rafters connect directly to the core, and others to the primary can-
tilever trusses (Fig. 2.4). Slender longitudinal tubes interconnect the
partial portal frames at their knee-joints, and together with a mesh of
small-diameter tension rods, brace the framework members back to
the core.
TWO BUILDING STUDIES 9
1 2
3
4
6 5
7
4 8
9
1 2 3 4 5 6 7 8 9
Foyer
Library
Restaurant
Classrooms
Theatre
Sound studios
Corridor with
roof diaphragm
Primary propped-
cantilever truss
Portal frame
0 5 10 m
▲ 2.3 Simplified ground floor plan.
▲ 2.4 Partial portal frames span between the piers and the primary trusses or core walls.