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In order to lay out a stairway, one must first calculate the vertical distance from landing to landing* (rise). Then you must calculate the horizontal distance to be traveled to ascend the given rise (run).
A stairway may have differing numbers of steps, but 13 is quite common. So to calculate the rise and run of each step, you would divide the total rise and run by 13. However there are building codes, which differ from region to region, that dictate the limits of each step. These codes are established primarily for safety concerns.
The vertical section of each step, called a riser, does not usually exceed 7-8 inches. This is to accommodate the natural motion and capabilities of a human. The horizontal section of each step, called a tread, is usually at least 9-10" inches deep. This is to account for the size of the average human foot.
* A landing is the level section at the beginning of a stairway, before the bottom step; and also the section at the top of each stairway, above and after the top step. Landings themselves also have codes, and are usually around 3 ft. x 3 ft. in an average residence. The laying out of a stairway can be a very complicated job and is usually left to an architect. But for a simple stairway it can be done by the lay person. A worked example is at `Laying out a Stairs' at http://www.inquirewithin.biz/stairs/laying_out_stairs.htm.
What else can I help you with?
What would be a sentence of stairway?
The stairway was steep. I avoided the dark stairway.
What key is Stairway To Heaven in?
Stairway is in the key of A minor.
What is the french word for stairway?
Staircase / stairway = l'escalier (masc.)
What song is better stairway to heaven or tangerine?
Stairway. No Doubt.
When was On the Broad Stairway created?
On the Broad Stairway was created in 1913.
What is the plural form of the word of stairway?
The plural form of "stairway" is "stairways".
When was Vanlose Stairway created?
Vanlose Stairway was created in 1982-01.
When was The Dark Stairway created?
The Dark Stairway was created in 1938-01.
What is the duration of Stairway to Light?
The duration of Stairway to Light is 600.0 seconds.
What is a riddle with stairway?
How do I get to the second floor? I SAY "WART" I + SAY + WART - STAIRWAY.
When was Stairway to Fairyland created?
Stairway to Fairyland was created on -19-03-01.
When was Stairway to Light created?
Stairway to Light was created on 1945-11-03.
