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For the design of pavements to carry traffic in the range of 1 to 10 msa, use
chart 1 and for traffic in the range 10 to 150 msa, use chart 2 of IRC:37 2001.
The design curves relate pavement thickness to the cumulative number of
standard axles to be carried over the design life for different sub-grade CBR
values ranging from 2 % to 10 %.
The design charts will give the total thickness of the pavement for the above
inputs.
The total thickness consists of granular sub-base, granular base and bituminous
surfacing.
The individual layers are designed based on the the recommendations given below
and the subsequent tables.
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