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Types of Stairs or staircase, for civil engineering

Types Of Stairs 


Generally Stairs are of the following type

1. Straight stairs

These are the stairs along which there is no  change in direction of any flight between two successive floors. The straight stairs can be 

a. Straight run with a single flight between floors

b. Straight run with a series of flights without change in direction.

c. Parallel stairs

d. Angle stairs

e. Scissors stairs



2. Quarter turn stairs

They are provided when the direction of flights is to be changed by 90°. The change in direction can be effected by either introducing a quarter-space landing or by providing winders at the junction.



3. Curved stairs

These stairs when viewed from above, appear to follow a curve with two or more centres of curvature such as an ellipse.



4. Spiral stairs

These stairs are similar to circular stairs except that the radius of curvature is small and the stairs may be supprted by a centre post. Overall diameter of such stairs may range from 1 to 2.5 m


5.Circular stairs

These stairs when viewed from above, appear to follow a circle with a single centre of curvature and large radius. These stairs are generally provided at the rear of a building to give access for servicing at various floors. All the steps radiate from a newel post in the form of winders. These stairs can be constructed stone, cast iron or RCC.

6. Three quarter turn stair

This type of stairs change their directions through 270°. In other words, direction is changed three times with its upper flat crossing the bottom one. In this type of construction an open well is formed.



7. Geometrical stairs

These stairs have no newel post and are of any geometrical shape. The change in directions in these stairs is achieved through winders. The stairs require more skill for its construction and are weaker than open newel stairs, the open well between the forward  and the backward flight is curved.



8. Bifurcated stairs

These stairs are so arranged that there is a wide flight at the start which is subdivided into narrow flights at the mid-landing. The two narrow flight start from either side of the mid-landing. Generally these stairs are more suitable for public buildings.




9. half turn stairs

These stairs change their direction through 180°. 






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  1. samirOctober 14, 2020 at 3:36 AM

    This comment has been removed by the author.

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  2. samirOctober 14, 2020 at 3:40 AM

    Great i have easily understand.
    This information is really helpful for me

    ReplyDelete

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