# How flexible pavement is design by CBR method?

How flexible pavement is design by CBR method? Flexible Pavement Design by California Bearing Ratio (CBR) Method Flexible pavement design by CBR method is used to determine the total thickness of pavement. Calculation of total

## How flexible pavement is design by CBR method?

Flexible Pavement Design by California Bearing Ratio (CBR) Method

1. Flexible pavement design by CBR method is used to determine the total thickness of pavement.
2. Calculation of total thickness (T):
3. Calculation of sub base course thickness (tsb):
4. Calculation of total thickness (T):

What is CBR in flexible pavement?

The California Bearing Ratio (CBR) is a measure of the strength of the subgrade of a road or other paved area, and of the materials used in its construction. The ratio is measured using a standardized penetration test first developed by the California Division of Highways for highway engineering.

### What are the applications of CBR test in flexible pavement design?

The california bearing ratio test is penetration test meant for the evaluation of subgrade strength of roads and pavements. The results obtained by these tests are used with the empirical curves to determine the thickness of pavement and its component layers.

Why is CBR of sub grade important in flexible pavement design?

Hence we can conclude that Cbr is good for simple and light traffic roads where in depth investigation of materials and subgrade is not very important. Hence Cbr based design can be declared as Reliable for light traffic roads.

## Why CBR test is important?

The purpose of doing a CBR test is to find out the California Bearing Ratio (CBR) of a material which has to be used for the subgrade of flexible pavements. We can read the required thickness for which we need to design the subgrade layer if we know the CBR of our material and the design traffic.

What is the advantage of CBR?

Advantages and disadvantages of CBR Further, CBR is intuitive because it reflects how people work. Because no knowledge must be elicited to create rules or methods, development is easier. Another benefit is that systems learn by acquiring new cases through use, and this makes maintenance easier.

### What is the importance of CBR test?

The purpose of doing a CBR test is to find out the California Bearing Ratio (CBR) of a material which has to be used for the subgrade of flexible pavements. The actual quantity that concerns the strength of the subgrade material is Resilient Modulus though.