Luminous room height and window height. Provider standard 262.50 cm

  • Erstellt am 2017-12-07 13:20:35

chrisw81

2017-12-07 13:20:35
  • #1
Hello, we are currently planning a house with a pitched roof (38°) and are still unsure about which ceiling height to choose for the ground floor. The standard at this provider is 262.5 cm shell height / 246 cm clear room height. The floor-to-ceiling windows are 226 cm high. Now we are considering increasing the ground floor height by 12.5 cm or 25 cm. However, we also have a relatively high knee wall of 150 cm (possibly 137.5 cm could also be possible/sensible). Now to the questions:
1) Will the eaves height then be overall too high due to the increased room height and the high knee wall? On the long side we have no windows on the upper floor (currently no strip windows either), meaning it will be a large closed area. Is there a way to loosen this up?
2) Do the windows then also have to be raised or are 226 cm still okay?

Additional info: Our living room (with dining and kitchen) is quite large (approx. 11.5 x 4), therefore we fear that a low ceiling height might feel oppressive, hence the idea of raising it.

Maybe someone has experience with such ceiling heights and can advise..
Thank you!
 

11ant

2017-12-07 14:52:47
  • #2
The ceiling heights should also increase with the heights of the upper edges of the windows, otherwise the ceilings can logically reflect less daylight intensity.

Room heights naturally also affect the eave heights. For knee wall heights, there are two possible limitations, and sometimes both apply simultaneously: by the eave height (absolute) and possibly also relative (measured from the floor of the attic itself).

An all-purpose room with a length-to-width ratio of 2.875:1 will look tunnel-like – but not because of the height.

Room heights must be clarified before working on the floor plan: since they affect the stairs, these require more run length with greater story height.
 

chrisw81

2017-12-07 15:18:27
  • #3
Thank you very much for the response. Possibly, the kitchen in the room can also be separated by a partition wall, then the room would only be 8x4 m, which is probably more common. Unfortunately, the property requires a long instead of a square house (12 x 8 m). The only limitation for the construction is the ridge height - this may be max. 8.5 m, as I was told by the building authority. Interesting point about the daylight intensity. Maybe someone has a house with ~2.7 m ceiling height and how its windows then appear?
 

11ant

2017-12-07 17:32:37
  • #4

It doesn't really become oppressive if you don't raise the top edge of the windows accordingly. Rather, it looks more like thick eyebrows or a hat pulled down over the face. My comment about the height of the lintels is meant like this: Light doesn't only come directly from the sun, but also from the sun shining on the surroundings and then being reflected back. If the lintels provide a higher "threshold" compared to the ceiling, they shade the ceiling in this sense. You can't paint the ceiling whiter than white, and you probably wouldn't want to have it mirrored. So the ceiling reflects less light intensity back into the room. This is clearly measurable, but that doesn't mean it would also cause a significant "darkening" that you would feel.

However, keep in mind with floor-to-ceiling windows that above a frame height of more than 2.40 m, profiles from some manufacturers become significantly more expensive as special custom-made parts. Usually, one won't exceed this dimension even with higher ceiling heights, so just a note to keep "in the back of your mind."
 

Alex85

2017-12-07 17:46:39
  • #5
11ant is to be agreed with. However, it must be considered that a window height of 2.20m with ceiling heights of 2.40m already represents the maximum if a roller shutter is still desired above. In a way, it is complaining at a high level and far from disadvantages in the room.
 

HERR_bau

2017-12-07 19:44:45
  • #6
So we have planned a clear height of 2.8m and windows and doors 2.30 m high. Then, in my opinion, your 2.26 should still fit well...
 

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