Total Thickness of the subgrade layer 500 mm ( preparing 3 layer 150 , 150 , 200 mm ya 250 , 250 mm

Question

Accepted Answer

The total thickness of the subgrade layer can be prepared using either 3 layers of 150, 150, and 200 mm or 2 layers of 250 mm each.

The subgrade layer refers to the natural soil or compacted fill material beneath the pavement.
The total thickness of the subgrade layer is important for determining the overall pavement design.
The choice between using 3 layers or 2 layers depends on factors such as soil conditions, traffic loads, and design specifications.
For example, if the soil has good bearing capacity and the traffic loads are relatively light, using 3 layers of 150, 150, and 200 mm may be sufficient.
On the other hand, if the soil is weak or the traffic loads are heavy, it may be necessary to use 2 layers of 250 mm each for better stability and support.

Accepted Answer

200mm 2 times & 100mm 1 time

Accepted Answer

Total thickness of the subgrade layer 500mm(200 mm 2 time and 100 mm 1 time.

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