That depends on soil type.
Ls&+XlrX8 ,zQo {. If for real prohject, do not guess, you should use the result from test. This is very fundmental parameter for soil.
U1OFDXHG c\At0.QCA If you just input some number for prastice, you can pick number from your Geotechnical book.
[ 此贴被mano在2007-09-02 16:58重新编辑 ]