I'm renovating the hallway and planning to install a basement staircase. There was a hole for a straight staircase, but now I've bought a used U-shaped staircase that I plan to install in a new location. It will be a while before this is done, but I'm working on sketching floor plans and hallway furnishings, and the placement needs to be determined as soon as possible.
I have the dimensions, but I'm curious about how big a hole needs to be made in the floor to fit it, something I hope someone here can answer.
Height: 2530mm
Width: 900mm
Measurement A: 1650mm
Measurement B: 2030mm
Measurement C: 1680mm
I have the dimensions, but I'm curious about how big a hole needs to be made in the floor to fit it, something I hope someone here can answer.
Height: 2530mm
Width: 900mm
Measurement A: 1650mm
Measurement B: 2030mm
Measurement C: 1680mm
Sounds unnecessarily large. Halfway down the stairs the hallway becomes irrelevant, so it's not reasonable for the entire width of the stairs to need a hole in the hallway.Immobil said:1680 x 2030 is my spontaneous answer.
30cm something.
To meet the clearance height on the first flight, you can create a notch on the floor opening. This gives you an additional 110 mm of flooring on the first level, see attached drawing. In return, you have to angle the railing on the floor. :wow:
So my first suggestion wasn't so bad after all.
So my first suggestion wasn't so bad after all.
Then I would still need an L-stair, as the width here is only 125cm...
Hello,
According to http://www.atab-trappan.se/index.cfm?id=72&l=2 the space should be the same size as the staircase. However, I agree that the head should be in the hallway quite a bit up the staircase.
According to http://www.atab-trappan.se/index.cfm?id=72&l=2 the space should be the same size as the staircase. However, I agree that the head should be in the hallway quite a bit up the staircase.
I think I understand what you mean, but I don't think it will work well. Your proposal seems to imply that the edge of the floor opening ends up above the third step from the bottom. I have calculated it, and if we assume that the ceiling height in your basement is somewhere between 210 and 240 cm, that the floor structure including the basement's ceiling covering and the entrance level's floor covering is 25-30 cm thick, and that the stairs distribute this fall height evenly over all steps, then the headroom when standing on this step is somewhere between 160 and 183 cm. The headroom here probably needs to be a couple of decimeters greater than a person of average height so that they don't feel the need to lean backward when going down the stairs.
If the stairs also need to be usable for carrying down, for example, furniture to the basement, even more headroom is required since stairs of this type and width usually require that long objects be tilted more or less upright to get around the curve.
I think the floor opening must be approximately as Immobil has drawn. Possibly, if the basement's ceiling height goes up to 230-240 cm, the edge of the opening can be pulled in a decimeter or two above the lowest step.
If the stairs also need to be usable for carrying down, for example, furniture to the basement, even more headroom is required since stairs of this type and width usually require that long objects be tilted more or less upright to get around the curve.
I think the floor opening must be approximately as Immobil has drawn. Possibly, if the basement's ceiling height goes up to 230-240 cm, the edge of the opening can be pulled in a decimeter or two above the lowest step.