Historical Development of Road-Transportation Engineering

Transportation is vital for the development of road in every country.Here we are going through some milestone that changes the development of roads.

Historical development of Road

Development of road

1.3500 BC Mesapotamia

Invention of wheel and necessity of hard surface for wheeled to move,paved the way for road building

2.Roman Roads – 315 BC

Pioneers in road construction

580KM 

No cross slope or gradient

3.Pierre Tresaguet(1716-1796) in France

Father of modern highway engineering

Thickness of road can be only 30cm

Cross slope of 1 in 45 on top wearing course for surface drainage.

Shoulders also with cross slope to drain surface water to side drain

4 Metcalf method (1717-1810) in England 

Followed recommendations of robert Phillips

290Km of road in northern region of England 

His work is not recorded as he is blind

5 Thomas Telford (1757 -1834)

Founder of institution of civil engineers at london

Provided cross slope from foundation itself by varying thickness of foundation stories

Provided cross drains at intervels of about 90m

No kerb stones are used

6 John Mc adams (1756-1836)

Gave scientific method of road construction

Realised not to provide strong foundation at subgrade as wheel load of traffic gets dispersed and intensity decreases at lower layers

Surface course with stones passing 20mm sieve 

Sub grade is compacted and cross slope of 1 in 36 is provided from sub grade itself

Improvement of strength of top layers.

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SUPER ELEVATION

EXTRA WIDENING OF ROADS

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