I am going to cast a staircase similar to the one in the attached image. But how on earth do I construct my mold so that it slopes both to the sides and to the front, so to speak.

Or can you live with a slope only at the front? It still feels tricky to make it look nice at the junction between the side steps and the step in front of the door considering the slope.

Appreciate any input!

Concrete steps leading to a door with potted plants on either side, featuring a modern architectural design.
 
Farstatjej90
If you want falls to the sides as well, it will become a line on the step. In that case, the most attractive option is probably to build it as if you imagine a clipped (in height), very flat and slightly sloping pyramid, so maybe you get the picture in your head.

I think it's damn difficult, to be honest, to make it symmetrical and nice 😅
 
Farstatjej90 Farstatjej90 said:
If you want a slope to the sides as well, there will be a line on the step. The nicest way in that case is probably to construct it as if you envision a cut-off (in height), very shallow and slightly inclined pyramid so maybe you'll get the image in your head.

I think that's damn hard to get symmetrical and nice 😅
Yes, that's how my thoughts are going. It could look pretty professional IF it turns out well 😅 But maybe I'll settle for an outward slope in the end. Feels most realistic.
 
Farstatjej90
It is not impossible but this line between the corner of the lower step and the corner of the upper step must be completely straight, otherwise it looks weird. I think it's a job for someone who has cast a few stairs actually....
 
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S Sargen said:
I am going to cast a staircase similar to the one in the attached picture. But how on earth do I construct my mold so that there is a slope both to the sides and to the front, so to speak.

Or can one live with a slope only at the front? It still feels tricky to get it looking nice in the meeting between the side steps and the step in front of the door considering the slope.

I appreciate all input!

[image]
Is it possible to achieve any slope? You’re not going to cast in the mold and then turn and place the staircase, are you? I don't think you're strong enough 😉

You’re building a mold and casting on site, and then the top is smooth. Since you want a slope both on the top and on the steps, I think you grind it down after casting and thereby create a slight slope?
 
@ @ndreas said:
Is it possible to create any slope? You probably won't be casting in the mold and then turning and placing the staircase, right? I don't think you're strong enough 😉

You would build a form and cast it on-site, and then the top would be smooth. Since you want a slope both on the top and on the steps, I'm thinking you grind it down after casting, thereby creating a slight slope?
Haha! I'm happy if I can lift just the mold 🫣

No, but what I've envisioned is that I close off the mold at the first riser once I've filled it with concrete, so it doesn't spill over when I continue up to step number two. That way, I can cast the entire staircase at once.

But if it's an option to make everything flat and nice, and then grind down to create a slight slope, that undeniably sounds a bit less complicated.
 
S Sargen said:
Haha! I'll be happy if I can just lift the form 🫣

No, but the way I've imagined it is that I close off the form at the first step level when I've filled it with concrete, so that it doesn't overflow when I continue up to step number two. That way, I can cast the entire staircase at once.

But if it's an option to make everything flat and nice, and then grind a little slope, that certainly sounds a bit less complicated.
You can make channels to create slopes to three holes. Quite tricky.
 
Farstatjej90
S Sargen said:
Haha! I'm happy if I can lift just the mold 🫣

No, but as I've envisioned it, I close the mold on the first step when I've filled it with concrete, so it doesn't overflow when I continue up to step number two. That way, I can cast the entire staircase at once.

But if it's an option to make everything level and nice, and then grind out a little slope, that indeed sounds less complicated.
I think it's much, much easier to get a smooth surface and even slope if you do it when you cast. Or plaster on the slope afterward. Grinding out what you describe sounds terribly difficult...
 
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