Mace Group purchased the units directly and free-issued them to the steel frame contractor, VBH JV (a joint venture ofHollandia and Victor Buyck). Some of the units were 7m x 1.5m wide which Ambar Kelly designed to incorporate horizontal fire protection and drylined fire walls as part of the RiserSafe® system. This allowed for a group of shafts, or openings, to be combined into one unit, which reduced the number of trimmer steels and concrete beams required for walls, thereby reducing crane lifts and construction time. (Courtesy of James Reid Photography.