[GATE NOTES] Transportation Engineering GATE, IES, Govt Exams - Handwritten Notes

TRANSPORTATION ENGINEERING

GATE – IES – GOVT EXAMS – HANDWRITTEN NOTES

ACE ACADEMY TRAINING NOTES

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ABOUT THE BOOK

TITLE : TRANSPORTATION ENGINEERING – GATE/IES EXAM HANDWRITTEN MATERIAL

SUBJECT : TRANSPORTATION ENGINEERING

IDEAL FOR : GATE,IES, PSU’S – CIVIL ENGINEERING, TSPSC, OTHER CIVIL ENGINEERING GOVERNMENT SECTOR EXAMS.

CONTENTS : ALL THE TOPICS UNDER GATE/IES TRANSPORTATION ENGINEERING SYLLABUS

Contents :

Highway development and planning
Highway alignment
Highway geometric design basic elements
Highway geometric design gradients
Sight distances
Overtaking sight distances
Horizontal curves
Extra widening
Set back distance
Transition curves
Vertical curves
Valley curves
Traffic engineering
Highway materials and testing
Pavement design
Rigid pavements

Romans are the pioneers in road construction. 29 roads meet in Rome. First British road is GT from Calcutta to Delhi.

Chronology of development :

Treasagat construction
Metcalf construction
Telford construction
Macadam construction

Highway development in India :

Jayakar committee – 1927
Central road fund – CRF 1929
Indian road Congress – IRC – 1934
Motor vehicles act – 1939
Nagpur road conference – 1943-1963
Central road research institute – CRRI 1950
National highway act – 1956
Second road development plan – 1961-1981 (Bombay road plan)
Highway research board of IRC – 1973
Third twenty year plan act 1981-2001 (Lucknow plan)
National highway authority of India – NHAI
National highway development program – NHDP

Projects under NHDP :

Golden Quadrilateral Delhi-Kolkata-Chennai-Mumbai
North south corridor – Srinagar-Kanyakumari
East west corridor – Silchar-Porbandar
Port connectivity and others.
Constructions are based in BOT system (Build operate transfer) Contractors will build the roads, operate it and transfer it to government finally.
State highway research laboratories
Highway staff training institute
National rural road development agency-NRROA

Gradient – Ground slope along road

Type of gradients :

1. Ruling gradient :
also known as ‘Design gradient’
gradient in road during normal course
speed of vehicle should not decrease whole moving on gradient

2. Limiting gradient
maximum gradient steeper than ruling gradient for restricted length.

3. Exceptional gradient
gradient steeper than limiting gradient
used in short stretched only
in exceptional situations

4. Minimum gradient – based on road drainage requirements