| contributor author | T. Leslie Youd | |
| contributor author | Hannah W. Bartholomew | |
| contributor author | Jamison H. Steidl | |
| date accessioned | 2017-05-08T21:29:11Z | |
| date available | 2017-05-08T21:29:11Z | |
| date copyright | March 2008 | |
| date issued | 2008 | |
| identifier other | %28asce%291090-0241%282008%29134%3A3%28397%29.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/53307 | |
| description abstract | Automatic trip hammers have advantages for standard penetration test (SPT) of consistent drop height and low friction loss during hammer fall. These advantages, however, generate high energy transfer ratios (ER), typically about 90%. This efficiency causes lower sensitivity and higher energy correction coefficients, | |
| publisher | American Society of Civil Engineers | |
| title | SPT Hammer Energy Ratio versus Drop Height | |
| type | Journal Paper | |
| journal volume | 134 | |
| journal issue | 3 | |
| journal title | Journal of Geotechnical and Geoenvironmental Engineering | |
| identifier doi | 10.1061/(ASCE)1090-0241(2008)134:3(397) | |
| tree | Journal of Geotechnical and Geoenvironmental Engineering:;2008:;Volume ( 134 ):;issue: 003 | |
| contenttype | Fulltext | |