ᐅ Porous concrete bungalow – experiences? DIY beginner questions!
Created on: 24 Apr 2018 10:38
G
GooSe_77
Hello everyone,
We have been considering building or buying a house for some time now, and we would like to move forward and start planning more concretely. However, I feel overwhelmed by all the information available online—or sometimes not available—and I would like to discuss my idea here with you.
I want to do as much as possible myself, I’m not necessarily unskilled, and currently, I have enough time.
The desired living space would be a bungalow with 2-3 bedrooms, one bathroom, and a large living area. Ceiling height about 3.5m (11.5 ft) with a slightly sloped green roof at 10°. If I find a simple software, I can try drawing it.
I can well imagine using aerated concrete blocks (porous concrete) for the walls, mainly because I think I could manage that myself. The roof structure would be made of glued laminated timber (glulam), spanning about 7m (23 ft) without support, so sturdy beams will be needed. The advantage is that no load-bearing walls will have to be built. The living area would be completely open without any internal walls. A structural engineer would have to calculate this, but can anyone here make a rough estimation?
I have a few questions about the aerated concrete: as far as I know, it is vapor-permeable. So, if it is clad with wood on the outside and plastered with clay on the inside, would that create a comfortable indoor climate?
Is it possible to achieve a KfW 55 energy standard with corresponding windows? What thickness would be required in that case?
Electric and plumbing installations will be embedded in the walls. Is there anything to consider here since the blocks are thinner—regarding structural stability and thermal insulation?
What would be a rough estimate of the material costs for heating (underfloor heating), water, and electricity installation? Just to get a rough idea…
Thanks a lot,
Bastian
We have been considering building or buying a house for some time now, and we would like to move forward and start planning more concretely. However, I feel overwhelmed by all the information available online—or sometimes not available—and I would like to discuss my idea here with you.
I want to do as much as possible myself, I’m not necessarily unskilled, and currently, I have enough time.
The desired living space would be a bungalow with 2-3 bedrooms, one bathroom, and a large living area. Ceiling height about 3.5m (11.5 ft) with a slightly sloped green roof at 10°. If I find a simple software, I can try drawing it.
I can well imagine using aerated concrete blocks (porous concrete) for the walls, mainly because I think I could manage that myself. The roof structure would be made of glued laminated timber (glulam), spanning about 7m (23 ft) without support, so sturdy beams will be needed. The advantage is that no load-bearing walls will have to be built. The living area would be completely open without any internal walls. A structural engineer would have to calculate this, but can anyone here make a rough estimation?
I have a few questions about the aerated concrete: as far as I know, it is vapor-permeable. So, if it is clad with wood on the outside and plastered with clay on the inside, would that create a comfortable indoor climate?
Is it possible to achieve a KfW 55 energy standard with corresponding windows? What thickness would be required in that case?
Electric and plumbing installations will be embedded in the walls. Is there anything to consider here since the blocks are thinner—regarding structural stability and thermal insulation?
What would be a rough estimate of the material costs for heating (underfloor heating), water, and electricity installation? Just to get a rough idea…
Thanks a lot,
Bastian
C
Caspar202024 Apr 2018 22:07GooSe_77 schrieb:
Ceiling height about 3.5m (11.5 ft) with a slight pitched roof, 10° green roofDo you already have the appropriate plot of land?
GooSe_77 schrieb:
The glued laminated timber roof structure would span about 7m (23 ft) without supportsFlat roof or with a gable?
GooSe_77 schrieb:
What can I roughly estimate as material costs for heating (underfloor heating), water, and electricity? Just a rough guideline…How many square meters are you thinking? 100? 200?
At least your wishes sound rather more expensive than usual.
C
Caspar202024 Apr 2018 22:39So, 2-3 bedrooms and 120 sq.m (1,292 sq.ft) or less, and then a large living area plus circulation spaces and a utility room feels odd. Especially together with a ceiling height of 3.50 m (11.5 ft).
The whole thing with external dimensions of 7.80 m x 15.50 m (25.6 ft x 50.8 ft).
For the glued laminated timber beams, I would say it’s about 90 cm (35 inches) high; although I don’t understand why load-bearing walls should be avoided. In at least half of the bungalow you hardly notice the span at all.
The whole thing with external dimensions of 7.80 m x 15.50 m (25.6 ft x 50.8 ft).
For the glued laminated timber beams, I would say it’s about 90 cm (35 inches) high; although I don’t understand why load-bearing walls should be avoided. In at least half of the bungalow you hardly notice the span at all.
There are a few floor plans that manage to achieve this. We don’t need large bedrooms; for example, the ceiling height is used for loft beds.
90cm (35 inches)? I’ve seen several halls with a span of 7–9 meters (23–30 feet) that manage with 16/32 and a spacing of 3 meters (10 feet)... Of course, they lack insulation and green roofing, but with reduced spacing?
Half of the roof can probably be supported again to save materials there. The living and dining areas have no partition walls.
90cm (35 inches)? I’ve seen several halls with a span of 7–9 meters (23–30 feet) that manage with 16/32 and a spacing of 3 meters (10 feet)... Of course, they lack insulation and green roofing, but with reduced spacing?
Half of the roof can probably be supported again to save materials there. The living and dining areas have no partition walls.
Caspar2020 schrieb:
The whole thing measures 7.80 m x 15.50 m (26 ft x 51 ft) externally. Where did I miss this information?
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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