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Types Of Stairs Used In Buildings

What Is Stair?

Stairs are the most important components in a building. They are used to access various floors. There are different types of stairs such as spiral stairs, dog legged stairs, open newel stairs, etc, used in commercial, residential buildings, and industrial buildings.


The detailed classification of staircase is discussed below.

Types Of Stairs Used In Building:

Depending upon the various arrangement of steps, stairs can be classified into the following types:

  • Straight Stair,
  • Dogged-legged Stair,
  • Open Newel Stair,
  • Geometrical Stair,
  • Circular Stair,
  • Spiral Stair,
  • Quarter-turn Stair,
  • Bifurcated Stair.

1. Straight Stair:

In these types of stairs, all the steps are arranged continuously along in one direction. One flight may be split into one or more than one flight by interposing a landing. This stair can be used where narrow and long space is available for a staircase such as entrance, porch etc.

straight stairs

2. Dog-legged Stair:

This stair types consist of two straight flights of steps with direct turns between them. This stair is very useful where the total width of the stair is just twice the width of the steps.

dog legged stairs

3. Open Newel Stair:

This type of stairs consists of two or more flights arranging a well or opening between the backward and forward flights. When all the steps are difficult to arrange in two flights, a short third flight of 3 to 6 steps may be provided along the direction perpendicular to the hall. Open newel stair is mostly adopted in the lift.

open newel stairs

4. Geometrical Stair:

This is another type of open newel stair where the open well between the forward and the backward flight is curved. This stair may contain different geometrical shapes. Here the change in direction is achieved by using winders.

5. Circular Stair:

In these types of stairs, all the steps radiate from a newel or well hole, in the form of winders. The circular stair is adopted at the backside of a building to access its various floors.

circular stairs

6. Spiral Stair:

The spiral stair is very similar to a circular stair. It consists of individual steps or treads, connecting to a center column. The overall diameter of the stair may range from 1 to 2.5 m.

spiral stairs

7. Quarter-turn Stair:

The quarter-turn stair can be defined as the stairs that are turned at 90 degrees with the help of level landing.

classification of stairs

8. Bifurcated Stair:

These types of stairs are provided in modern public buildings as well as residential buildings. In this stair, the flight is so arranged that there is a wide flight at the start which is sub-divided into narrow flights at the mid-landing. The narrow flights start from either side of the mid landing.

Also Read –

What Is Sunk Slab?

Requirements Of A Good Stair

Components Of A Building

Advantages Of RCC Stairs

How to Calculate Volume Of Concrete For Staircase

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Comments ( 7 )

  1. I like this pls can this management include design of stairs? Thanks

  2. I like design of stairs.

  3. Mofarjul hossain
    March 12, 2017 at 1:01 pm

    Types of stair design of a like.

  4. I’ll like to get details of construction of deferential stairs

  5. 22’x24′ Area 02 Storied Bldg.

  6. Can u pliz tell me what course will be the best in civil engineering for studying MS aboard

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