1. Tanya jhaveri | integrative studio 2
STAIRCASES
Tanya jhaveri | integrative studio 2

2. TYPES OF STAIRCASES Straight Staircases Spiral Staircases
Quarter Turn Staircases
Half Turn Staircases
Three Quarter Turn Staircases
Bifurcated Staircases
Geometric Staircases

3. Straight Staircases Advantages
Tend to be the easiest to go up and down
They work well with minimalist designed homes
Relatively easy to build railings and handrails
Measuring for railings is simple
They  only need to be connected at the top and the bottom

4. Straight Staircases Disadvantages
Straight stairs use up a fair amount of linear space which has to be planned for in your design
Some of the other stair types create a privacy barrier between the floors of your home
A stair 12 feet high requires a landing to break up the span. The addition of a landing will use up allot more space and therefore these types of stairs are seldom used in residential construction. You will see these more frequently in large commercial buildings

5. Straight Staircases - Dimensions
The run length should be 9 inches (23 cm) or longer for enough foot space.
The riser height should be 8.25 inches (21cm) or lower.
The nosing protrusion length should be inches (3.2 cm) or lower to prevent tripping on the nosing.
The headroom is recommended to be 6 feet and 8 inches (203 cm) or higher.
The stair width is recommended to be 35 inches (89cm) or longer.
8.25 inches
9 inches

6. Spiral Staircases Advantages
One of the key advantages of spiral stairs is their compactness. They are very popular on beach front decks where space is at a premium. They are also used extensively on city lofts for the same reason.
Spiral Stairs can be attractive and there are may variations on railings styles which can have a major impact on the overall appearance of the stair.
Since the center pole and landing typically provide the structural support for the stairs, they do not need much in the way of extra support structures making installation easier than many other types of stairs.

7. Spiral Staircases Disadvantages
 Spiral stairs are more difficult to navigate than other types of stairs. It is for this reason that codes do not allow them to be used as the primary access to a full second floor of a home. Walk ability improves as the outside diameter gets larger so if you have the space, you may want to consider going a bit larger. We recommend going 5 feet in diameter if you can.
It is difficult to carry large items up spiral stairs.
Only one person can go up or down the stairs at the same time.

8. Spiral Staircases- Dimensions
Minimum clear walking path of 26 inches. A 5-foot diameter or larger stair will provide this width.
Each tread will have a minimum of 7 1/2 inch tread depth at 12 inches from the narrow edge
13 inch

9. Quarter Turn Staircases
Advantages
Quarter Turn Stairs can be more visually interesting.
They provide a visual barrier between floors so they can add some privacy
Also L Stairs can help somewhat with sound transmission.
Some believe they are safer than straight stairs
They can be located in a corner of a room

10. Quarter Turn Staircases
Disadvantages
Quarter Turn stairs are a bit more difficult to build.
A support is typically required for the landing
Handrails for these types of stairs require more skill and planning to construct.
In climates where basements are used, stairs are typically stacked over each other for efficient use of space. Since basements are often used for storage, large items can be difficult to move in and out of the basement.

11. Quarter Turn Staircases- Dimensions
Head room
6’’
20’’inch
9’’ inch

12. Half Turn Staircases (U shaped)
Advantages
Half turn stairs can be easier to fit into an architectural plan.
They offer some architectural interest.
The landing(s) can offer a resting point part way up the stairs.
These staircases suit elderly people because they can take short rests at the landings if needed.
The landing in these type of stairs can be utilized for keeping decorative items, photographs or lights.

13. Half Turn Staircases Disadvantages
These types of stairs are a bit more difficult to build.
Stairs with landings require more designing and cost more than a straight staircase.
The flights of stairs-with-landings are shorter.

14. Half Turn Staircases- Dimensions
6ft 6inches
8 inches
9inches

15. Geometric Staircases Advantages
The main advantage of geometric stairs is that they require less space than many other types of stairs. They are very common in older homes, often used as a secondary staircase where the grand staircase may have been in the entry and the geometric staircase used as a access to the kitchen.
They have more visual interest. Winder stairs seem to create a more seamless transition, visually, as they meander around corners. For this reason they have gained popularity in modern homes. Their compactness has also made them attractive in sustainable home designs.

16. Geometric Staircases Disadvantages
Geometric stairs are a little harder to navigate than Quarter Turn stairs.
It can be more difficult to add a handrail to these than some of the other types of stairs.