thread255-253888
Looking to perform a preliminary (recon level) slope stability analysis for a through-fill held up by a wall on top of a ridge of moderately weathered fractured basalt. Fractures would be 4-inches to 12-inches wide, closed, with more weathering along the fractures than within the clasts. This material can be excavated with effort by a g-pick. My idea is to treat the basalt as a Mohr/columb "soil". I am assuming (presently) no major through-going seam or joint pattern. No subsurface exploration yet. I am thinking that this would have a friction angle considerably better than that of a well graded, dense compacted gravel, say over 45 deg.
Does anyone out there have guidance on what value to use? Any accepted publications or tables?
Looking to perform a preliminary (recon level) slope stability analysis for a through-fill held up by a wall on top of a ridge of moderately weathered fractured basalt. Fractures would be 4-inches to 12-inches wide, closed, with more weathering along the fractures than within the clasts. This material can be excavated with effort by a g-pick. My idea is to treat the basalt as a Mohr/columb "soil". I am assuming (presently) no major through-going seam or joint pattern. No subsurface exploration yet. I am thinking that this would have a friction angle considerably better than that of a well graded, dense compacted gravel, say over 45 deg.
Does anyone out there have guidance on what value to use? Any accepted publications or tables?