ABSTRACT
Table SI 10.1 includes several of the parameters that would be measured for the purposes of design in rock. RQD and fracture frequency are routinely derived from measurements on rock cores taken during the ground investigation. Mass factor ; requires deformation modulus values to be taken in the field at ground surface or at underground openings, as appropriate for the future construction design, and values of Young's modulus to be derived from laboratory unconfined compressive strength tests on carefully prepared, visibly intact rock specimens. The velocity index requires field measurements to be taken of the speed of wave transmission (celerity) following the input of an impulsive disturbance, usually at ground surface, for comparison with the wave velocity obtained from ultrasonic tests on small specimens of the same visibly intact rock.
