Because the rocks in the Group 7 and 8 when the slope soil erosion occurs, are not present in a soil erosion characteristics analysis dealing so the stone will not be considered in this group.
The stone in the seventh and eighth on the sloped ground was broken in the crash will not be a landslide, so the analysis does not take into consideration the stone.
Because the rock group and 7 8 when the slope was broken will not be broken a landslide characteristics. Therefore, the analysis would not bring the rock in this group to consider.