How to say AASHTO classifications

[Miner49er]

Hi,
I am wondering how to say AASHTO classifications. For example A-7-6 (9) could be said as:
"A dash 7 dash 6 parentheses 9". But I imagine that there is a more concise way of saying it. Perhaps A 7 6 dash 9? What is typical for the spoken form of these classifications?
Thanks!

 

[TDAA]

In the example you note: A, 7, 6. You could then indicate it has a group index of 9, but that is generally more minor information.

 

[Ron]

You could say A-7-6, group index 9 or you could say clayey sand or sandy clay, unsuitable as a pavement subgrade material without remediation.