Length of staircase for 8, 9, 10, 11 & 12 foot ceiling | Length of staircase for an 8 foot ceiling | How big is a staircase for 10 foot ceiling | Length of staircase for a 12 foot ceiling.

Staircase is most important part of building such as residential, commercial, factories, public, hospital and etc. It helps people to comfortably access different floor of a building. When you are thinking about your new task designing and construction of staircase, length of staircase, total run, ceiling height, size of rise & run or tread is important factors that ensure good design and it make comfortable flight between one floor to another.

Staircase may be straight, L shaped, U shaped, spirally curved cantilever split and winder shape. Stair may be in a straight run leading from one floor to another without turn or change in direction, it may change direction to flight connected at 90-degree angle landing and in a multistorey or high rise building its turn 180-degree angle.

Staircase have many component like riser, tread, flight, landing, slop etc. Tread is horizontal part of staircase on which we first apply foot on this for moving from ground floor to upper floor. The tread depth is measured from the back of one tread the back of next and their width is measured from one side to other. Riser is the vertical portion between each tread on the stair, it may be missing in open stair, riser height measured from bottom of each tread to next upper tread, or riser height may also called vertical distance between two tread.

Length of staircase or length of a flight of stairs is equal to sum of all tread length or total run in one flight and landing width. Generally length of staircase depending on height of ceiling, riser height & tread width. For most homes, staircase consist of two flight and one landing, generally the length of a flight of stairs is between 9 to 12 feet long. Many code suggest that riser height is about 6″ high, tread width is about 10″ and landing width is about 42″ or 3.5 feet.

**How to calculate staircase length**

To figure out staircase length, first divide the ceiling height by riser height, resulting give us number of riser, divide the no. of riser by 2 to get number of riser in a flight, no. of riser _ 1 give us number of tread or going in a flight, multiplication of number of tread and tread width give us total run and add the total run with landing width that result length of staircase or length of a flight of stairs.

**For example:- length of staircase for a 10 foot ceiling**

1) no. of riser = 10×12″÷6″ = 20

2) no. of riser in a flight = 20÷2=10

3) no of tread = 10_1 = 9

4) total run = 9×10″ = 90″

5) staircase length = 90″ + 42″ = 132″ or 11′

**Length of staircase for a 8 foot ceiling**:- in most homes or residential building, length of staircase or the total length of a flight of stairs for an 8-foot ceiling is approximately 9 feet long. Mathematics calculation such as :- 1) no. of riser = 8 × 12″÷ 6″ = 16, 2) no. of riser in a flight = 16÷ 2 = 8, 3) no of tread = 8_1 = 7, 4) total run = 7×10″ = 70″ & 5) staircase length = 70″ + 42″ = 112″ or 9.33′.

**Length of staircase for a 9 foot ceiling**:- in most homes or residential building, length of staircase or the total length of a flight of stairs for an 9-foot ceiling is approximately 10 feet long. Mathematics calculation such as :- 1) no. of riser = 9 × 12″÷ 6″ = 18, 2) no. of riser in a flight = 18÷ 2 = 9, 3) no of tread = 9_1 = 8, 4) total run = 8×10″ = 80″ & 5) staircase length = 80″ + 42″ = 122″ or 10.16′.

**Length of staircase for a 10 foot ceiling**:- in most homes or residential building, length of staircase or the total length of a flight of stairs for an 10-foot ceiling is approximately 11 feet long. Mathematics calculation such as :- 1) no. of riser = 10 × 12″÷ 6″ = 20, 2) no. of riser in a flight = 20÷ 2 = 10, 3) no of tread = 10_1 = 9, 4) total run = 9×10″ = 90″ & 5) staircase length = 90″ + 42″ = 132″ or 11′.

**Length of staircase for a 11 foot ceiling**:- in most homes or residential building, length of staircase or the total length of a flight of stairs for an 11-foot ceiling is approximately 12 feet long. Mathematics calculation such as :- 1) no. of riser = 11 × 12″÷ 6″ = 22, 2) no. of riser in a flight = 22÷ 2 = 11, 3) no of tread = 11_1 = 10, 4) total run = 10×10″ = 100″ & 5) staircase length = 100″ + 42″ = 142″ or 11.83′.

**Length of staircase for a 12 foot ceiling**:- in most homes or residential building, length of staircase or the total length of a flight of stairs for an 12-foot ceiling is approximately 13 feet long. Mathematics calculation such as :- 1) no. of riser = 12 × 12″÷ 6″ = 24, 2) no. of riser in a flight = 24÷ 2 = 12, 3) no of tread = 12_1 = 11, 4) total run = 11×10″ = 110″ & 5) staircase length = 110″ + 42″ = 152″ or 13′.