“…In early guide documents for the Core-Loc unit, it was 0.60 (Turk and Melby, 1997). Although the original value recommended for the target packing density of Core-Locs was as low as 0.57, model studies of the Kaumalupau breakwater, Lanai, Hawaii (Sullivan, 2011) indicated a need to increase the packing density of the armour layer to 0.62. According to the most recent guidelines, the target values of initial packing density range from 0.616, for the largest units to 0.640, for the smallest units (see Core-Loc™ design guide table CLI, 2012).…”