I'm doing slope stability analyses on a small slope. It's under a building and never gets wet. No groundwater. The soil is slightly cemented silty sand, phi=45, c=600. The FSs are very high, as I knew they would be, but the County wants me to do the analyses, anyway.
The static FS is 6.5. The seismic FS is 3.3, with c=600. I was wondering if I should reduce c due to cyclic loading. Are there any papers on the subject of cyclic loading on weakly cemented, dry sands? I believe Nick Sitar at Cal wrote on this topic, but can't find the papers.
Just for fun, I ran the seismic analysis with c=50, and got a FS of 1.1. But I think c should be much closer to the static value of 600.
The static FS is 6.5. The seismic FS is 3.3, with c=600. I was wondering if I should reduce c due to cyclic loading. Are there any papers on the subject of cyclic loading on weakly cemented, dry sands? I believe Nick Sitar at Cal wrote on this topic, but can't find the papers.
Just for fun, I ran the seismic analysis with c=50, and got a FS of 1.1. But I think c should be much closer to the static value of 600.