Introduction: The purpose of this methodology is intended for the finding out the crust thickness along the road.
Procedure: The procedure of finding out the crust/Pavement composition are under :
- Decide the chainage from where the sample is to be taken on random basis
- The first pit shall be selected by the Independent Engineer
- Make a pit along the direction of the traffic in each stretch with regular interval of 5 km
- Make a suitable size of pit on shoulder along the movement of the traffic with the help of JCB
- After digging the pit measure the thickness of each component of the crust
- Compare this thickness from the original Crust design.
- Note down the thickness of each layer in prescribed format
- This above procedure to be adopted along the the direction of the traffic through the project end.
Road should be barricaded by the safety cone
- Two flagmen should be deployed with red flag to direct the traffic