To determine the number of stairs needed to ascend each of the specified heights (10 feet, 12 feet, 8 feet, 9 feet, 6 feet, and 7 feet), you’ll need to consider the riser height for each step, typically falling within the range of 7 to 8 inches (17.78 to 20.32 cm).

However, building codes may vary, so it’s essential to check your local regulations for specific requirements. For the purpose of this calculation, let’s assume a common riser height of 7.5 inches (19.05 cm) per step: For example:- For a 10-foot rise: Number of Steps = 120 inches / 7.5 inches per step, Number of Steps = 16 steps.

The length of stairs depends on the step height (rise) and the depth of each step (run). A common guideline is a 7-inch rise and an 11-inch run for comfortable stairs.

Using a 7-inch riser height, you’d need around 14 steps to ascend 8 feet, around 14 steps to ascend 10 feet, around 21 steps to ascend 12 feet, around 19 steps to ascend 11 feet, around 16 steps to ascend 9 feet, around 12 steps to ascend 7 feet, and around 11 steps to ascend 6 feet.

Staircase design depending on local Building Code guideline in your location. To complete the comfort zone, carpenter and the architect design the staircase or stairs according to code. There is a lot of factors is kept in consideration while designing the staircase such as what will be the the relationship between rise and run ratio, what will be stringer length and what will be landing and ceiling height and how many stairs do you need to go up 10 feet.

Number of stairs depending on the height of a riser to each tread and it will be also affected by pitch of the stair or staircase. Number of stairs or number of riser (step) is same things. Basically all are depending on height of stairs which you will need to go up which all are based on local building Code that says that you need to achieve comfort zone and a relationship between rise and run.

There is a various component of stair or staircase such as step, riser, tread or going, stringer length, waist slab, landing and flight.

Tread is the horizontal top portion of a step where foot rests is known as tread. The size of tread or going or run ranges from 10″ to 11″ for residential buildings. Factories, hospitals and public buildings to 300mm or 12″ where large number of persons use the staircase. In some cases nosing is provided the tread is projected outward to increase the space. Maximum nosing will be in 1 inch.

Riser is the vertical distance between two successive steps is termed as riser. The size of the riser ranges from 150 mm or 6″ for public buildings to 190 mm (7- 1/4″) for residential buildings and factories and maximum about 7-3/4″.

Waist is the thickness of the waist-slab on which steps are made is known as waist. The steps of the staircase resting on waist-slab can be made of bricks or concrete or wood. Going is the horizontal projection between the first and the last riser of an inclined flight. The going should not be less than 250mm or 10″.

Number of stairs steps depending on the height of a riser to each tread and it will be also affected by pitch of the stair or staircase. In this artical you know about how many stairs do you need to go up 10 feet and how do you calculate the number of stairs required for any given height such as 10 feet, 11 feet, 9 feet, 8 feet and 12 feet.

**How many stairs do you need to go up 10′, 12′, 8′, 9′, 6′ & 7 feet**

Usually the Riser (height of step) will be between 7′-1/4″ to 7′-3/4″ and minimum run at least 10″ and maximum to 11″ to 12″. Many carpenter and architect follow the rules to determine comfort rule as rise plus run is equal to 18″ or 2 times rise + run is equal to 25″. To figure the number of stairs you would need to go up 10 feet take the height of one riser 7 inches on average.

Total height from top of 1st floor to top of 2nd floor which is divide by 7 inch to give number of stairs or steps or riser in any particular height of ceiling which you will need to go up.

To figure the number of stairs you would need to go up 10 feet, multiply the height of floor by 12 to convert feet in inches, and then divide the floor height in inches by 7. The result will be your number of stairs you need to go up 10 feet. Number of stairs = (10×12)÷7 = 17.24, round it 18. So, you would need approximately 17 to 18 stairs (steps) to go up 10 feet.

