Question: Uniaxial Compressive Strength ( UCS ) : 7 5 MPa Geological Strength Index ( GSI ) : 2 8 mi ( Material Constant for Sandstone

Uniaxial Compressive Strength (UCS): 75 MPa
Geological Strength Index (GSI): 28
mi (Material Constant for Sandstone): 17
Disturbance Factor (D):Assume good blasting practices.
Young's Modulus (Ei): 20,675 MPa
Unit Weight of Rock: 0.027 MN/m^3
Tunnel Depth: 300
Application: Tunnel analysis

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