It must be between 4 to 8 inches tall according to the 2010 california building code.
Staircase for 8 foot ceiling.
3800 square foot home with flared stairs coffered ceilings 8 stair calculator stair calculator calculate rise and run chapter v stair building stairs calculator whats people lookup in this blog.
Stair width is measured from edge to edge of each side of the tread perpendicular to tread length.
To calculate the run of the stairs simply multiply the tread dimension ensure this doesn t include the nose see below by the number of steps.
The unit rise height is how tall you want your stairs.
A staircase takes up a lot of room on both the lower and upper floors requiring careful consideration of the location.
While measurements of length are conventionally longer than those of width when considering rectangles in the case of steps the width is usually.
Building codes generally suggest at least 6 ft.
Plan a typical staircase for a house with an 8 foot ceiling at 3 feet wide.
The result is the number of risers required.
The maximum permitted height of a riser is usually 8 1 4 inches so divide the total rise of the stairs by 8 1 4 and round up to the next whole number.
Once again this is not equally divisible by 7 5 but it yields 16 risers.
Rounded up that becomes 15.
To calculate the rise of the stairs multiply the rise dimension by the number of steps.
If you have nine foot high walls on the first floor your total height is 119 and 1 8 inches.
8 inches 203 2 cm of stair headroom.
Multiply the 15 needed treads by 10 inches and you get 150 inches or 12 feet 6 inches.
Or to work out how many steps you need take your ceiling height and divide by let s say 16 to start with.