http://books.google.it/books?id=X8hEt3l1SPQC&pg=PA428&lpg=PA428&dq=undrained+strength+at+large+strains+(USALS)&source=bl&ots=4GfbXbsIvk&sig=N7u2wR9FCUJN45bKOZq10tSiNns&hl=it&ei=bynyTIDRM4yVOrmXtIIK&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBYQ6AEwAA#v=onepage&q=undrained%20strength%20at%20large%20strains%20(USALS)&f=false

undrained strength at large strains (USALS) should be used instead of the peak strength from UU test

michele conti
fatti non foste per viver come bruti ma per seguir virtute e conoscenza