If you are making a realistic model, keep these standard architectural ratios in mind:
: A simple method involves dividing a rectangular sheet into equal sections and using alternating mountain and valley folds. This is a common origami technique for making decorative ladders or stairs. The Staircase
: Fold a sheet of paper in half. Draw parallel lines perpendicular to the fold and cut them. Push the cut sections forward to create steps that "pop out" when the card opens. You can find detailed steps and templates on DIY.org . If you are making a realistic model, keep
: A standard comfortable step often uses a 7-inch riser and an 11-inch tread . The Staircase