HE (Diploma Civil Engineering 5th)

1. Introduction (02 hrs)

1.1 Importance of Highway engineering

1.2 Functions of IRC, CRRI, MORT&H, NHAI

1.3 IRC classification of roads

2. Road Geometrics (10 hrs)

2.1 Glossary of terms used in road geo-metrics and their importance: Right of

way, formation width, road margin, road shoulder, carriage way, side

slopes, kerbs, formation levels, camber and gradient

2.2 Average running speed, stopping and passing sight distance

2.3 Necessity of curves, horizontal and vertical curves including transition

curves. Super elevation and methods of providing super elevation

2.4 Sketch of typical cross-sections in cutting and filling on straight alignment

and at a curve

(Note: No design/numerical problem to be taken)

3. Highway Surveys and Plan (10 hrs)

3.1 Topographic map, reading the data given on a topographic map

3.2 Basic considerations governing alignment for a road in plain and hilly area

3.3 Highway location; marking of alignment

4. Road Materials (10 hrs)

4.1 Different types of road materials in use; soil, aggregate, binders – bitumen,

cutback, Emulsion and Modified Bitumen (CRMB, PMB)

4.2 Binders: Common binders; bitumen, properties as per BIS specifications,

penetration, softening point, ductility and viscosity test of bitumen,

procedures and significance, cut back and emulsion and their uses,

Bitumen modifiers

5. Road Pavements (12 hrs)

5.1 Road pavement: Flexible and rigid pavement, their merits and demerits,

typical cross-sections, functions of various components

5.2. Introduction to California Bearing Ratio, method of finding CBR value

and its significance. Aggregate : Source and types, important properties,

strength, durability

5.3 Sub-grade preparation:

Setting out alignment of road, setting out bench marks, control pegs for

embankment and cutting, borrow pits, making profiles of embankment,

construction of embankment, compaction, preparation of subgrade,

methods of checking camber, gradient and alignment as per

recommendations of IRC, equipment used for subgrade preparation. Stabilization of subgrade. Types of stabilization mechanical stabilization,

lime stabilization, cement stabilization, fly ash stabilization

etc.(introduction only)

5.4 Introduction to Sub Base Course and Base Course:

a) Granular base course:

(i) Water Bound Macadam (WBM)

(ii) Wet Mix Macadam (WMM)

b) Bitumen Courses:

(i) Bituminous Macadam

(ii) Dense Bituminous Macadam (DBM)

c) *Methods of construction as per MORT&H

5.5 Surfacing:

a) * Types of surfacing

i) Prime coat and tack coat

ii) Surface dressing with seal coat

iii) Open graded premix carpet

iv) Mix seal surfacing

v) Semi dense bituminous concrete

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vi) Bituminous Concrete/Asphaltic concrete

vii) Mastic Asphalt

b) * Methods of constructions as per MORT&H specifications and quality

control.. 5.6 Rigid Pavements:

Construction of concrete roads as per IRC specifications: Form work

laying, mixing and placing the concrete, compacting and finishing, curing,

joints in concrete pavement, equipment used.

6. Hill Roads: (06 hrs)

6.1 Introduction: Typical cross-sections showing all details of a typical hill

road, partly in cutting and partly in filling

6.2 Special problems of hill areas

6.2.1 Landslides: Causes, prevention and control measures, use of

geogrids, geoflexiles, geo-synthetics

6.2.2 Drainage

6.2.3 Soil erosion

6.2.4 Snow: Snow clearance, snow avalanches, frost

6.2.5 Land Subsidence

7. Road Drainage: (06 hrs)

7.1 Necessity of road drainage work, cross drainage works

7.2 Surface and subsurface drains and storm water drains. Location, spacing

and typical details of side drains, side ditches for surface drainage.

Intercepting drains, pipe drains in hill roads, details of drains in cutting

embankment, typical cross sections

8. Road Maintenance: (06 hrs)

8.1 Common types of road failures of flexible pavements: Pot hole, rutting,

alligator cracking, upheaval - their causes and remedies (brief description)

8.2 Maintenance of bituminous road such as seal-coat, patch-work and

recarpetng. 8.3 Maintenance of concrete roads-filling cracks, repairing joints,

maintenance of shoulders (berms), maintenance of traffic control devices

9. Road Construction Equipment: (08 hrs)

Output and use of the following plant and equipment

9.1 Hot mix plant

9.2 Tipper, tractors (wheel and crawler) scraper, bulldozer, dumpers, shovels,

grader, roller, dragline

9.3 Asphalt mixer and tar boilers

9.4 Road pavers

10 Airport Engineering :- (10 hrs)

10.1 Necessity of study of airport engineering, aviation transport scenario in

India.

10.2 Factors to be considered while selecting a site for an airport with respect

to zoning laws.

10.3 Introduction to Runways, Taxiways and Apron