Is TCP test required for pavement design?

[abih]

I really appreciate someone who had this experience share with me. As you know, TCP instead of other field tests is required for bridge foundation design per TxDOT Geotechnical Design Manual. However, is TCP also <required> simply for pavement analysis? Thanks.

 

[Ron]

There are several methods recommended in the TxDOT Pavement Design Manual but nothing is "required". You are required to do investigation necessary to characterize the subgrade soils and moisture conditions.