Page 4 - DETERMINATION OF HARD MASSS AND ROCK MASS

CLASSIFICATION OF HARD MASS & ROCK

MASS

01 Rock mass should mean fresh to moderately

weathered rock found in ledges or masses

where the excavation work depends on the
CLASSIFICATION

OF HARD MASS & machinery, equipment, and production rate as

ROCK MASS specified as Table 2.5 JKR/SPJ/2020-Section 2.

Hard mass and rock mass should exclude

individual masses less than 0.5m3 that should

be considered as common excavation.