, such large balconies are already a problem.What I meant was that the design element "setback story" is associated with the "cube" architectural style, and combining it with a hip roof causes a clash of styles.
Regarding the floor area ratio, I was not referring to the full-story issue, but that every square meter of unnecessarily large balcony counts towards the floor area ratio. Roof area does not.
schustrik schrieb:
Do you mean something like this? Number 8 is some kind of insulation. Is the thermal break then in the horizontal concrete slab?Yes, that’s what I meant.
And no, number 8 is the thermal break element (Isokorb).
schustrik schrieb:
Like this?No!!! :-(
That’s the quick fix for "Andalusian city villa" in Mettmann.
I definitely did not mean roof slopes draped externally like a petticoat. I mean, literally, the roof “cut off at the top edge of the knee wall.” This reduces the balcony area to a normal size and also structurally separates the parapet from the exterior wall of the ground floor without the need for a thermal break element (Isokorb).
schustrik schrieb:
I wanted to avoid that for cost reasons, then you get extra gutters and the whole thing is more complicated to build.It’s not that much more complicated to build. The house won’t fail because of the extra fifty or so for the gutters. You’re just afraid it will look good. What do you like about ugly, chaotic building shapes?
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S
schustrik7 May 2017 02:5511ant schrieb:
It’s not really that much more complicated to build. The house won’t fail because of the fifty-three dollars for the gutters. You’re just afraid it will look good. What do you find so great about a horrible jumble of building shapes?What if the “heated rooms” are inside the house, with the upper floor above, and then the extension at the back is smaller and only contains the back entrance with storage rooms?
The extension would then be about 3 x 5 meters (10 x 16 feet) from the outside. Example:
schustrik schrieb:
What if the "heated rooms" are inside the house [...] and there is only the back entrance with storage rooms there? That would be more energy efficient. I hadn’t realized you were considering the hip roof so flat until now—my suggestion obviously doesn’t work well with that.
The extension now also matches those proportions better and looks much less like an add-on if you integrate the upper floor terrace with a sloping roof.
I would give the garage the same roof covering to create a cohesive overall look.
What is that in the garden: a well or a barbecue station?
https://www.instagram.com/11antgmxde/
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S
schustrik9 Jul 2017 18:32ypg schrieb:
Let’s get straight to the point: how much should the construction of a house cost (excluding additional construction-related expenses)?
Regards, YvonneSome time has passed, so the cost without additional expenses and without land is 320–340 € (euros).Could you share your thoughts on this plan?
The single-family house has about 190 m² (2,045 sq ft) of living space, excluding the garage and the storage room at the back. The apartment unit is around 45 m² (485 sq ft).
So, both the floor area ratio and plot ratio have not been exceeded.
What we are considering is whether to have an open plan kitchen and living room in the single-family house, without a wall in between, and to have double doors from the hallway directly into this "room." In that case, the fireplace would need to be located elsewhere.
Ground floor:
First floor:
Paving:
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