#### How to build interior steps

## What is the formula for building steps?

You divide the height by 7 inches; if, say, the floor-to-floor distance is 8 feet, 10 inches (or 106 inches), then you’ll need 15 treads (106 divided by 7 equals 15.14). Next, you divide the height by the number of treads (15 into 106), producing the exact tread height (7.06 inches).

## How much space is required for staircase?

To comply with the Regulations, the minimum going should be 220mm, whilst the pitch of the staircase should not exceed 42°. There are no restrictions when it comes to width, but standard flights measure 860mm, and for a main staircase it is agreed that a width of between 800mm and 900mm works best.

## How do I calculate a rise?

To calculate percent slope, divide the difference between the elevations of two points by the distance between them, then multiply the quotient by 100. The difference in elevation between points is called the rise .

## How deep is a step?

So, if your steps are 10 inches deep, 8 inches high is the optimum riser height. For oversized steps, the depth should be increased, with the height of each step being reduced. If the tread is 12 inches deep, the riser should be close to 6 inches. The minimum height for any step should be at least 4 inches.

## Are stairs at 45 degrees?

For example, if you were crazy and built a staircase with a 12 inch tread and riser, then the angle of the stringer to the floor would be 45 degrees. A more common angle is about 37 degrees .

## How do you make a slope step by step?

A standard step in the United States is 7 ¾ inches tall. Divide the height of your slope by 7 ¾ inches (or however many inches tall you’ve decided to make the rise of your steps ). If, for instance, your slope is 77.5 inches tall and you plan to build steps of 7 ¾ inches, you will need 10 steps .