The Jewel consists of three towers. The central tower is the highest at 47 floors and 170 metres tall while the other two are 41 and 34 floors respectively. The development also includes three levels of basement parking.
The lateral system of each building consists of primary reinforced concrete shear wall core with additional shear walls. To maintain the load-path and redistribute gravity and lateral loads from the discontinued columns and walls of the residential part to the basement level, the transfer slab was introduced. This two-metre-thick slab is a reinforced concrete slab, which carries the load of all the floors situated above it and transfers it to the ground through columns.
ADJUSTA joint reinforcement was installed in the slab-to-core connections via climbing formwork to enable continuity of reinforcement between the concrete members. The majority of the ADJUSTA connections on the project were 16mm diameter threaded anchors at 200mm spaced increments between the connections. The deep transfer slabs on the 3rd level carried ADJUSTA 25mm connections at 100mm spaced increments (and in some instances 3 rows) around the core’s perimeter.
Initially, the ferrule anchors, inserted into the rebate former boards, are cast into the walls. When the concrete has cured, the rebate former board is removed for the second stage installation of the threaded rebars into the anchors. These rebars overlap with the main reinforcement of the in-situ poured concrete slab.
Project details
Project: Jewel Towers, Gold Coast, Australia (47, 41 and 34 Floors)
Developer: Yuhu Group Australia
Architect: DBI Design
Structural Designer: Arcadis
Construction: Multiplex
Completion: 2018
Products: Rebar Starters
