Post on 02-May-2023
INTRODUCTION• What’s Stair?• Difference between Stair & Stair case
• Purpose Of Stair case• For residential building size should be 16 cm*26 cm(rise*going)
• For hospital etc it should be 10 cm*30 cm(rise*going)
• Line of nosing• Pitch/Slope• String/Stringers• Newel post• Baluster• Balustrade• Hand rail• Head room• Run• Header
MATERIALS USED There are different types of materials which are being used for the construction of stair case from ages . They are
• Brick• Stone• R.C.C• Wood• Steel• Glass
BRICK STAIR CASE• Not very common• Consists of either solid wall or also arched openings may be left for obtaining storage space as shown
• Stone slabs required as maintenance
R.C.C STAIR CASE• Uses• Advantage over other types• Costly• 2 types i.e. stairs with slab spanning horizontally and stairs with slab spanning longitudinally
TYPES OF STAIR CASEDepending upon the look of 1st stair it’s of
following types• Flier• Bull nose type• Round ended step• Splayed step• Commode step• Dancing step• Winder
CLASSIFICATIONStair case is of following types• Straight Stair Case• Turning Stair Case• Dog-legged Stair Case• Bifurcated Stair Case• Continuous Stair Case
STRAIGHT STAIR CASE• Single , Double , Triple Flights
• Number of landings• Number of treads & rises remains same through out
• Uses
TURNING STAIR CASE• Mainly three types i.e. Quarter turn , Half turn and Three quarter turn
• Quarter turn stair case construction & uses
• Half turn stair case types and construction
• Three quarter turn stair case construction and uses
DOG-LEGGED STAIR CASE• Name due to appearance• Solid newel category• Landings with half space or quarter space with winders
• No space between outer strings
BIFURCATED STAIR CASE• Commonly used in public buildings
• Wider flight at the bottom which bifurcates into two narrower flights i.e. left & right
• Types (Newel or Geometrical)
CONTINUOUS STAIR CASE• Divided into circular , spiral & helical stair case
• Made up of R.C.C or metal• Found in space limited location • Used as emergency stair case; so found at the back side of building mostly
• All steps are winder type
CONCLUSION• It should be fire resistive• Should carry heavy load • Should be proper oriented for decorative purpose