This project, a private residence in Manhattan, boasts a curved stair that leads up to the living area.
These photos show the extensive formwork that was built to create the stairs.
Notice the white bags of material in the photo below. They were bagged by hand especially for this project, which is clearly unique (a nice way of saying labor intensive).
You may be wondering things like-
How long does that take to build?
How many people work on a project like this?
How does one keep from tripping over the formwork?
Rest assured. We've spent years figuring out how to make things like this happen. It's complicated and messy and exhausting. We love it.