Girder Bridge is most critical construction technique with all aspects. For fast tracking this kind of projects new and efficient machines are used. Some details given to this presentation for better understanding and knowledge.

1. Presented By:
Abdul Imran (AB18025)
Chethan Babu (AB18007)
Jayanta Sen (AB18005)
Guided By:
Prof. Aritra Halder

2. Famous Bridges of India

3. Major Components of Bridge
Sub Structure
• Piles
• Pile Caps
• Piers
• Pier Caps
Bearings
• Transmit Load
from Super
Structure to
Sub Structure
Super Structure
• Girders
• Decking
• Abutment Walls
• Railings/Arches

4. Girder
Girder is a horizontal beam that can be made from a variety of
construction materials such as stainless steel, concrete, or a
combination of both materials.
Types of Girder
I-Beam
Girder
Box
Girder
Plate
Girder
Girder
Bridge
As per used
Material
Concrete
Girder
Steel
Girder
Wooden
Girder
As per
Shape
I-Beam
Girder
Box Girder
Plate
Girder

5. Girder Launcher
For different methods of bridge construction different types machine used. We considered only three types as followed:
 Span by Span erection on False work.
 Incremental Launching erection by Hydraulic system.
 Progressive Placement erection by Launching gantry.
Span by Span erection on False work
 Step-1: A firm base level surface has created using
compacted soil in between Piers.
 Step-2: Temporary structure using steel scaffolding
has erected above compacted soil to provide support
during girder erection.
 Step-3: Help of heavy duty crawler mounted crane
girder and deck is brought to it required erection
position.
 Step-4: After Post-tensioning/final welding support
has been removed.

6. Incremental Launching erection by Hydraulic System
This method was used to push the steel road deck over bridge piers.
The trick was to use this launching system to jack up the deck and
inch it forward each system used two wedge shape log under each
side of the deck. The upper wedge was pulled by the hydraulic
round, its slide up the slope of the bottom wedge at same time
lifting up the deck by upper wedge at advancing it then lower wedge
retract dropping the deck to its support by upper wedge and
process repeats.

7. Working Diagram of Hydraulic Launching System

8. Hydraulic Launching System Video
Declaration :
We are thankful to National Geographic Channel to share such a wonderful Megastructure video on Millau Viaduct. This video has been collected from youtube.com for our study and presentation purpose. If National
Geographic Channel will have any objection in future then please contact us at mail id: abdulimran987@gmail.com, chethan.rbabu95@gmail.com, and jayantajgec09125@gmail.com.

9. Progressive Placement erection by Launching Gantry
HZP 500
SLJ 900

10. Components of HZP 500
Main Girder
Support leg for longitudinal moving
Rear support leg
Front support leg
Lifting trolley
Trolley for dropping Girder

11. HZP 500 Working Procedure Video
Declaration :
We are thankful to ZZHZ.com to share such a wonderful video. This video has been collected from youtube.com for our study and presentation purpose. If ZZHZ.com will have any objection in future then please contact us
at mail id: abdulimran987@gmail.com, chethan.rbabu95@gmail.com, and jayantajgec09125@gmail.com.

12. Components of SLJ 900
Main Girder
Supporting wheel
Rear support leg
Front support leg
Lifting trolley
Moving wheel

13. SLJ 900 Working Procedure Video
Declaration :
We are thankful to V. Idea to share such a wonderful video. This video has been collected from youtube.com for our study and presentation purpose. If V. Idea will have any objection in future then please contact us at mail
id: abdulimran987@gmail.com, chethan.rbabu95@gmail.com, and jayantajgec09125@gmail.com.
https://www.youtube.com/watch?v=AHY7iKWuBlU