The document is a PowerPoint presentation about bridges. It discusses what bridges are, their importance, components, types of foundations, materials used, fabrication methods, classifications of bridges according to various factors like span length and structural form, loads acting on bridges, and some landmark bridges in India like the Saraighat Bridge and Howrah Bridge.

1. 
A PowerPoint Presentation
On
BRIDGE
Presented by :
Hiren Sarkar
BPC Institute of Technology
Civil 2nd Year
Roll :- 11

2. 
Bridge is a structure built to span physical
obstacles such as a body of water, valley or
road for the purpose of providing passage over
the obstacle without closing the gap below.
Bridge building is not a new science. The
sophistication on bridge building technology
has been developing since the human
civilization.
INTRODUCTION

3. 
Connects Difficult Terrains
Easy Trade Transportation of Goods
Reduces Travelling time
Military Use
Political & Economic Importance
Less Emission due to Displacement
IMPROTANCE OF BRIDGES

4. 
COMPONANTES OF BRIDGE

5. 
COMPONANTES OF BRIDGE

6. 
The choice of bridge foundation depends upon the
importance of bridge, size, nature of soil and sub-soil in
the bed and velocity of water flow.
Foundation are grouped under
 Shallow Foundation :
1. Open Foundation
2. Block Foundation
 Deep Foundation :
1. Pile Foundation
2. Well Foundation
TYPES OF BRIDGE FOUNDATION

7. 
MATERIALS & FABRICATION
MATERIALS
 Masonry
 Timber
 Reinforced Concrete
 Pre Stressed Concrete
 Iron
 Steel
 Composites
FEBRICATION
 Precast (RC, PC)
 Cast in place (RC, PC)
 Pre Tensioned (PC)
 Post Tensioned (PC)
 Pre fabricated (Steel)
 Rivet (Steel)
 Bolted (Steel, Timber)

8. The Saraighat Bridge
Official Name : Saraighat
Carries : Rail cum Road
Design : Truss
Materials : Steel
Length : 1.49km
Width : 7.31m
Opened : 7th June 1963
The Howrah Bridge
Official Name : Rabindra Setu
Carries : 8 Lanes of road
Design : Cantilever
Length : 705m
Width : 21.6m
Opened : 3rd Feb 1919
The Bandra-Worli Sea Link
Official Name : Rajiv Gandhi Sea Link
Carries : 8 lanes of Traffic
Design : Cable-Stayed
Length : 5.6km
Width : 40m
Opened : 30th June, 2009
LAMDMARK BRIDGE OF INDIA

9. 
According to the flexibility of
superstructure
According to the position of Bridge
Floor
According to the Inter-span relations
According to the form or type of
superstructure
CLASSIFICATION OF BRIDGE

10. 
LOADING ON BRIDGE
Dead load
Live load
Buoyancy
Pressure
Centrifugal Force
Earth Pressure
Seismic Load
Water Pressure
Wind Load
Thermal Forces

11. 
Short Span : 6m. to 30m.
Medium Span : 30m. to 100m.
Long Span : Getter than 100m.
Span > 6m. → Bridge Span < 6m. → Culvert
CLASSIFICATION OF BRIDGE
ACCORDING TO SPAN LENGTH

12. 
BASIC TYPES BASED ON
STRUCTURAL FORM