That depends on soil type.
W6[# q%o b];? tP If for real prohject, do not guess, you should use the result from test. This is very fundmental parameter for soil.
D,Jyb0BW ~}fQ.F*7R 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 ]