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what is the minimum value of CBR.

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what is the minimum value of CBR.
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Min. CBR Value is 6. If the value for subgrade is less than 4, 300mm thick bolder solling is required (Base Corse). If the value for subgrade is less than 6, 75mm thick Jahama solling is required (Base Corse). If the value for subgrade is greater than 10, no treatment is required.
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