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Very simple to explain, very dificult to get right. Here is my best shot. The 2006 International Building Code states the following: R311.5.3 Stair treads and risers.
R311.5.3.1 Riser height.
The maximum riser height shall be 7¾ inches (196 mm). The riser shall be measured vertically between leading edges of the adjacent treads. The greatest riser height within any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm).
R311.5.3.2 Tread depth.
The minimum tread depth shall be 10 inches (254 mm). The tread depth shall be measured horizontally between the vertical planes of the foremost projection of adjacent treads and at a right angle to the tread's leading edge. The greatest tread depth within any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm). Winder treads shall have a minimum tread depth of 10 inches (254 mm) measured as above at a point 12 inches (305 mm) from the side where the treads are narrower. Winder treads shall have a minimum tread depth of 6 inches (152 mm) at any point. Within any flight of stairs, the largest winder tread depth at the 12 inch (305 mm) walk line shall not exceed the smallest by more than 3/8 inch (9.5 mm). So taken that a flight of stairs is the measurement of floor to floor, or approximately 9ft use the following to find the rise and run: Floor to Floor Dimention divided by number of risers that will give you an answer somewhere between 4 inches and 7 3/4 inches. Some trial and error is needed here to get an even number that you can work with. 9ft/15 = 7.2 inches for riser height. Run is equal to the depth of each tread plus any landings. 15*10 = 150 inches or 12.5ft long. The with is described in the IRC as follows: R311.5.1 Width.
Stairways shall not be less than 36 inches (914 mm) in clear width at all points above the permitted handrail height and below the required headroom height. Handrails shall not project more than 4.5 inches (114 mm) on either side of the stairway and the minimum clear width of the stairway at and below the handrail height, including treads and landings, shall not be less than 31.5 inches (787 mm) where a handrail is installed on one side and 27 inches (698 mm) where handrails are provided on both sides. Hope this helps!
Terry
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Is a fleet of stairs correct?
NO. Use "flight of stairs"
How many steps make a flight of stairs?
A flight of stairs is an uninterrupted set of steps. The answer could be the same or different for any given flight of stairs! A flight of stairs is an uninterrupted set of steps. The answer could be the same or different for any given flight of stairs!
A group of stairs?
A group of stairs is referred to as a flight. Example in a sentence- I followed him up a flight of stairs.
What is a group of stair called?
Flight of stairs and Fleet of ships.
What is a pair of stairs?
A pair of stairs is another term for a flight of stairs.
How many stairs?
Usually 16-20 is the average flight of stairs.
What is the collective noun of steps or stairs?
There are several synonyms for the phrase "next steps" You could use the phrase "advance to the following directions" as an alternative.
What is the homophone for flight of stairs and to look fixedly?
The homophone for "flight of stairs" is "flite of stares." The homophone for "to look fixedly" is "stare."
How many flights of stairs are equal to 5760 stairs?
A "flight" of stairs may consist of differing numbers of steps. It depends on the architect, the engineer and/or the contractor and what there is to work with. We sometimes refer to a flight of stairs as the group of steps between two adjoining levels in a structure, but this is not set in stone. And a given flight of stairs between that pair of adjacent levels can be "broken" into two or more "sub-flights" depending on the area and geometry of the stairwell. There is probably a maximum number of stairs that will be set on a stringer, and a long, straight stringer may have a landing (one or more) to break it up for the benefit of the individuals who ascend or descend using this route. Consider the stairs on some of the ancient structures in South America. Hundreds of steps straight up with no breaks makes for a difficult climb, whether it be up or down.
How many feet in a flight of stairs?
It takes about 20 flights of stairs to equal a mile.
What is the length in miles of 12 flights of stairs?
Depends on the definition of "flight" as in how many steps in each flight of stairs ... Please be more specific.
Is this correct - a long gaggle of stairs?
No, a long flight of stairs a noisy gaggle of geese
