It consists of two straight flights with a 180° turn between the two. They are very gently used to give access from floor to floor. as per below fig. shows this arrangement of steps in such stairs.
It differs from dog legged stairs such as that in this case, there are 0.15 m to 1.0 m gaps between the two adjacent flights. As per below fig. shows a typical open newel stair.
This types of stair is the same as to the open newel stair except that well-formed between the two adjacent flights is curved. The handrail provided is continuous.
These stairs are generally used as per emergency exits. It consists of a central post supporting as series of steps arranged in the form of a spiral.
At the end of the steps, a continuous handrail is provided.
Such as stairs are provided where space available for stairs is very much limited. As per below fig. shows this typical spiral stair. Steel, Cast iron, or R.C.C. is used for building these stairs.
Apart from open newel and dog-legged types turns, stairs may turn in various forms.
They depend upon the available space for stairs. Quarter-turnedhalf turned with few steps in between, and bifurcated stairs are some of such turned stairs. As per below fig. shows a bifurcated stair.
A flat surface, especially one in a series, on which to place one's foot when moving from one level to another. all step is composed of tread and riser.
This riser is the vertical portion between each tread on the stair.
Not all stairs have risers. The rise-less steps are called the open thread.
Open riser stairs have grown in popularity Recently years. Closed tread stair has risers included.
This vertical board forms the face of the step, also forms the space between one step and the next.
Rise provided could be uniform. It is normally hight 150 mm to 175 mm in residential buildings while it is kept between hight 120 mm to 150 mm in public buildings.
However, in commercial buildings, more rise is provided from the consideration of the economic floor area.
Nosing is the flat protruding edge of a stair at which most foot traffic occurs.
Mostly, it's the half curved molding fixed into the ends of those threads exposed at a half that covers where the balusters fit into the treads.
Nosing is the border of the tread projecting beyond the face of the riser and the face of a cut string. This is the place where the thread above a riser overhangs it. Sometimes, the tread may not have a nosing.
Where stairs are open both sides or on one or, the first step above the lower floor might be wider than the other steps and round.
The balusters usually form a semicircle around the circumference of the rounded portion, and the handrail has a horizontal spiral known as a"volute" which supports the top of the balusters.
Aside from the cosmetic appeal, beginning steps allow the balusters to form a wider, more stable base at the end of the handrail.
Handrails that simply end in a post at the foot of the stairs can be sturdy, in spite of a thick post. A double bullnose may be used when either side of the staircase is open.
The angled member for handholding, as distinguished by the vertical balusters that hold this up for stairs which are open on either side; there is often a railing on each side, sometimes only on one side or maybe not at all, on wide staircases, there's sometimes also one at the middle or more.
Banister Definition: The term"banister" is sometimes utilized to mean just the handrail, or sometimes the handrail and the balusters, or sometimes just the balusters.
A volute is a handrail end element for its curtail or bullnose footsteps that curve inward, such as a spiral. It's said to be left or right-handed, depending on which side of the handrail is as one faces up the stairs.
The detail is similar to a scroll in the entry of a handrail, sometimes known as a monkey's tail. Available with an up-ramp, it's installed in the bottom of this side on a starting step, extending out from this side of the staircase.
But, it's the most difficult installation procedure you are able to find in a staircase
The wood handrails often have a metal core to provide extra stiffness and strength, especially when the rail must curve against the grain of their wood.
As per archaic term for the metal, the core is"core rail."
For systems in which the baluster doesn't start at the treads, they go to a base rail. This allows for identical balusters, avoiding this second baluster problem.
This is the width of the tread between two successive risers. In other words, it is the horizontal distance between the faces of two consecutive risers.
Treads: Treads are the horizontal surfaces of the stairs on which you step while ascending or descending. They are designed to provide a safe and comfortable surface for walking. Treads can be made from various materials such as wood, stone, concrete, or metal.
Risers: Risers are the vertical components that connect each tread, forming the vertical face of the step. Risers help prevent you from tripping or slipping between the treads. In some staircase designs, there may be open risers where the vertical space between treads is left empty for aesthetic or functional purposes.
Stringers: Stringers are the structural components that support the treads and risers. They run diagonally along the sides of the staircase and provide stability and strength. Stringers can be made of wood, steel, or concrete, depending on the design and material of the staircase.
Straight Staircase: Straight staircases are the most common and straightforward design. They consist of a straight flight of steps without any turns or curves. Straight staircases are efficient in terms of space utilization and provide a simple and clean look.
L-Shaped Staircase: L-shaped staircases make a 90-degree turn, typically at a landing or intermediate platform. They can be designed with a single landing or multiple landings, depending on the available space. L-shaped staircases are versatile and can fit into various architectural styles.
U-Shaped Staircase: U-shaped staircases feature two flights of steps that turn 180 degrees, creating a U shape. These staircases often have a landing between the two flights, providing a larger platform and more visual interest. U-shaped staircases are visually striking and offer a sense of elegance and grandeur.
Tread: The horizontal part of the step where you place your foot.
Riser: The vertical part of the step that connects each tread.
Stringer: The structural component that supports the treads and risers. It can be either a single stringer located at the center or two stringers on either side.
Baluster: Also known as a spindle or picket, it is a vertical post that supports the handrail. Balusters are typically evenly spaced along the length of the handrail.
Handrail: The horizontal rail that provides support for people while ascending or descending the stairs.
Newel Post: A large, decorative post located at the bottom, top, or turning point of a staircase. It supports the handrail and provides stability to the staircase.
Balustrade: The entire system comprising the handrail, balusters, and newel posts.
Nosing: The rounded edge of the tread that extends beyond the riser.
Landing: A flat area at the top or bottom of a staircase or at intervals in between flights of stairs.
Finial: A decorative element placed on top of newel posts or at the ends of handrails.
Rail Fittings: Connectors and brackets used to secure the handrail to the newel posts and attach different sections of the handrail together.
NewelCap: A decorative element placed on top of the newel post.