“𝑅𝑄𝐷 is computed according to ASTM 6032 as the ratio of the summed length of all “sound” pieces of intact rock core greater than 4 in. (100 mm) in length to the total length of the core run (Deere, et al., 1967).”
The segments of the “fractured” rock core are not included. So the sum of the...