Geometric Control factors like Topography -designspeed – design vehicle – Traffic – Capacity – volume – environment andother factors as per IRC and AASHTO standards and specifications- PCUconcept – factors controlling PCU for different design purpose
Pavement surface characteristics –friction – skid resistance – pavement unevenness- light reflectingcharacteristics – camber – objectives – types of camber – methods ofproviding cambers in the field – problems – carriage way – kerb – median –shoulder – foot path – parking lanes – service roads – cycle tracks –Driveways – Right of way – Factors influencing right of way – Design ofRoad humps as per latest I RC provisions.
Importants, types, Side distance at uncontrolledintersection, derivation, factors affecting side distance, IRC, AASHTOstandards, problems on above.
Definition, Checking the stability ofvehicle, while moving on horizontal curve, Super elevation, Ruling minimumand maximum radius, Assumptions – problems – method of providing superelevation for different curves – Extra widening of pavement on curves –objectives – Mechanical widening – psychological widening – Transitioncurve – objectives – Ideal requirements – Types of transition curve – Methodof evaluating length of transition curve – Setting the transition curve in thefield, set back distance on horizontal curve and problems on above
Gradient – Types of gradient – Design criteriaof summit and valley curve – Design of vertical curves based on SSD – OSD– Night visibility considerations – Design standards for hilly roads –problems on the above.
Principle – Atgrade and Grade separatedjunctions – Types – channelization – Features of channelising Island –median opening – Gap in median at junction.
Elements – Advantages – Disadvantages –Design guide lines – problem on the above – Grade separated intersection –Three legged inter section – Diamond inter change – Half clover leaf – cloverleaf- Advantages- Disadvantages only
Importance – sub surface drainage –surfacedrainage– Design of road side drives – Hydrological – Hydraulicalconsiderations and design of filter media, problems on above.