# Length of staircase for 8, 9, 10, 11 & 12 foot ceiling

In this article, we will know about the length of the staircase for 8, 9, 10, 11 & 12-foot ceilings. Because the staircase is a very important component of any building. It is the only way that helps people to access one floor to another floor. Therefore the length of the staircase for 8, 9, 10, 11, & 12-foot ceilings should be of the standard size.

## What is a staircase?

A staircase is a structural component designed to allow people to move between different levels of a building It consists of a series of steps that connects two or more than two landings are very important part of structures such as buildings, bridges, and dams.

There are different types of stairs used in buildings, bridges, and dams, let take a brief look at them the straight stairs are the most common type of stairs. These straight stairs have a series of steps that run in a straight line from one floor to another floor. Most of the stairs are L- L-shaped stairs. These L-shaped stairs have two flights of stairs that turn at a right angle.

U-shaped – these U-shaped stairs have two flights of stairs that turn 180 degrees.

Spiral stairs- spiral stairs have a circular design with steps wrapping around a central axis. Staircases have many components like riser, tread, flight, landing slop, etc. Length of a staircase by the summing up of all treads length or total run in one flight and landing width. The length of the staircase depends on the height of the ceiling, the riser height, and the tread width.

How long is a flight of stairs?

The length of a flight of stairs is calculated by multiplying the number of steps in the flight by the run of each step.

(The run – It is the horizontal distance between the front edges of two consecutive steps)

The average flight of stairs of residential buildings and homes is around 9-10 to 11-12 feet. 12 feet or a bit more is seen in commercial buildings and public buildings.

The total length of a flight of stairs for an 8-foot ceiling is approx 9 feet long.

### How to calculate staircase length?

The calculate the length of a staircase, you will need to know the following:-

1. The number of steps.
2. The run of each step- the run is the horizontal distance between the front edges of two consecutive steps.

Now, to figure out,

First, we divide the ceiling height by the riser height, this gives the number of risers.

• Divide the number of risers by -1
• It gives us a number of treads or, now multiplies the number of treads and treads width.
• It gives us the total run and the total run with landing, resulting into the length of the staircase or the length of a flight of stairs.

### Length of staircase for an 8-foot ceiling.

The total length of a flight of stairs (length of staircase) for an 8-foot ceiling used for a residential home is around 9 feet.

Let’s look at the mathematical calculation.
Number of riser = 8×12/6 = 16

No of the risers in a flight =16/2 = 8

No of tread = 8-1 = 7

Total run = 7×10 = 70”

Therefore staircase length = 70”+42”=112”

Now in feet = (112/12)=9.33

The total length of a flight of stairs of an 8-foot ceiling used for a residential home is around 9 feet in length. Thus standard length of a staircase goes up to 9 feet.

### Length of staircase for a 9-foot ceiling.

The total length of a flight of stairs for 9-foot ceilings used for a residential home is around 10 feet in length.

Let’s look at the mathematical calculation.
Number of riser = 9×12”/6 = 18

No of the riser in 2 flights =18/2 = 9

No of tread = 9-1 = 8

Total run = 8×10 = 80”

Therefore staircase length = 80”+42” = 122”

Now in feet = (122/12) = 10.16 feet

So, the total length of a flight of stairs with a 9-foot ceiling used for a residential home is around 10 feet in length.

### Length of staircase for a 10-foot ceiling.

The total length of a flight of stairs for 10 10-foot ceilings used for a residential home is around 11 feet in length.

Let’s look at the mathematical calculation.

Number of riser = 10×12”/6 = 20

No of a riser in 2 flights = 20/2 = 10

No of tread =10-1 = 9

Total run = 9×10 = 90”

Therefore staircase length = 90”+42” = 132”

Now in feet = (132/12) = 11 feet

So, The total length of a flight of stairs of a 10-foot ceiling used for a residential home is around 11 feet in length.

### Length of staircase for an 11-foot ceiling.

The total length of a flight of stairs for an 11-foot ceiling used for a residential home is around 12 feet in length.

Let’s look at the mathematical calculation.

The number of riser = 11×12”/6 = 22

No of a riser in 2 flights = 22/2 = 11

No of tread = 11-1 = 10

Total run = 10×10 = 100”

Therefore staircase length = 100”+ 42” = 142”

Now in feet = (142/12) = 11.83 feet

So, the total length of a flight of stairs of an 11-foot ceiling used for a residential home is around 12 feet in length.

### Length of staircase for a 12-foot ceiling

The total length of a flight of stairs for 12 12-foot ceiling used for a residential home is around 13 feet in length.

Let’s look at the mathematical calculation.

The number of riser = 12×12”/6 = 24

No of a riser in 2 flights = 24/2 = 12

No of tread = 12-1 = 11

Total run = 11×10 = 110”

Therefore staircase length = 110” + 42” = 152”

Now in feet = (142/12) = 11.83 feet

Hence, the total length of a flight of stairs of a 12-foot ceiling used for a residential home is around 13 feet in length.

## Conclusion

We have calculated and now we know the exact length of a flight of stairs for a 10-foot ceiling, 11-foot ceiling, and 12-foot ceiling used in residential homes. For an 8-foot ceiling, the length of flight is around 9 feet in length.