This standard specifies a penetration test method that uses a Dutch double-tube cone penetration tester to determine the cone penetration resistance to determine the hardness, softness, compaction, and composition of soil layers in situ.
JIS A 1220:2001 history
2013JIS A 1220:2013 Method for mechanical cone penetration test
2001JIS A 1220:2001 Method for Dutch double-tube cone penetration test
1995JIS A 1220:1995 Method for Dutch double-tube cone penetration test