Page 21 - DETERMINATION OF HARD MASSS AND ROCK MASS

CLASSIFICATION OF HARD MASS & ROCK

MASS

The provision of point load test equipment at site for
02 the abovementioned testing shall be at Contractor’s

own cost and time.
CONFIRMATION OF

HARD MASS AND The point load test apparatus shall be calibrated and a

ROCK MASS BY

MACHINERY (DIRECT valid calibration certificate shall make available to the

METHOD) S.O. upon request. Both criteria (i.e. direct method and

& indirect method) shall be fulfilled in order for the

(INDIRECT METHOD : material to be classified as hard mass or rock mass.

POINT LOAD TEST).

Confirmation test shall be carried out again when in

’
S.O.s opinion if the materials excavated are different

from the trial excavation before.