## How Long Is a Standard Staircase?

The width of the stairs is their length which is measured from side to side. On the basis of the situation and the purpose, the width of the stairs is fixed.

On the concept that two persons in a stair can cross each other the minimum width of the stair is decided by one.

For public buildings the regular traffic moving is more by using the staircase so for that case the width of the staircase will be more and for residential buildings the width can be provided up to the minimum limit.

For the case of residential buildings, the minimum width can be kept at 900 mm and for public buildings, the minimum width can be kept between a range of 1.37 mm to 1.5 mm.

The maximum width for both cases should not exceed 180 mm.

On the availability of your space and budget, the length can be adjusted just one thing is to be best assured that the minimum dimension is maintained.

## How Long Do Stairs Need to Be?

According to IRC, the length of stairs needs to be kept at least 36 inches this is the minimum dimension.

You can extend this dimension but should not be less than this dimension.

The length of a staircase or the length of a flight will be equal to the sum of all treads available or in one flight the total run along with the width of the landing.

The length of the staircase will vary on the ceiling height, height of the riser, and width of the tread.

Also Read: All About Vaulted Ceilings | What Is a Vaulted Ceiling | Different Kinds of Vaulted Ceilings

## How Long Is a Flight of Stairs?

A set of steps between the two floors or the two landings is known as a flight of stairs.

Flight of stairs can also be known as stairwells or stairways.

Between the floor and landing the continuous series of steps is the flight.

A flight must not have less than 3 risers and must not exceed 15 risers.

7 inches is the standard height of a stair step so a flight of stairs that will be connecting two floors having a floor height of 8 feet normally must have 11 steps.

For most of the homes, the flight of stairs length is kept between a range of 9 to 12 feet.

To find the perfect length of flight of stairs on each floor for your building you have to first measure the height available for each floor of your building, then divide the height of one stair by the height of each floor.

Then count the number of flights of stairs, then multiply the number of flights by the number of stairs available per flight.

The tread depth of the stair is varied generally but the riser height is generally constant. 10 inches will be the lowest tread depth a nosing of a minimum of ¾ inches and not more than 1 & ½ inches should be provided.

For computing the length of a flight of stairs will involve the depth of your tread and the length of the nosing.

On various factors, The length of a flight of stairs depends on the factors that will involve a number of steps and the height of each step along with the width of the stairs.

For calculating the length of flight of stairs the formula c2 = a2 + b2 can be used.

**Useful Article For You**

- How Much Does a Gallon of Milk Weigh
- How Much Does a Yard of Dirt Weigh
- How Much Does a Yard of Concrete Weigh
- How Much Does a Yard of Gravel Weigh
- How Much Does It Cost to Pump a Septic Tank
- How Much Concrete Per Fence Post
- How Many Yards of Concrete in a Truck
- How Much Does 55 Gallons of Water Weigh
- How Much Is a Bag of Concrete
- How Many 80lb Bags of Concrete in a Yard
- How to Remove Texture from Walls
- How to Check Septic Tank Is Full
- How Big Is a Septic Tank
- How to Locate Septic Tank
- How Big Are Septic Tanks
- How Often Septic Pumped
- How Much Does It Cost to Empty Septic Tank
- How Much Does It Cost to Have Septic Tank Pumped
- How Much Room Do You Need for a Pool Table

## How Big Is a Flight of Stairs?

In a place where 8 feet ceilings are available 8 feet 8 inches or around 9 inches of flight of stairs are to be provided.

To compute how big the flight of stairs is you have to take the ceiling height and add the joist width which will be framing the ground and the height of the stairs will be terminating there.

Its dimensions will be around 8 inches to 12 inches.

After that add ½ inches to ¾ inches to the thickness of the subfloor.

Also Read: All About Rim Joist | What Is a Rim Joist | What Are Rim Joists For | Rim Joist Size and Materials

## How Many Stairs Can You Have Before a Landing?

It is not always the same for the number of stairs before landing. It will depend on the staircase type, the building type, and the landing site.

Residential buildings will have fewer stairs before landing as compared to those made for commercial buildings.

Before landing a staircase made for the residential building will have 12 to 16 stairs before landing depending on the number of floors the building has.

For a commercial building staircase before landing the number of stairs will be 18 to 20 stairs before the landing.

This is so since, for commercial buildings the landing size will be larger and you will need to accommodate more people.

Those staircases that are used in public such as malls, schools, and museums will have different numbers of stairs before landing.

The reason for this is to accommodate more people and the landing’s size.

