stairs presentation
Post on 22-Feb-2017
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STAIRS
Represented by:- Abdirahman Beder muse
Roll:-08Dhaka International University
definition
A stair may be defined as series of steps suitably arranged for the purpose of connecting different floors of a building.
Parts of stair
1. Newel post :This is the vertical member which is placed at the ends of flights
to connect handrail .2. Run :It is the total length of stairs in a horizontal plane, including
landings.3. Nosing :It is the projecting part of the tread beyond the face of the riser.It is rounded to give good architectural effect.4. String Or Stingers :These are the sloping wooden members which support the steps
in a stair .They run along the slope of the stair.
5. Step :It is a portion of stair which permits ascent & descent.6. Tread :It is the upper horizontal portion of step upon which the feet is
placed.7. Riser :The vertical portion between each tread on the stair.8. Handrail :A handrail is a rail that is designed to be grasped by the hand so as
to provide stability or support9. Baluster :It is vertical member of wood or metal supporting the handrail.
Handrail Bluster
Newel
Newel cup
Risers
Noising
Run
Tread
A:- Classification of stairs in the shape
Straight stair Open newel stair Circular stair Dog-legged stair Geometrical stair Bifurcated stair
Straight strainThe most obvious Use of the straight strainis to form an access toEntrance, porch or Portico.
Straight stair
Handrail
Address:- uttura masjid
Open newel strain
• It consist of two or more , straight Flights arranged in such a manner That a clear space called {well}Occurs This well may be rectangular or of any geometrical shape and it can be used for fixing lift
Open newel stair
Handrail
address:- permanent campus of DIU
Circular stairIt is known as spiral stair.
When viewed from top it appears to follow a circle with a single centre of curvature.
The spiral stairs are provided where space available is limited and traffic is low.
These stairs can be constructed in R.C.C., Steel or Stone
THIS IS FROM INTERNET
DOG-LEGGED STAIR It consists two straight flights of steps with abrupt turn between them .Usually a level landing is placed across the two
GEOMETRICAL STAIR
This is a similar to the open newel stair with the difference that he open well between forward and back ward flight is. curved
Handrail
Bluster
Address:- Diu banani campus
BIFURCATED STAIR
•This type of stair is provided in modern public building .•The two narrow flight starts from either side of the mid-landing.
Bifurcated stair Handrail
This is from internet
B:- classification of stair in material
Wooden stair Stone stair Metal stair Reinforced concrete Escalators
Wooden stair
Timber is mainly used for stair construction where fire resistance is not of much consideration.
Timber stairs areI. CheapII. Easy in constructionIII. Light weight
Less 32 mm
Stone stairStair made out of hard, strong, resisting to
wear Stones are found to be durable and fire
resisting.They are commonly constructed in work
shops,Warehouses and other public buildings.
Stone stair this is from internet
Escalators
A power-driving, include, continuous stair way, used for raising or lowering the passenger
Is called an escalatorThe main components of an escalator are
steel Trussed frame work and hand rails
Handrail
Address:- over bridge at the airport
Metal stair
Address:-0ver bridge in middle badda
Reinforced concrete
Address:- Mirpur road, Dhanmondi , Dhaka , Bangladesh
Some Amazing Stairs :
STAY HEALTHY !!!
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