Shiv Ram Meena PPT PWD-1

A PRESENTATION
ON
PUBLIC WORKS DEPARTMENT (PWD)
ROAD CONSTRUCTION
MODERN INSTITUTE OF TECHNOLOGY & RESEARCH CENTRE, ALWAR
SUBMITTED TO:- SUBMITTED BY:-

Mr. NARESH AGARWAL SHIV RAM MEENA
HOD Of Civil Engg. Roll No.: 15EMCCE056
MITRC, Alwar B.Tech. VII Sem.
INTRODUCTION
 Public Works Department (PWD), under
the Ministry of Public Works
department, is the pioneer in
construction arena of Rajasthan. Over
about four centuries, PWD could
successfully set the trend and standard
in the state`s infrastructure
development. It plays a pivotal role in
the implementation of government
construction projects.
ROAD CONSTRUCTION
 The basic objective of road

maintenance is implicit in the word
itself. It is done to ensure that the
road that has been constructed, or
improved, is maintained in its
original condition.
CONSTRUCTION OF ROAD USED IN
TRANSPORTATION
THE HISTORY OF ROAD MAINTENANCE
 Traces of early roads have been found since the recorded
history of the man kind.
 The first and oldest mode of travel obviously was foot path.
 Before invention of wheel, people used to move on foot, thus
creating foot paths.
 Men and material must have been transported either on backs
of men or animals.
 The historical road development can be divided in to the
following era :
 Early/ Basic roads
 Roman roads
 Modern roads
Early/ Basic roads
The needs of road started from the invention of wheel in Samaria in

3000 BC. Among the early road inventions in many parts of the world
were :
•China Dynasty – ‘China Silk Route’ was the first road built
around 2600 BC. The road was used to transport silk and
elephant tusks between China and India
•Britain – ‘Raft Road’ believed was built around 2500 BC
•India – Indus Valley where roads made of bricks with drainage
system equipped with pipe
•
ROMAN ROADS
 Roman’s developed very elaborate system of roads mainly for the
purpose of military movement.
 They constructed in all about one lakh kilometers of road, extending in
whole of their empire.
 An Important road constructed by Romans in 312 B.C called Appian
way is still in existence in Rome.
 The main characteristics of Roman roads were as follows:
 –They weary very thick. Total thickness of the road varied from about 0.7 m
to as much as 1.2 m.
 –They were straight, without any regard for gradient. Probable reason for
straightness may be their main use for army.
 –Roads were not built on soft soil formations but on hard stratum reached
after excavation.
TYPES OF ROAD PAVEMENT
1. Laterite/Dirt Road – Original soil or compacted embankment as

surface. Normally constructed in rural area and typical soil is
laterite
2. Gravel Road – Layer of aggregate spread on compacted soil

forming stronger road
 Flexible Road Pavement – cater for higher volume
and heavier traffic compared to gravel and dirt roads
 i. Asphaltic Concrete – more superior material and widely
used. Designed for higher traffic volume and provide good
riding quality
 ii. Porous Pavement – same structured layer with asphaltic
concrete pavement except the wearing course is
constructed with open graded mix to provide interconnected
voids to enable water to infiltrate and flow on the
impermeable binder course layer to side drain. The
advantages of porous pavement are :
 Reduce flash flood on road surface
 Reduce water spray from front vehicle
 Reduce glare effect
 Reduce noise from tyre-surface contact
However, the cost is more expensive and prone to

clog problem
 iii. Stone Mastic Asphalt – same structured layer with asphaltic
concrete pavement except the wearing course is constructed
with gap graded aggregate
4. Rigid Road Pavement – similar structure layer s with
flexible pavement except concrete is used as surface
material. The advantages are :
 Stronger material
 Longer service life
 Less maintenance
 However, the cost is much higher need more time before open
to traffic and could cause higher maintenance cost if defects
occur
5. Semi-rigid road Pavement – used widely at
intersection, curves, bust stops and terminals and
ports where interlocking block is used as surface
material
ROAD GEOMETRY STANDARDS
ROAD MAINTENANCE AGENCY
 Economic Planning Unit
 Road and highway Planning Unit
 Public Work Department
 Highway Authority
 Town / District / Local Council
 City Council
 Economic Planning Unit
 The Economic Planning Unit is the
principal government agency responsible
for the preparation of development plans
for the nation.
 Public Works Department
 To provide Federal Roads facilities that
can assist is generating the country’s
economy and to improve the people’s
quality of life.
SUMMARY
 State construction structure used in

transportation
 Explain the professions that are
involved in transportation and
construction of roads and highways
 Explain the history of road construction

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A PRESENTATION

MODERN INSTITUTE OF TECHNOLOGY & RESEARCH CENTRE, ALWAR

SUBMITTED TO:- SUBMITTED BY:-

 The basic objective of road

The needs of road started from the invention of wheel in Samaria in

1. Laterite/Dirt Road – Original soil or compacted embankment as

2. Gravel Road – Layer of aggregate spread on compacted soil

However, the cost is more expensive and prone to

 State construction structure used in

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