Title:
STANDARD PENETRATION TESTING DEVICE
Document Type and Number:
Japanese Patent JP3811824
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a standard penetration testing device superior in convenience in use, and capable of highly accurately performing a standard penetration test.
SOLUTION: A scale 13 is installed in a vicinal position of a knocking block 4. A drive hammer 6 is set, and a guiding boring rod 5 is connected. The drive hammer 6 is lifted by the prescribed height by a hammer holder 7, and is freely dropped along the guiding boring rod 5. The scale 13 is imaged by an imaging means 8, and a preliminary driving test and/or a regular driving test are performed on the basis of image information imaged by the imaging means 8 and the impact number of the drive hammer 6.
More Like This:
Inventors:
Hitoshi Ago
Application Number:
JP2003187733A
Publication Date:
August 23, 2006
Filing Date:
June 30, 2003
Export Citation:
Assignee:
Kyoritsu Engineering Co., Ltd.
International Classes:
E02D1/02; G01N3/40; (IPC1-7): E02D1/02; G01N3/40
Domestic Patent References:
| JP5025826A | ||||
| JP58041110A | ||||
| JP2001288732A |
Attorney, Agent or Firm:
Moriyama Yo
Hirokazu Otsuka
Hirokazu Otsuka