STAIR CASE

Contents• Introduction• Technical Terminology• Materials Used• Types• Classification• Conclusion

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)

TECHNICAL TERMINOLOGY

TECHNICAL TERMINOLOGY

• Step• Tread• Riser• Flight• Landing• Rise• Going• Nosing• Scotia• Soffit

• 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

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

STONE STAIR CASE

STONE STAIR CASE• Strength• Mainly in temple area• Fire resistive• Economic• Types

R.C.C STAIR CASE

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

TIMBER STAIR CASE

TIMBER STAIR CASE• Use limit• Low cost• Advantage

STEEL STAIR CASE

STEEL STAIR CASE• Uses• Advantages• Costly

GLASS STAIR CASE

GLASS STAIR CASE• Uses• Purpose• Advantage/Disadvantages• High cost

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

TYPES OF STAIR CASEBull nose , Round ended , Splayed , Commode , Dancing & Winders

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

STRAIGHT STAIR CASE

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

QUARTER TURN STAIR CASE

HALF TURN STAIR CASE (OPEN NEWEL)

THREE QUARTER TURN STAIR CASE

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

DOG-LEGGED STAIR CASE(HALF SPACE LANDING)

DOG-LEGGED STAIR CASE(QUARTER SPACE LANDING)

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)

BIFURCATED STAIR CASE

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

SPIRAL STAIR CASE

HELICAL STAIR CASE

CIRCULAR STAIR CASE

CONCLUSION• It should be fire resistive• Should carry heavy load • Should be proper oriented for decorative purpose

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