This steel framing sits on top of the plinth that makes up the lower two levels of the Glebe project.
To keep them guessing, the geometry of the steelwork is relatively loose and its arrangement intuitive, in comparison to the orthogonal, repetitive bays of the ground and first floors.
The images are taken from the setout model, which is being used to help explain the junctions to the steel fabricators. The drawings, at the bottom of this post, are the upper and lower plans of the shop drawing set.
The steel is currently being fabricated, with the lower steel to be sent off to be galvanised in the next day or so.