This is a powerpoint presentation on summer training from public works department. This presentation will be very helpful for civil engineering students.

1. RAJ KUMAR GOEL INSTITUTE
OF TECHNOLOGY
CIVIL ENGINEERING
GHAZIABAD U.P. – 201003
SESSION:2018-2019
PRESENTATION ON SUMMER TRAINING AT PWD RAEBARELI
PRESENTED BY: RATNESH KUSHWAHA
ROLL NO: 1503300075

2. TABLE OF CONTENTS
 NAME AND LOCATION OF WORK
 PWD-AN OVERVIEW
 INTRODUCTION
 TYPES OF PAVEMENTS
 FLEXIBLE PAVEMENT
 RIGID PAVEMENT
 MATERIALS FOR FLEXIBLE PAVEMENT LAYERS
 COMPONENTS OF FLEXIBLE PAVEMENT

3.  TRAINING DURATION:-
FROM 06-06-2018 TO 07-07-2018
 NAME OF WORK:-
CONSTRUCTION OF LALGANJ SEMARPAHA
RALPUR ROAD RAEBARELI (ODR).
 ROAD DIMENSIONS:-
LENGTH OF ROAD- 12.6 Kms
Width of the road- 7.0ms

4. LOCATION OF WORK:-

5. Public Works Department (PWD), under the Ministry of
state government, is the pioneer in construction arena in
our country
 The PWD conducts the construction, improvements,
strengthening and maintenance of road and bridges.
 Mr. Keshav Prasad Maurya is the current PWD Minister of
Uttar Pradesh.

6. INTRODUCTION
 Roads constitute the most important mode of
communication in areas where railways have not
developed much.
 Development of a country depends on the connectivity
of various places with adequate road network.
 India has second largest road networks in the world
(over 5.6 million km at present).For the purpose of
management and administration, roads in India are
divided into the following categories:-

7. • Expressways
•National Highways (NH)
• State Highways (SH)
• Major District Roads (MDR)
• Ordinary District Roads (ODR)
• Village Roads (VR)
The status of Road Network in India is described below-
TYPE OF ROAD LENGTH (IN kms)
EXPRESSWAYS 1208
NATIONAL HIGHWAYS 101011
STATE HIGHWAYS 176166
DISTRICT ROADS 561940
OTHER RURAL ROADS 4762968
TOTAL LENGTH OF ROADS 5603293

8. TYPES OF PAVEMENTS
FLEXIBLE PAVEMENT:-
• Have low flexural strength
•Load is transferred by grain to grain contact
•Have a lifespan of 15-20 years
• Bitumen is widely used in construction along with
aggregates and filler materials.

9. RIGID PAVEMENT:-
• Design is based on flexural strength or slab action
• Constructed from cement concrete or reinforced
concrete slabs
• Have low repairing costs but completion cost is very high
• Service life could be 30 years or more.

10. MATERIALS FOR PAVEMENT LAYERS:-
 BITUMINOUS BINDER
 AGGREGATES
 COARSE AGGREGATES
 FINE AGGREGATES
 SOIL

11. COMPONENTS OF FLEXIBLE PAVEMENT
 SEAL COAT
 SURFACE COURSE
 TACK COAT
 BINDER COURSE
 PRIME COAT
 BASE COURSE
 SUB-BASE COURSE
 SUBGRADE

12. SUBGRADE:-
It is the compacted soil layer that forms the foundation of
pavement system.
The minimum thickness of subgrade is 500mm for NH, SH and
ODR and 300mm for VR.

13. SUB-BASE COURSE:-
 Serve as a effective drainage layer of pavements
It also sustains lower magnitude of stresses than the base
course
Crushed stone aggregates are often used in GSB layer.

14. BASE COURSE:-
Sustains the wheel load stresses disperses through larger
area on the GSB layer below
It enhances load carrying capacity of pavement structure
Prepared as per specifications laid by Govt. of India(MORTH)

15. PRIME COAT:-
It is the process of spraying of liquid bituminous binder of
low viscosity over a granular surface
It penetrates deep into the surface and seal the voids
Consists of 60% bitumen and 40% kerosene

16. BINDER COURSE:-
Thin bituminous surface
Prevent the entry of surface water into the pavement
layers during the rains
It helps in distribution of load through larger surface

17. TACK COAT:-
 It is the application of a small quantity of liquid
bituminous binder of low viscosity on a primed granular
surface
 The main objective of tack coat is to provide adequate
interface bond between the receiving pavement surface
and new bituminous layer being overlaid

18. SURFACE COURSE:-
It is a thick bituminous surface
Consists of crushed aggregates and bituminous binder
heated and mixed in a hot mix plant at specified temp.
Laid with the help of mechanical paver and compacted by
rollers.

19. SEAL COAT
 They are bituminous emulsions sprayed by mechanical
spray to seal the top surface
 It prevent water to penetrate into the surface
 It protects the top layer from oxidation and wear due to
exposure to sun and air.

20. The typical X- Section of the road appears as-