24 stairs will be there before landing in a school or mall whereas in a museum 32 stairs will be there before the landing.

The number of stairs before landing is also affected by the design of the staircase type.

Like for example a spiral staircase will have four stairs before the landing as the staircase will be wrapped around the circle.

## How Long Are Stairs for 12 Foot Ceiling?

Stairs need to be 13 feet long for a ceiling of 12 feet.

If you calculate then first find the number of risers which is done by 12 multiplied by 12’’ then the result is divided by 6” which gives 24.

Then find the number of risers in the flight which is the number of risers divided by 2 which will be 24 / 2 = 12.

Then the number of treads will be 12 minus 1 which will be 11. Now, the total run will be 11 * 10” = 110”.

Now the length of the staircase will be 110” + 42” i.e., 152” or 13’.

21 stairs will be required for a building having a ceiling height of 12 feet, the number of treads in it will be 20 numbers and 14 feet will be the average stringer length for going up.

## How Long Are Stairs for 11 Foot Ceiling?

Stairs need to be 12 feet long for a ceiling of 11 feet.

If you calculate then first find the number of risers which is done by 11 multiplied by 12’’ then the result is divided by 6” which gives 22.

Then find the number of risers in the flight which is the number of risers divided by 2 which will be 22 / 2 = 11.

The number of treads will be 11 minus 1 which will be 10. Now, the total run will be 10 * 10” = 100”.

Now the length of the staircase will be 100” + 42” i.e., 142” or 12’.

19 stairs will be required for a building having a ceiling height of 11 feet, the number of treads in it will be 18 numbers and 13 feet will be the average stringer length for going up.

## How Long Are Stairs for 10 Foot Ceiling?

Stairs need to be 11 feet long for a ceiling of 10 feet.

If you calculate then first find the number of risers which is done by 10 multiplied by 12’’ then the result is divided by 6” which gives 20.

Then find the number of risers in the flight which is the number of risers divided by 2 which will be 20 / 2 = 10.

The number of treads will be 10 minus 1 which will be 9. Now, the total run will be 9 * 10” = 90”.

Now the length of the staircase will be 90” + 42” i.e., 132” or 11’.

17 stairs will be required for a building having a ceiling height of 10 feet, the number of treads in it will be 16 numbers and 12 feet will be the average stringer length for going up.

**Useful Article For You**

- Prefab Homes Under 20k
- Sunroom Ideas on a Budget
- How Many Cinder Blocks on a Pallet
- Drip Septic System
- Mound Septic System Cost
- How to Choose Roof Color for Red Brick House
- How Much Weight Can a Cinder Block Hold
- How Much Does Oil Weigh Per Gallon
- When to Remove Forms from Quikrete
- Do Garages Count as Square Footage
- Door Colors for Blue House
- How Thick Concrete Sidewalk
- Paint for Concrete Steps
- Quikrete Water Ratio
- Red Brick Patio
- Septic Tank Pump Replacement
- Bifold Closet Door Rough Opening
- Sawzall Is Another Term Commonly Applied To

## How Long Are Stairs for 8 Foot Ceiling?

Stairs need to be 9 feet long for a ceiling of 8 feet.

If you calculate then first find the number of risers which is done by 8 multiplied by 12’’ then the result is divided by 6” which gives 16.

Then find the number of risers in the flight which is the number of risers divided by 2 which will be 16 / 2 = 8.

The number of treads will be 8 minus 1 which will be 7. Now, the total run will be 7 * 10” = 70”.

Now the length of the staircase will be 70” + 42” i.e., 112” or 9’. 14 stairs will be required for a building having a ceiling height of 8 feet, the number of treads in it will be 13 numbers and 10 feet will be the average stringer length for going up.

Also Read: Places Where to Find Free Building Materials

## How Long Are Stairs for 9 Foot Ceiling?

Stairs need to be 10 feet long for a ceiling of 9 feet.

If you calculate then first find the number of risers which is done by 9 multiplied by 12’’ then the result is divided by 6” which gives 18.

Then find the number of risers in the flight which is the number of risers divided by 2 which will be 18 / 2 = 9.

The number of treads will be 9 minus 1 which will be 8. Now, the total run will be 8 * 10” = 80”.

Now the length of the staircase will be 80” + 42” i.e., 122” or 10’.

15 stairs will be required for a building having a ceiling height of 9 feet, the number of treads in it will be 14 numbers and 11 feet will be the average stringer length for going up.

## Length of Staircase for 10 Foot Ceiling

You will be requiring an 11-foot-long stair with a ceiling of height 10 feet.

