# Topics

## Extrawidening 2.19

ExtraWidening: Extra width provide to Road at horizontal curve is called extrawidening. It is provided for following purposes: To avoid off tracking

## Method of Obtaining Superelevation & Radius of Horizontal Curve 2.18

Method of Obtaining Superelevation: Introducing superelevation on a horizontal curve in the field is an important feature in construction. The full super-elevation

## Design of Superelevation 2.17

Design of  Superelevation⇒ Design of superelevation is a complex problem for mixed traffic conditions because different vehicles are moving with different speed

## Equilibrium Superelevation & Superelevation As Per IRC 2.16

Equilibrium Superelevation: Equilibrium superelevation is that superelevation at which pressure at the inner and outer tyre will be equal. if the coefficient

## Superelevation & Analysis for Expression of Superelevation 2.15

Superelevation: The transverse inclination throughout the length of horizontal curve by raising outer edge counteract w.r.t. inner edge, in order to counteract

## Stability Analysis on Horizontal Curve without Superelevation 2.14

Stability Analysis on Horizontal Curve without Superelevation: It is the curve in plane to provide change in the direction to Central line

## Design of Horizontal Alignment & Design Speed 2.13

Design of Horizontal Alignment: Various design element to be considered in the horizontal alignment are: Design speed Type and length of transition

## Curve, Type of Curves & Advantages of Curves 2.12

Curve: Curves are provided in highways in order that the change of direction at the intersection of straight alignments either in horizontal

## Intermediate Sight Distance And Sight Distance At Intersections 2.11

Intermediate sight distance (ISD): On a horizontal curve, the requirement of overtaking sight distance can not always be satisfied. In such cases

## Overtaking Sight Distance 2.10

Overtaking Sight Distance (OSD): If all the vehicle ply on the road at the design is speed, then theoretically there would be

## Stopping Sight Distance 2.9

Stopping Sight Distance (SSD): The minimum distance visible to a driver ahead to safety stop a vehicle travelling at design speed without

## Sight Distance And Following Factors Of Sight Distance 2.8

Sight Distance: Sight distance is the length of road visual a head to the driver at any distance. ( it is considered

## Roadway / Width of Formation & Right of Way / Road Land 2.7

Roadway / Width of Formation: It is the sum of with pavement or carriageway including separator (if any) and the shoulder. Roadways

## Shoulder & Road Margin 2.6

Shoulder: Extra width provided adjacent to edge of pavement is called shoulder. It is provided for emergency point of view like Breakdown

## Divider /Medians / Traffic separators And Kerb 2.5

Divider /Medians / Traffic separators Divider is an element provided to Road along the center line to separate two way traffic. The

## Camber / Cross- Slope & Width of Pavement or Carriageway 2.4

Camber / Cross- Slope: It is the slope provide to the road surface in the transverse direction to drain the rainwater from

## Pavement Surface Characteristic 2.3

Pavement surface characteristic Pavement surface characteristic depends upon pavement type. Which in turn depends on availability of material, cost, composition of traffic,

## Elements Of Highway Geometric Design & Cross-Section Elements 2.2

Elements Of Highway Geometric Design: In Geometric design of highway deals with following elements like Cross-section element, Sight distance, Horizontal alignment details,

## Geometric Design Of Highway And Factor Controlling Geometric Design 2.1

Geometric design of highway: Geometric design of highway deals with the all the dimensions and layout of visual features of highway such

## Engineering Surveys For Highway Alignment & Maximum Saturation System / Utility Factor System 1.5

Engineering Surveys For Highway Alignment: In order to decide the or finalized the Probable Alignment following Surveys are being carried out: Map