HIGHWAY ENGINEERING( Part 1)
(
Geometric Design of Highway
A highway has many visible dimensions and the design of visible dimensions is known as Geometric design.
Factor Controlling Geometric Design
1. Topography 2. Design speed 3. Road User Characteristics 4. Vehicle characteristics 5. Traffic 6. Traffic capacity 7. Environmental considerations.
1. Topography 2. Design speed 3. Road User Characteristics 4. Vehicle characteristics 5. Traffic 6. Traffic capacity 7. Environmental considerations.
Cross Sectional Element
Right of way, Width of formation, Road margins, Meridans, Kerbs, Width of pavement or carriageway, camber.
ROAD CROSS SECTION DETAILS
Right of way, Width of formation, Road margins, Meridans, Kerbs, Width of pavement or carriageway, camber.
ROAD CROSS SECTION DETAILS
- Right of way- The width of acquired land and it's depends on the importance of the road and it's future development.
2. Minimum width of the shoulder recommended by IRC 2.5 m.
3. Parking Lane- The width of the parking lane is 3 m.
4. Lay Bay- The width of the lay bay is 3 m and length is 30 m.
5. Cycle Track- The width of the cycle track 2 m or increase by 1 m each cycle lane.
6. Drive Way- These are used to connect the highways with commercial establishment like fuel stations, service-stations etc.
7. Footpath- These are provided in urban roads having heavy vehicular as well as pedestrian traffic, to provide the protection to pedestrian.
8. Guard Rail- These are provided edge of the shoulder when road is constructed on fill to pavement vehicles from running off the embankment. This is provided better night visibility on the curves under high light visibility.
GAURD RAIL
9. Median- A road on which traffic in one direction of travel is separated from that in the opposite direction is called a divided highway and the divided strip in the middle of the highway is called median.
10. Kerb- A vertical or sloping member along the edge of a provided for supporting raised footpaths or central meridian is called kerb.
11. Camber- Traverse slope is provided to the road to drain off rain water from road surface is known as Camber.
CAMBER
1. single lane 3.75 m
2. Two lanes without raised kerbs 7.0 m
3. Two lane with raised kerbs 7.5 m
4. Intermediate carriageway 5.5 m
5. Multi-lane pavements 3.5 m per lane.
*Maximum permissible width of vehicle as per IRC specification is 2.44.
3. Parking Lane- The width of the parking lane is 3 m.
4. Lay Bay- The width of the lay bay is 3 m and length is 30 m.
5. Cycle Track- The width of the cycle track 2 m or increase by 1 m each cycle lane.
6. Drive Way- These are used to connect the highways with commercial establishment like fuel stations, service-stations etc.
7. Footpath- These are provided in urban roads having heavy vehicular as well as pedestrian traffic, to provide the protection to pedestrian.
8. Guard Rail- These are provided edge of the shoulder when road is constructed on fill to pavement vehicles from running off the embankment. This is provided better night visibility on the curves under high light visibility.
GAURD RAIL
9. Median- A road on which traffic in one direction of travel is separated from that in the opposite direction is called a divided highway and the divided strip in the middle of the highway is called median.
10. Kerb- A vertical or sloping member along the edge of a provided for supporting raised footpaths or central meridian is called kerb.
KERB
11. Camber- Traverse slope is provided to the road to drain off rain water from road surface is known as Camber.
CAMBER
- Width of Pavement or carriageway-
1. single lane 3.75 m
2. Two lanes without raised kerbs 7.0 m
3. Two lane with raised kerbs 7.5 m
4. Intermediate carriageway 5.5 m
5. Multi-lane pavements 3.5 m per lane.
*Maximum permissible width of vehicle as per IRC specification is 2.44.
I am a Civil Engineer and knowledgecivilengineer.blogspot.com is my blog about the basic knowledge of Civil Engineering.Here, you can learn the questions and answers of interview for a civil engineer.
ConversionConversion EmoticonEmoticon