For a residential building having a ceiling height of 10 feet the approximate length of flight of stairs will be 11 feet in total.

For a 10 feet ceiling this is the maintained standard length.

## Length of Staircase for 8 Foot Ceiling

You will be requiring a 9-foot-long stair for a ceiling of height 8 feet.

For a residential building having a ceiling height of 8 feet the approximate length of flight of stairs will be 9 feet in total.

For an 8 feet ceiling this is the maintained standard length.

## Length of Staircase for 9 Foot Ceiling

You will be requiring a 10-foot-long stair for a ceiling of height 9 feet.

For a residential building having a ceiling height of 9 feet the approximate length of flight of stairs will be 10 feet in total.

For a 9 feet ceiling this is the maintained standard length.

## Length of Staircase for 12 Foot Ceiling

You will be requiring a 13-foot-long stair with a ceiling of height 12 feet.

For a residential building having a ceiling height of 12 feet the approximate length of flight of stairs will be 13 feet in total.

For a 12 feet ceiling this is the maintained standard length.

## How Long of a 2 X 12 Do I Need for Stairs?

A length of 10.5” is used for 2 x 12 treads the boards used should be straight and of high quality.

A 2 x 12 stringer will have 6 feet of unsupported length.

These 2 x 12 boards are used for stringers and treads. The stringer length is used for determining the length of 2 x 12 materials that will be required for building the stair stringer

## How Many Feet in a Flight of Stairs?

8-1/2 to 11 feet is the vertical height of a flight of stairs.

The ceiling height along with the ceiling drywall’s thickness plus the upstairs floor joists depth and the upstairs flooring materials’ thickness are all included in the total height.

This is so done because the stairs will go from the downstairs floor to the upstairs flooring.

Like, if one has a ceiling height of 8 feet then the vertical height of the flight of stairs will be 9 feet.

The total run of a flight of stairs will be greatly varying since the depth of the tread is mutative as compared to step height. In order to fit a horizontal space contractor, make adjustments to the tread depth.

Generally average minimum tread depth is kept at 0.83 feet which is generally 5 feet in for the total run.

## How to Calculate Staircase Length?

To calculate the staircase length you need to first divide the height of the ceiling by the height of the riser which will give you the number of risers.

Now you will have to divide the number of risers by 2 in order to receive the number of risers in a flight.

Now subtract the number of risers by 1 which will give you the number of tread or going in a flight.

After that multiply the number of treads and tread width which will give you the total run then add the total run along with the landing width which will give you the staircase length or length of the flight of stairs.

Like if an example is taken for finding the length of a staircase with a ceiling of 10 feet.

At first number of risers will be 10 x 12” / 6” which will be 20.

Then the number of risers in a flight will be 20 / 2 which is 10.

Now, the number of treads will be 10 – 1 which is 9.

Now, the total run will be 9 x 10” which is 90”.

Now, the staircase length will be 90” + 42” which will be 132” or nearly 11’.

## Average Length of a Staircase; Average Length of Stairs

According to the International Residential Code and other available local building codes, the average length of a staircase is around 3 feet or 36 inches.

Handrails will not be included in this.

If you fulfill this minimum dimension requirement you can make adjustments to your length according to the available space.

## Length of Stairs for 10 Foot Ceiling

You need to provide stairs of length 11 feet for a ceiling of 10 feet.

It is used for residential buildings and kept as a standard length.

## Length of Stairs for 8 Foot Ceiling

You need to provide stairs of length 9 feet for a ceiling of 8 feet.

It is used for residential buildings and kept as a standard length.

## How Long Are Stairs for 8-Foot Ceiling?

For stairs with 8-foot ceilings, the length of the stairs will be 9 feet.

This length is a standard length for going up to an 8-foot ceiling.

## Length of Stairs for 9 Foot Ceiling

You need to provide stairs of length 10 feet for a ceiling of 9 feet.

It is used for residential buildings and kept as a standard length.

## Length of Stairs for 12 Foot Ceiling

You need to provide stairs of length 13 feet for a ceiling of 12 feet.

It is used for residential buildings and kept as a standard length.

## Length of Stairs for 11 Foot Ceiling

You need to provide stairs of length 12 feet for a ceiling of 11 feet.

It is used for residential buildings and kept as a standard length.

