Laserfiche WebLink
<br /> <br />C~ <br />• <br />SI.nPE MATERiAI,S <br />The Geotechnical properties of the soils <br />and rocks used for this slope stability stud•v are summarized nn <br />the chart helow. <br />Soil/VCS <br />1 Colluvium/ <br />alluvium-GM <br />2 Colluvium-GC <br />4 Colluvium <br />Ptri Angle Cohesion, Dry Wt <br />psf pcf <br />36.3 7 124 <br />12.6 376 117 <br />33 0 <br />Sat. W[. Source <br />pcf of data <br />143 I.D <br />137 <br />725 <br />5 Bowie Member 20 2000 135 <br />17 1500 135 <br />6 Rollins Sand- 50 5000 150 <br />stone, similar <br />to Bowie Sandstone <br />7 Backfill 40 7 124 143 <br />Sand Gravel & Cobble (Similar to Soil 11 which <br />has been Reinforced with GeoGrid Products (MSEI <br />LD <br />Westec <br />INO[ usedl <br />Wester: <br />LD Mod. <br />Westec <br />LU <br />The colluvial soils on this site are <br />extremely variable, containing large amounts of clays ~rnd rock <br />fragments. These colluvial soils are normally encountered in a <br />medium density condition. For purposes of this stud>•, these <br />soils are considered to be stable on the natural slopes, at the <br />existing, seasonal variable moisture conditions. It must be <br />noted that if these colluvial soils at•e saturated, probably <br />similar to ancient wetter climatic conditions, these colluvial <br />soils will become unstable in some areas. <br />6 <br />