(Solution) - With reference to the data given in Problem 54 suppose that -(2025 Original AI-Free Solution)
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With reference to the data given in Problem 54, suppose that a joint system is present. If the joints also strike due north and dip to the 45? east, find the joint cohesion needed for a safety factor or 1.5 with respect to joint shear. Note: the joints are clay-filled and have a friction angle of 18?.