#### CORRELATION ANALYSIS OF UNIAXIAL COMPRESSIVE …

Strength State UCS Range (MPa) Is 50 Range (MPa) Weathering Grade Strong UCS ≥ 100 Is 50 ≥ 4 W1 Medium 50 ≤ UCS < 100 2 ≤ Is 50 < 4 W2 Weak UCS < 50 Is 50 < 2 W3 5.2. Regression Models Developed Regression models were established for UCS and (Is 50) shown in Fig. 4 to 6 for the various classified strength states. Regression model is of ...