أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Differ with types of test.
For FDT need to take sample upto20cm depth
For bore hole =8-10 m
8 -10 mtrs
The compaction test starts from six inches below the top. Whereas different tests requie different depths.