Environmental Engineering Reference
In-Depth Information
FIGURE 9.82
Sea erosion undercutting limestone and causing rockfalls. Slope failure could result in loss of roadway in photo
middle (Tapaktuan, Sumaytra) (see Figure 9.83 and
Figure 9.84)
.
Plane a
Plane b
FIGURE 9.83
Orientation of fracture planes controls rock mass
stability. Plane (a) represents stable conditions and
plane (b) unstable.
Surface Conditions
Seepage Points
Observations of seepage points should be made in consideration of the weather conditions
prevailing during the weeks preceding the visit, as well as the season of the year, and
