West Coast Custom Concrete has captured engineers ... a subway terminal or up to a government building, it’s broken into separate “sets” of stairs on purpose, with landings in between.

Portuguese studio Promontorio has transformed a 1980s office building in Lisbon into a high-tech headquarters featuring a spiralling concrete staircase. The firm, which has offices in Lisbon as ...

A spiral staircase made of concrete rises through the centre of an open-plan office designed by architecture studio Hildebrand in Steinhausen, Switzerland. Winding its way up the building's four ...

Three to four inches of concrete is poured over the subfloor and voila -- you have your porch deck. Steps are created by building a ramp out of wood, then building wooden forms for the steps.