CONSTRUCTION OF A STAIRCASE INSIDE AN OBLIQUE PERSPECTIVE
ENVIRONMENT

1 —	Construct the environment as shown in figure nº 45.
2 —	Locate the staircase and mark its width.
3 —	Mark the depth of the 1st step.
4 —	Mark the height of the 1st step on the edge of 1st magnitude, transferring it by the vanishing point 2 to the measurement line in perspective.
5 —	Construct the 1st step. With two diagonal lines crossing the laterals of the step up to the vertical horizon line, mark the vanishing point of the staircase inclination.
6 —	Construct the staircase as shown in figure nº 45 (next page).