Stair area 3.04m x 2.25m - 15 or 16 steps

That is a good hint.

My staircase builder, for example, offers the following floor plans for landing stairs. The floor height for these stairs is between 270cm and 280cm.

Perhaps the one in the middle would also be a good choice.

My God, don't you understand, according to the somewhat pathetic drawing your floor height is 298 cm. You can't take such a standard drawing as a basis.

The building stands, the stairwell is there, so your stair seller now has to send a specialist for measuring the existing infrastructure and then make a proper stair offer.

This is just dithering here, as if such a staircase could be "standard" quickly.

And earlier you hinted that the podium wasn’t really important to you, and now you’re coming back with podium steps. And yes, exactly, you’re missing at least one step there, if not even two. One more addition to my speculation regarding the structural builder and accuracy. If you have to order the concrete staircase from your structural builder/ general contractor, I would all the more take a wooden staircase from the stair builder. Is he at least experienced with your general contractor? I mean, does your general contractor commission him more often? Because then he knows how to handle it.

What do you want with the standard drawings. You need a customized staircase! For everything else, you should have taken care of it during the planning phase.

My God, don’t you understand, your floor height is 298 cm according to the somewhat pathetic drawing. You really can’t take such a standard drawing as a basis.

I was only trying to say that in the second option there is no complete landing. I do know that our floor height is well above 270 to 280 cm. I see a floor height of 292 cm.

And earlier you hinted that the landing isn’t really important to you, and now here you come again with landing stairs. And yes exactly, you’re missing at least one step, if not two.
One more addition to my speculation regarding the shell builder and accuracy. If you have to order the concrete stairs from your shell builder/general contractor, I would all the more get a wooden staircase from the stair builder.
Is he at least experienced with your general contractor? I mean, does your general contractor commission him often? Because then he knows how to handle it.

As I said above, it was about not having a complete landing. You went a step further and talked about a spiral staircase completely without a landing. It will definitely be a wooden staircase. Yes, the stair builder is regularly commissioned through my general contractor.

Hello,

would you seriously make yourself happy in the long term with a growth resulting from a combination of a landing and a warped step?
I’ve had to construct all sorts of curious things, but I would never have thought of something like that. You never stop learning...
Fortunately, that never happens in our industry.

Skip the landing and go for 16 or 17 risers in a half-turn staircase. Everything else is, in my opinion, rubbish.
The advantage is that even with a 30 cm tread, the length comes out to under 3.00 m. You can still turn and twist the running direction however you want.

Just asking plainly: where does the stair builder get his measurements for fabrication, if not from himself?