STAIRCASES

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STAIRCASES

• Submitted by
• Arpita Choudhury 071003
• Krati Agrawal 071013
• Ruchira Gaur 071028

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Definition

• Construction designed to bridge a large vertical
  distance, by dividing it into smaller vertical
  distances called steps.
• Different parts of staircase
• STEP--Tread-Riser
• BALUSTRADE--Baluster-Handrail-
• Newel Post

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Guide lines for fixing the dimensions

• Rise (R) 150mm to 180mm
• Tread (T) 220 mm to 250 mm- for residential
  buildings.
• Rise (R) 120 to 150 mm
• Tread (T) 250 mm to 300 mm for public
  buildings
• T 2R Between 500 mm to 650 mm
• The width of the stair
• 0.8 m to 1 m for residential building and
• 1.8 m to 2 m for public building.

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Guide lines for fixing the dimensions Contd

• The width of the landing is equal to the width of
  stairs.
• The number of steps in each flight should not be
  greater than 12
• The pitch of the stair should not be more than 38
  degrees.
• The head room measured vertically above any step
  or below the mid landing shall not be less than
  2.1 m.
• The height of the balusters should be around 0.75
  to 1 m.
• The space between two balusters should not be
  more than 30 -40 cm.

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CLASSIFICATION
Based on shape of plan
Straight staircase
U staircase
C Staircase
Stair Plans
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Adjustable Staircase
L Staircase
Stair Plans
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• Based on shape
• Straight stairs
• Dog legged stairs
• Open well or open newel stairs
• Geometrical stairs such as spiral, circular, etc.
• Free standing stair cases
• Bifurcated staircase

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Some photos
Dog legged SC
Straight SC
Geometric SC
Bifurcated SC
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Open Well or Newel stair cases
II- FLIGHT
LANDING
OPEN WELL
OPEN WELL
III- FLIGHT
I- FLIGHT
WITH INTERMEDIATE FLIGHT
WITHOUT INTERMEDIATE FLIGHT
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Types of staircases based on materials

• Stainless steel
• Timber/Wood
• Glass
• Iron
• Aluminium
• Concrete

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Central Carriage Glass SC
Concrete Bullnose SC
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U Shaped SC
Helix Spiral SC
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Stepsure Winder System Easier to negotiate than
triangular winders Provides a spacious passing
point
Tuscan Staircase Characteristic to the Tuscan
style are clean lines and strong visual elements
such as steel balusters, cut stringers, with
paint finishes that highlight clear-finished
treads and continuous handrails. Tuscan stairs
were often tiled over concrete.
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Victorian Staircase Victorian staircases have a
solid architecture style, strong on decoration,
with large newel posts, elaborate turnings, and
complex tread bracket designs. Elaborate handrail
contours and patterns, handrails were often
larger (80mm 60mm) and continuous. Timbers are
deep in colour, or are stained to a rich dark
finish.
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Different Designs of Balusters
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Special Staircases Some examples
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Glass Staircases

• These are made by using stainless steel bars and
  brackets, and thick glass slabs as treads.

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Disappearing Steps

• They work by having the frame of the stairs slide
  out from the wall, powered by hydraulic pistons,
  and having the stair planks fold over the frame
  one at a time. When finished, the stair frame
  slides back in the wall and the planks stand
  straight up, flush against the wall.

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Scala Contarni del Bovolo, Venice Spiral
staircase used as facade
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Staircase as a Sculpture
by Olafur Eliasson, 2004, Munich,
Germany. These staircase are not a structural
but just an aesthetic element of design
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Thank You