ᐅ Knee wall for raised ground floor and 35° pitched roof

I am currently considering whether we should raise the ground floor ceiling height or not. In general, we like high ceilings. However, we are a bit unsure how much that would affect the upper floor.
The maximum eaves height is 4.5 m (14.8 ft), so we are limited.

Without raising the ground floor ceiling, we would have a knee wall of about 1.28 m (4.2 ft) on one side of the house and about 0.97 m (3.2 ft) on the other side (due to the ridge offset).
With the raised ground floor ceiling, we would have about 1.15 m (3.8 ft) and still 0.97 m (3.2 ft).
All measurements are from the top of the finished floor.
Since the rooms are quite long (about 5.5 m (18 ft)), I am thinking we could simply raise the ground floor ceiling and then reduce the knee wall height artificially using a drywall partition, or later install built-in wardrobes along the roof slope.

The raised ground floor ceiling would increase the clear height from 2.635 m (8.65 ft) to 2.76 m (9.06 ft).

What do you think?

Good evening,

how thick is the finished concrete slab - excluding the surface covering, planned?

Regards, Bauexperte

Hello,
The ground slab (basement) is planned to be 28cm (11 inches) thick with an additional 10cm (4 inches) of XPS insulation underneath.
How would this affect the foundation? The house height won’t increase; only the ground floor ceiling will be shifted. In other words, fewer bricks above and more below. It shouldn’t make a difference in terms of weight, right?

I like quite a lot of things, but that doesn't mean I have to include everything.

What I want to say is: you don't have to have everything you like 😉

Whether a ceiling height increase is desirable or even necessary depends heavily on the floor plan. In some cases, the increase might not even be noticeable. I would also carefully reconsider lowering the knee wall along with it. I wouldn’t want a knee wall height of less than 1.25 meters (4.1 feet) for roof pitches under 30 degrees and room widths of about 3.50 meters (11.5 feet) on the upper floor.

Best regards

@

McEgg schrieb:

What is the connection to that?

Nothing at all; I had no information that you were building with a basement.

So, starting again – what is the planned thickness of the ceiling above the basement, excluding the floor covering?



Regards, Bauexperte
Bauexperte

Hmm, that’s a good question. I’ll need to find out. As far as I understand, this is determined by the structural engineer, who of course also needs to know whether a ground floor elevation is planned or not. I’ll ask and get back to you.