ᐅ Is a staircase required to comply with DIN 18065 or not?

Created on: 16 Nov 2024 01:29
T
Timotheus
Hi,

we are currently in the planning phase for our small wooden house.
Our architect wants to design our staircase according to standard 18065, but this does not match our size preferences.
We want a straight staircase with a length of 250cm (98 inches)... according to the standard, we would have to extend it to at least 290cm (114 inches). The width of 100cm (39 inches) remains unchanged.

Now to our question: Does a staircase in Lower Saxony have to be designed/built according to standard 18065?
In the technical building regulations, I found this paragraph.
Regarding DIN 18065
  • 1.
  • The introduction excludes the application to staircases in residential buildings of building classes 1 and 2 and in apartments.

I could not find a clear answer as to whether I have to comply with the standard.
T
Timotheus
20 Nov 2024 13:15
kbt09 schrieb:

There is missing information regarding the width of the upper floor (UF) .. Is the UF a full storey or an attic with what knee wall height?

Because space-saving and room-friendly stairs are usually planned along exterior walls when considering the house width.

And yes, your last stair landing met the standard dimensions, but the 23.2cm (9 inches) tread depth is really not very practical. As already mentioned here, especially when going down. Measure your foot length.

A few years ago, I created two plans for a narrower house. These examples are only meant as inspiration. In these, the ground floor (GF) has only a small area for incoming external connections; the main technical room is located on the UF. The room layout does not fully match yours but is only meant to give ideas. Both plans have two full storeys. The interior width is only 5m (16 feet 5 inches). It was designed for a family with three children.

Option 1 could also work with a knee wall

[ATTACH alt="1732093048300.png"]88905[/ATTACH] [ATTACH alt="1732093060377.png"]88906[/ATTACH]

Option 2 requires the UF to be a full storey
[ATTACH alt="1732093132420.png"]88907[/ATTACH] [ATTACH alt="1732093144338.png"]88908[/ATTACH]

Thank you for the two suggestions.
The storey height is 295cm (9 feet 8 inches) and the clear room height is 278cm (9 feet 1.5 inches). The knee wall consists of three logs, each 17.5cm (7 inches), so 52.5cm (20.7 inches) in total.
The upper floor extends up to the kitchen. The living area is open to above (void). I hope that is clear.

I find it difficult to find another position for a proper stairwell.
If I want to achieve a 26cm (10 inches) tread depth, the stairs would protrude too far into the living area.
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Timotheus
20 Nov 2024 13:24
FloHB123 schrieb:

Our open staircase to the attic has a tread depth of 230 - 260mm (9 - 10 inches), depending on the step. I would never, ever agree to such a narrow tread depth for the staircase from the ground floor to the upper floor. Two years ago, I had to wear a foot brace for a few weeks. Going up was fine, but I really had to be careful going down. Well, you’ve probably been told this often enough, obviously by the architect and staircase builder as well. In the end, you’ll have to live with it.


We have really taken this to heart. Even we see the potential problems such a staircase can cause. Now we’re looking for a compromise between a comfortable staircase and living space.

Don’t you think a tread depth of 26cm (10 inches) is sufficient?
How would you envision a staircase?
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Timotheus
20 Nov 2024 13:34
Arauki11 schrieb:

Understandably, the repeated mention annoys you, but people also respond because you’re defending this stair component with many arguments, which in turn leads to criticism. Be glad that people are actively engaged in your topic!
On the other hand, this can also highlight how fundamentally important this component is and how extremely disadvantageous it can be to overlook something or perhaps not evaluate things thoroughly enough.
I once worked on a new public building. From the huge entrance area, a 4m wide (13 feet) staircase led up to the first floor (of course complying with standards for public buildings). Many employees did not use this staircase because it was simply too steep and the tread depth too short; after all, there was an elevator.
In short: the standards are important and regulate basic requirements, but there is also the personal standard “DNA” that can make life more comfortable for you in the long run (which is the whole point of building a house). So, while compliance with standards is necessary, their values can and should sometimes be exceeded significantly to achieve the desired result for you.
Keyword “unwanted, repeated redesign”: small residential units in particular require a higher degree of planning skill.

Exactly – I believe this will be exciting – in a positive way!

Yes, you’re absolutely right, of course. I also appreciate tips.
We’re currently trying to include a longer staircase in the floor plan. Unfortunately, we’re finding this quite difficult at the moment.

What angle do you find comfortable? Right now, we’re at 38–39°.
K
kbt09
20 Nov 2024 13:36
Timotheus schrieb:

The knee wall consists of three log beams, each 17.5 cm (7 inches) high... so a total of 52.5 cm (21 inches).
The upper floor extends up to the kitchen.

And what is the roof pitch then? Where would the 2 m (6 ft 7 in) line be located? You really make me extract every bit of info separately. The stairs connecting the ground floor and the upper floor form a single unit, especially considering these floor dimensions.
If you are building with Fullwood, surely you are using one of their standard house models as a base, right? Then just mention the model so people can take a look on their website. Links are not allowed here anyway.

Regarding your drawing in post 62, there is a length of 15.5 m (51 ft) indicated... normally one would assume this refers to the exterior dimension. But you write that the living area measures 12 x 6 m (39 x 20 ft) interior, then there is a wall, then the office with 3.5 m (11 ft 6 in), and then another exterior wall. That would add up to almost 16.5 m (54 ft) exterior dimension somewhere.
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Timotheus
20 Nov 2024 13:47
11ant schrieb:

That looks like a 40-foot container scaled up by a factor of 2.5 in height, or reminds me of a showman’s caravan with a retractable bay window. Were you workation globetrotters?

Glad you noticed. That was exactly our idea. We took a 40-foot container and just made it a bit bigger, added a pitched roof, and that was it. Oh, and to avoid it looking like something from a container port, we built everything out of wood! Our showman’s caravan can even serve as a temporary solution during the construction phase… simply perfect. Who wouldn’t want to spend a year looking out from the bay window of the caravan at the beautiful container?

Jokes aside. Please keep comments like that to yourself in the future. They are simply dismissive and not constructive in any way.
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Schorsch_baut
20 Nov 2024 13:53
I just measured our stairs. The tread depth is 26cm (10 inches) and the rise is 19.5cm (7.7 inches). I wear size 44 shoes and find the stairs comfortable and safe. Our dogs don’t like the stairs, which isn’t necessarily a bad thing.