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.
Adjust the height until the height and steps balance out (since you can't have a half or quarter of a step). Take the number of steps and multiply that by 10.5 inches (266.7 mm). That gives you the length of stair stringer necessary. Take that length and project it out from the deck. Now you have the location for the footing of the stair. 3. Lay out the steps on the stringer, using 2 x 12-inch (50 x 304 mm) treated wood, with a framing square. Set the riser for the height determined by your math and the step by 10 inches (250 mm).