This document provides details about a practical training project completed on the construction of a high flood level bridge across the Mahi River from May 23, 2016 to July 23, 2016. The key aspects summarized are: - The bridge was 360m long with 12 spans of 30m each and cost approximately 12 crore rupees to construct. - Foundations included excavating for and constructing rafts for the abutments and piers. Piers and pier caps were also constructed to support the girder spans. - Precast prestressed concrete girders were launched into place using cranes and temporary bearings. The girders rested on pot/PTFE bearings. - The

1. A
Presentation
on
Practical Training
taken at
DURATION: 23/05/2016 to 23/07/2016
SUBMITTED BY :
1. TEJPRAKASH KUMAWAT
Final Year B.Tech (Civil)
SUBMITTED TO :
DEPARTMENT OF CIVIL
ENGG.
DEPARTMENT OF CIVIL ENGINEERING
GOVT ENGINEERING COLLEGE
BANSWARA
HIGH FLOOD LEVEL BRIDGE ACROSS
MAHI RIVER

2. Details Of The Project:
Site location:- HFL Bridge across Mahi river, Pipalkhut , Pratapgarh
abutment type:- Conterfront Type.
Bearing:- POT/ PTEF Bearing.
Girder:- Precast PSC Girder.
Handrail:- Steel Hand rail with welded mesh.
Reinforcement:– HYSD Bar ( 8 mm To 32 mm).
About the project:- Construction of HFL bridge across Mahi river at Chain age 118+363 at pipalkhut on Pratapgarh padi road
(National highway NH-113).
Construction Company:- Dilip Buildcon Ltd. , Bhopal
Project In charge:- Mr. P.K. Mishra
Project Engg.:- Mr. Ramesh Babu
Expect Cost:- Rs. 12 cr after dismantling.
Date of Initiate:- 26 –Apr-2014
Date of Completion:- 24-Oct- 2016
Bridge length- 360 m
span- 12 (12×30) m

3. CONTENT
1. EXCAVATION WORK FOR RAFT
2. RAFT OF ABUTMENT AND PIER
3. PIER
4. PIER CAP
5. ABUTMENT
6. PEDESTAL
7. PLACE FOR JACK
8. GIRDER LAUNCHING
9. SLAB

4. EXCAVATION WORK FOR RAFT
• A RAFT FOUNDATION IS A TYPE OF FOUNDATION THAT SPREADS THE LOAD
FROM A BUILDING OR STRUCTURE OVER A LARGE AREA.
• RAFT FOUNDATIONS ARE ALSO USED TO REDUCE THE SETTLEMENT OF
STRUCTURES LOCATED ABOVE HIGHLY COMPRESSIBLE DEPOSITS.
• RAFT ARE USUALLY AT SOME DEPTH IN THE GROUND ,A LARGE VOLUME OF
EXCAVATION MAY BE REQUIRED.

5. Fig: excavation work for foundation

6. RAFT OF ABUTMENT AND PIER
• LEVEL THE GROUND
• PCC OF M15 GRADE CONCRETE
• PLACE THE REINFORCEMENT AS PER DRAWING
• COVER =75MM.
• HEIGHT = 1.1 M

7. Fig: Reinforcement details of raft

9. PIER
• MULTI-SPAN BRIDGES REQUIRE PIERS TO SUPPORT THE ENDS OF SPANS BETWEEN
ABUTMENTS
• TRANSFER LOAD OF SLAB,GIRDER,PIERCAP TO RAFT
Fig: pier

10. Fig: details: of pier

11. PIERCAP
THE UPPER OR BEARING PART OF THE PIER, USUALLY MADE OF CONCRETE OR
HARD STONE; DESIGNED TO DISTRIBUTE CONCENTRATED LOADS EVENLY OVER
THE AREA OF PIER.
 THE WIDTH OF PIER CAP DEPENDS UPON THE WIDTH OF CARRIAGEWAY, ITS SIZE
DEPENDS UPON THE LIVE LOAD AND DEAD LOAD BRIDGE CAPACITY
GRADE OF CONCRETE M35
QUANTITY OF CONCRETE 35.567 M3

13. ABUTMENT
ABUTMENT CONSIST OF THREE PARTS
MAIN WALL
COUNTER FRONT WALL
RIDING RETAINING WALL

14. Fig: abutment

15. PEDESTAL
• USED TO TRANSFER LOAD FROM BEARING TO PIERCAP
• GRADE OF CONCRETE USED M35

16. PLACE FOR JACK
• THE LOCATION OF JACK AND TEMPORARY BEARING FOR LIFTING OF THE
SUPERSTRUCTURE TO REPLACE BEARING ETC. THIS IS SHOWN BY SYMBOL
• THE TWO LAYRS OF MESH REINFORCEMENT ONE AT 20 MM FROM TOP AND THE
OTHER AT 100 MM FROM TOP OF PEDESTAL AND PIERCAP EACH CONSISTING OF
8 MM BARS AT 75 MM IN BOTH DIRECTIONS SHALL BE PROVIDED DIRECTLY
UNDER THE BEARING/JACK AND TEMPORARY BEARING
+

18. LAUNCHING OF GIRDERS
 SITE PREPARATION
 BASIC PLANNING
 PLACING OF GIRDER ON EXCEL PULLER OF CAPACITY 125 T
 TRANSPORT TO THE LOCATION
 LIFTING THE GIRDER BY USING THE CRANE CAPACITY OF 250 T
 FIXING THE POT/ PTEF BEARING IN GIRDER
 PLACING OF GIRDER IN PROPER LOCATION WITH PROPER SAFETY & SUPPOR

21. FIXING THE POT/ PTEF BEARING IN GIRDER

23. METHODOLOGY OF CAST IN SITU SLAB
1. Reinforcement & Concreting of End & Middle
Diaphram
2. Fixing of shuttering
3. Placing reinforcement as per drawing &
specification
4. Pouring of concrete M40 as per approved mixed
design

24. inforcement & Concreting of End & Middle Diaphram

25. FIXING OF SHUTTERING

26. PLACING REINFORCEMENT AS PER DRAWING
& SPECIFICATION

27. POURING OF CONCRETE M40 AS PER APPROVED MIXED
DESIGN