Pavement Design Approaches:
There are two approaches of Pavement design. They are1. Empirical Approaches
- Developed empirically by observing long term performance of existing roads.
- Involves laying of large number of experimental sessions on heavily traffic roads.
- Used in UK 1490s and continued for periods of up to 30 years.
- Due to accelerated loading in some loops, lives were underestimated.
2. Theoretical approaches
- Applies theories developed through researches in University on pavement design.
- Most conferences, seminars on SDAP devoted 70 percent of their effort for this.
Pavement Design Factor
Pavement design factor are given blow1. Design life
2. Reliability
3. Traffic characteristics
4. Climatic factors
5. Road geometry
6. Subgrade strength and drainage.
7. Materials properties