ᐅ Roof design / Mandatory use of the second floor in buildings with two full stories
Created on: 8 Mar 2017 16:29
M
mertmk3
Hello,
Our development plan allows for 2 full stories with a pitched roof at an angle greater than 30°. We are currently considering the best way to utilize this space. We are certain that we want at least a knee wall height of 1.8m (6 feet) on the upper floor, but we are also open to building without a knee wall and having 2.5m (8 feet) ceiling heights instead. Since we are planning a basement, we don’t need to use the entire attic space for storage, which raises the question: What roof pitch and upper floor height make the most sense? Building unnecessarily high doesn’t make sense, nor does having a large unused attic area. Are there examples of how the roof could be designed architecturally to enhance the sense of space? Essentially, an open roof design to create a generous, spacious feeling?
How would you design the roof given the above conditions?
We would appreciate suggestions, preferably with pictures.
Next week we will visit the architect and will of course ask these questions, but having ideas beforehand would be even better.
Best regards
Our development plan allows for 2 full stories with a pitched roof at an angle greater than 30°. We are currently considering the best way to utilize this space. We are certain that we want at least a knee wall height of 1.8m (6 feet) on the upper floor, but we are also open to building without a knee wall and having 2.5m (8 feet) ceiling heights instead. Since we are planning a basement, we don’t need to use the entire attic space for storage, which raises the question: What roof pitch and upper floor height make the most sense? Building unnecessarily high doesn’t make sense, nor does having a large unused attic area. Are there examples of how the roof could be designed architecturally to enhance the sense of space? Essentially, an open roof design to create a generous, spacious feeling?
How would you design the roof given the above conditions?
We would appreciate suggestions, preferably with pictures.
Next week we will visit the architect and will of course ask these questions, but having ideas beforehand would be even better.
Best regards
mertmk3 schrieb:
Yes, the Roman numeral II is enclosed by a circle.Then you also have to build 2 full floors and can forget the idea of an attic with a knee wall of 1.80 m (5 ft 11 in).
Iktinos schrieb:
Then you also have to build 2 full stories and can forget the idea of an attic with a knee wall of 1.80 m (5.9 ft).I see it differently: according to the building code of Baden-Württemberg, the definition of a full story (excerpt) is: "The top two floors are not considered full stories if a height of 2.3 m (7.5 ft) is present on less than three quarters of the floor area of the story below." This means, conversely, if the 2.3 m (7.5 ft) height or more is present on more than three quarters of the floor area of the story below, it counts as a full story. I assume now that the upper floor has the same footprint as the floor below – so I can use its own footprint as the reference area. The area between the knee wall height (in this example 1.8 m (5.9 ft)) and the 2.3 m (7.5 ft) limit must amount to less than a quarter. Starting from a gable roof, a building depth of at least 7 m (23 ft) (measured between the exterior walls) should suffice for this, if I haven’t miscalculated. That should be achievable (?)
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Correct, that is also how a construction company and a building planner explained it to me. With a relatively high knee wall of 1.8m (5 feet 11 inches), which we wanted anyway, a building of the size we are aiming for is considered a full story. This should therefore not be an obstacle.
RobsonMKK schrieb:
A 45-degree roof pitch might possibly conflict with the permitted ridge height.
That would result in an attic with a ceiling height of... I would have to calculate now, but it’s still too early for me (definitely not what the OP wants).There hasn’t been any information about ridge height so far.
But the 1.80 meters (5 ft 11 in) is not fixed either. A roof pitch over 30 degrees is planned, plus two full floors... it should work out 🙂
Best regards in short
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