Although the U.S. Bureau of Labor Statistics (BLS) does not provide information specific to the field of global marketing, the BLS did project that the employment of marketing managers will likely grow by about 12% between 2012 and 2022, a rate consistent with the average predicted for all occupations.
Divide the height of the staircase in inches by the intended rise of each step, also in inches, to assist in determining the stair stringer length. The riser height is up to you, though most building codes will not allow a height larger than 7 3/4 inches.
Draw a line to connect all the points on the stair stringers. Note that this is parallel to the nose line of the finished stairs, but is not the same as the nose line. Make another line parallel to the first line, 11.25 inches apart. This denotes the width of a 2x12, the standard material used for stair stringers.