STAIRCASES
Submitted by:
Arpita Choudhury 071003
Krati Agrawal
071013
Ruchira Gaur
071028
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-HandrailNewel Post
Guide lines for fixing the dimensions
Rise (R)
Tread (T)
: 150mm to 180mm
: 220 mm to 250 mm- for residential buildings.
Rise (R)
Tread (T)
: 120 to 150 mm
: 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.
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.
CLASSIFICATION
Based on shape of plan:
Straight staircase
“U” staircase
Stair Plans
“C” Staircase
Adjustable Staircase
Stair Plans
“L” Staircase
Based on shape
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Straight stairs
Dog legged stairs
Open well or open newel stairs
Geometrical stairs such as spiral, circular, etc.
Free standing stair cases
Bifurcated staircase
Some photos
Straight SC
Dog legged SC
Geometric SC
Bifurcated SC
Open Well or Newel stair cases
II- FLIGHT
LANDING
OPEN
WELL
OPEN
WELL
I- FLIGHT
III- FLIGHT
WITH INTERMEDIATE FLIGHT
WITHOUT INTERMEDIATE FLIGHT
Types of staircases based on materials
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Stainless steel
Timber/Wood
Glass
Iron
Aluminium
Concrete
Central Carriage Glass SC
Concrete Bullnose SC
“U” Shaped SC
Helix Spiral SC
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 clearfinished treads and continuous handrails.
Tuscan stairs were often tiled over concrete.
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.
Different Designs of Balusters
Special Staircases: Some examples
Glass Staircases
These are made by using stainless
steel bars and brackets, and thick
glass slabs as treads.
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.
Scala Contarni del Bovolo, Venice
Spiral staircase used as facade
Staircase as a
Sculpture
by Olafur Eliasson, 2004,
Munich, Germany.
These staircase are not a
structural but just an aesthetic
element of design
Thank You