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TYPES OF STAIR CASES
Stair case :
1 STRAIGHT STAIRS
 These are the stairs along which there is no change in direction on any flight between
two successive floors. The straight stairs can be of following types.
 Straight run with a single flight between floors
 Straight run with a series of flight without change in direction
 Parallel stairs
 Angle stairs
 Scissors stairs
 Straight stairs can have a change in direction at an intermediate landing. In case of
angle stairs, the successive flights are at an angle to each other. Scissor stairs are
comprised of a pair of straight runs in opposite directions and are placed on opposite
sides of a fire resistive wall.
Over view of straight stairs
With one flight : With two flights :
2 QUARTER TURN STAIRS
 They are provided when the direction of flight is to be changed by 900. The
change in direction can be effected by either introducing a quarter space landing
or by providing winders at the junctions.
3 HALF TURN STAIRS :
 These stairs change their direction through 1800.
 It can be either dog-legged or open newel type.
 In case of dog legged stairs the flights are in opposite directions and no space is
provided between the flights in plan.
 On the other hand in open newel stairs, there is a well or opening between the
flights and it may be used to accommodate a lift. These stairs are used at places
where sufficient space is available.
Over view of half turn stairs :
Half turn stair :
4 Circular stairs
 These stairs, when viewed from above, appear to follow 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 in stone, cast
iron or R.C.C.
Plan and section of circular stair :
END OF SESSION
Thank You
-naveen

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Types of staircases

  • 3. 1 STRAIGHT STAIRS  These are the stairs along which there is no change in direction on any flight between two successive floors. The straight stairs can be of following types.  Straight run with a single flight between floors  Straight run with a series of flight without change in direction  Parallel stairs  Angle stairs  Scissors stairs  Straight stairs can have a change in direction at an intermediate landing. In case of angle stairs, the successive flights are at an angle to each other. Scissor stairs are comprised of a pair of straight runs in opposite directions and are placed on opposite sides of a fire resistive wall.
  • 4. Over view of straight stairs With one flight : With two flights :
  • 5. 2 QUARTER TURN STAIRS  They are provided when the direction of flight is to be changed by 900. The change in direction can be effected by either introducing a quarter space landing or by providing winders at the junctions.
  • 6. 3 HALF TURN STAIRS :  These stairs change their direction through 1800.  It can be either dog-legged or open newel type.  In case of dog legged stairs the flights are in opposite directions and no space is provided between the flights in plan.  On the other hand in open newel stairs, there is a well or opening between the flights and it may be used to accommodate a lift. These stairs are used at places where sufficient space is available.
  • 7. Over view of half turn stairs :
  • 9. 4 Circular stairs  These stairs, when viewed from above, appear to follow 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 in stone, cast iron or R.C.C.
  • 10. Plan and section of circular stair :
  • 11. END OF SESSION Thank You -naveen