In general, the Length of stairs need to be to go up 10 feet is typically about 180 inches long, while the Length of stairs need to ascend 9 feet is typically about 160 inches long. Likewise, the Length of stairs need to ascend 8 feet is usually about 140 inches long, while the Length of stairs need to ascend 7 feet is usually about 120 inches long. In addition, the Length of stairs need to ascend 11 feet is usually about 190 inches long, while the Length of stairs need to ascend 12 feet is usually about 210 inches long.

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**How many stairs do you need to go up 12 feet**

To go up 12 feet height of ceiling or floor, you would need approximately 20 to 21 stairs. Mathematical calculation: 1) No. of stairs to go up 12 feet height of staircase or ceiling = (12 ×12)÷ 7 = 20.57, round it near to 21.

**How many stairs do you need to go up 10 feet**

As per thumb rule and various building code or IRC, assume standard design, to go up 10 feet height of ceiling or floor, you would need approximately 17 to 18 stairs. Mathematical calculation: 1) No. of stairs to go up 10 feet height of staircase or ceiling = (10 ×12)÷ 7 = 17.14, round it near to 18.

**How many stairs do you need to go up 11 feet**

As per thumb rule and various building code or IRC, assume standard design, to go up 11 feet height of ceiling or floor, you would need approximately 18 to 19 stairs. Mathematical calculation: 1) No. of stairs to go up 11 feet height of staircase or ceiling = (11 ×12)÷ 7 = 18.85, round it near to 19.

**How many stairs do you need to go up 9 feet**

As per thumb rule and various building code or IRC, assume standard design, to go up 9 feet height of ceiling or floor, you would need approximately 15 to 16 stairs. Mathematical calculation: 1) No. of stairs to go up 9 feet height of staircase or ceiling = (9 ×12)÷ 7 = 15.42, round it near to 16.

**How many stairs do you need to go up 8 feet**

As per thumb rule and various building code or IRC, assume standard design, to go up 8 feet height of ceiling or floor, you would need approximately 13 to 14 stairs. Mathematical calculation: 1) No. of stairs to go up 8 feet height of staircase or ceiling = (8 ×12)÷ 7 = 13.7, round it near to 14.

**How many stairs do you need to go up 7 feet**

As per thumb rule and various building code or IRC, assume standard design, to go up 7 feet height of ceiling or floor, you would need approximately 11 to 12 stairs. Mathematical calculation: 1) No. of stairs to go up 7 feet height of staircase or ceiling = (7 ×12)÷ 7 = 12.

**How many stairs do you need to go up 6 feet**

As per thumb rule and various building code or IRC, assume standard design, to go up 6 feet height of ceiling or floor, you would need approximately 10 to 11 stairs. Mathematical calculation: 1) No. of stairs to go up 6 feet height of staircase or ceiling = (6 ×12)÷ 7 = 10.28, round it near to 11.

**How long do stairs need to be to go up 8 feet**

The Length of stairs need to be to go up 8 feet is typically about 140 inches long. To ascend 8-foot ceiling height usually has 14 steps if riser height is 7 inches. Using the minimum tread length of 10 inches, the length of the stairs for an 8-foot ceiling works out to be 140 inches (or 11.66 feet) long.

**How long do stairs need to be to go up 9 feet**

The Length of stairs need to be to go up 9 feet is typically about 160 inches long. To ascend 9-foot ceiling height usually has 16 steps if riser height is 7 inches. Using the minimum tread length of 10 inches, the length of the stairs for a 9-foot ceiling works out to be 160 inches (or 13.33 feet) long.

**How long do stairs need to be to go up 10 feet**

The Length of stairs need to be to go up 10 feet is typically about 180 inches long. To ascend 10-foot ceiling height usually has 18 steps if riser height is 7 inches. Using the minimum tread length of 10 inches, the length of the stairs for a 10-foot ceiling works out to be 180 inches (or 15 feet) long.

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**Conclusion:-**

To go up 10 feet height of ceiling or floor, you would need approximately 17 to 18 stairs for residential building when riser height is 7 inches high on average.