Joints: joint are defined as a fracture in rock where there has been no lateral movement in the plane of the fracture (up, down or sideway) of one side relative to the other.
Classification of joints:
a) Spatial joints
i) Systematic joints (regular joints)
ii) Non- systematic (irregular) joint
b) Geometry
i) strike joints, ii) Dip joints, iii) Oblique joints.
c) Origin
i) Tension joints, ii) Shear joints, iii) Compression joints