IRC:37 Some Important Calculations

Flexible Pavement Design Expert Calculator (IRC:37-2018)

1. Design Traffic in MSA

Initial Traffic (CVPD): Annual Growth Rate (%): Design Life (Years): Vehicle Damage Factor (VDF): Lane Distribution Factor:

2. Elastic Modulus of Bituminous Layer

Indirect Tensile Strength (MPa):

3. Effective CBR of Subgrade

Existing Soil CBR (%): Borrow Material CBR (%): Proportion of Borrow Material (0 to 1):

4. Resilient Modulus of Subgrade

Effective CBR (%):

5. Tensile Strain from Fatigue Model

Number of Load Repetitions (Nf): Volume of Air Voids (Va): Volume of Effective Bitumen (Vbe): Modulus (MrM): Reliability Level: 90% 80%

6. Compressive Strain from Rutting Model

Number of Load Repetitions (Nr): Reliability Level: 90% 80%

7. Temperature Correction of Bituminous Modulus

Measured Modulus (MPa): Field Temperature (°C): Reference Temperature (°C):