### How Long Is a Standard Staircase?

A 9-foot ceiling building typically has between 14 to 16 steps in a flight of stairs. Using the minimum tread length of 10 inches, the length of the staircase for a 9-foot ceiling works out to between **140 inches (3556 mm) to 160 inches (4064 mm).**

### How Long Do Stairs Need to Be?

The 2018 IBC building code for rise and run of stairs is a maximum 7″ rise and minimum 11″ run (tread depth). The OSHA standard for rise and run of stairs is maximum 9.5″ rise and minimum 9.5″ run (tread depth).

### How Long Is a Flight of Stairs?

A typical flight of stairs has 13 to 16 steps. The average length (vertical height) of a flight is **8 1/2 to 11 feet**. Your local building codes impact the number of steps and other dimensions.

### How Big Is a Flight of Stairs?

Highlights. A typical flight of stairs has **13 to 16 steps**. The average length (vertical height) of a flight is 8 1/2 to 11 feet. Your local building codes impact the number of steps and other dimensions.

### How Many Stairs Can You Have Before a Landing?

For general access stairs a maximum allowance of **12 steps** before a landing is required. With utility stairs, a maximum of 16 steps is allowed before a landing.

### How Long Are Stairs for 10 Foot Ceiling?

Length of staircase or the length of a flight of stairs is between 9 to 12 feet long, for 10 foot ceiling it will be **11 feet**, for 8 foot – 9 feet, 9- foot – 10 feet, 11-foot – 12 feet & for 12-foot it will be 13 feet.

### How Long Are Stairs for 8 Foot Ceiling?

Length of Staircase for 8-Foot Ceiling

As explained in a previous section, an 8-foot ceiling usually has **13 or 14 steps**. Using the minimum tread length of 10 inches, the length of the staircase for an 8-foot ceiling works out to 130 inches (3302 mm) or 140 inches (3556 mm).

### How Long Are Stairs for 9 Foot Ceiling?

Length of Staircase for 9-Foot Ceiling

A 9-foot ceiling building typically has between **14 to 16 steps** in a flight of stairs. Using the minimum tread length of 10 inches, the length of the staircase for a 9-foot ceiling works out to between 140 inches (3556 mm) to 160 inches (4064 mm).

### Length of Staircase for 10 Foot Ceiling

For a 10-foot ceiling, a staircase with around 14 to 16 steps is generally suitable.

### Length of Staircase for 8 Foot Ceiling

For an 8-foot ceiling, a staircase with around **12 to 13 steps** is typically appropriate.

### Length of Staircase for 9 Foot Ceiling

For a 9-foot ceiling, a staircase with around **13 to 15 steps** is generally suitable.

### Length of Staircase for 12 Foot Ceiling

For a 12-foot ceiling, a staircase with around **16 to 18 steps** is typically appropriate.

### How Many Feet in a Flight of Stairs?

The length of a flight of stairs depends on the number of steps and the height of each step. On average, a flight of stairs can be around 10 steps, which would be about 5 to 6 feet in length.

### How to Calculate Staircase Length?

The total run refers to how long your overall staircase will be. To determine the overall run, **multiply the step run by the planned number of steps in your staircase**. If your staircase will have 6 steps and your run is 10 inches (25 cm), for example, the total run is 60 inches (150 cm).

### Length of Stairs for 10 Foot Ceiling

For a 10-foot ceiling, the length of a staircase depends on factors such as the design, step dimensions, and local building codes. Generally, a staircase with around **14 to 16 steps** would be appropriate for a 10-foot ceiling.

### Length of Stairs for 8 Foot Ceiling

For an 8-foot ceiling, the length of a staircase can vary based on design, step dimensions, and regulations. Typically, a staircase with around **12 to 13 steps** would be suitable for an 8-foot ceiling.

### Length of Stairs for 9 Foot Ceiling

Length of staircase for 8, 9, 10, 11 & 12 foot ceiling – Civil Sir. Length of staircase or the length of a flight of stairs is between 9 to 12 feet long, for 10 foot ceiling it will be 11 feet, for 8 foot – 9 feet, 9- foot – 10 feet, 11-foot – 12 feet & for 12-foot it will be 13 feet.

### Length of Stairs for 12 Foot Ceiling

For a 12-foot ceiling, the length of a staircase depends on factors like design and step dimensions. Generally, a staircase with around 16 to 18 steps would be appropriate for a 12-foot ceiling.

### Length of Staircase for 11 Foot Ceiling

For an 11-foot ceiling, the length of a staircase can vary based on design, step dimensions, and regulations. As a general guideline, a staircase with around 15 to 17 steps would be suitable for an 11-foot ceiling.

**Like this post? Share it with your friends!**

**Suggested Read –**

## Leave a Reply