A hill face slopes at an angle 40° due east. The joint set most likely to cause landslide is the one dipping at: (A) 20° due west (C)60 due east 40 (B) 30° due east (D) 65° due south-cast
THE HILL SLOPE IS 40 DEGREE EAST ONLY IF THE BED /JOINTS/UNCONFORMITY PLANE HAS A SLOPE LESS THAN THE HILL SLOPE AND IN GHE THE SAME DIRECTION LAND SLIDE WILL HAPPEN.
SO I...
THE HILL SLOPE IS 40 DEGREE EAST ONLY IF THE BED /JOINTS/UNCONFORMITY PLANE HAS A SLOPE LESS THAN THE HILL SLOPE AND IN GHE THE SAME DIRECTION LAND SLIDE WILL HAPPEN.
SO I...