Thermally broken truss

A thermally broken truss for a cage of a structural building panel, comprising:

• at least two modular units, each modular unit including:
• elongate first and second support members defining longitudinal edge portions of the modular unit, the first and second support members being adjacent to and in spaced parallel or substantially parallel relationship with one another;
• and
• at least one connecting member which extends between the longitudinal edge portions and which interconnects the first and second members,
• each modular unit being coplanar or substantially coplanar and arranged in a spaced parallel or substantially parallel relationship with one another, the spaced relationship between the modular units defining a gap;
• a thermally insulative fastener disposed in at least part of the gap intermediate a pair of parallel modular units interconnecting the at least two modular units;
• and
• a reinforcement element reinforcing the interconnection between the or each pair of parallel modular units and the thermally insulative fastener interconnecting the at least two modular units,
• whereby the gap and the thermally insulative fastener together substantially provide a thermal break between coplanar modular units.