I've read the chapter of R.W. DAY Geotech. Earthqk. Eng. Hanndbk. about bearing capacity, an I've a doubt.
Surely for dense (DR>65%) to very dense granular soils is applicable the rule of tumb of increase of one third the bearing capacity in seismic analisys.
And for loose (DR<35%) soils is...
In Italy will be mandatory to determine Vs30 for projects. It will be admitted the use of SPT values to deterimine Vs30.
1) I' dont understand why according to USA, Nehrp, Nspt values are not to be corrected? Neither to (N60)ER. There are other raccomandations well explained ?
2) When is...
Anybody can tell me about correlation for weak or fractured rock investigated by DP or SPT
I've found only pressuremeter menard, Plim=spt/20, from Doix & Bustamente for non fractured marl and similar.
Thanks