Abstract: Embodiments of the present invention relate to a prefabricated structural beam unit for a building structure. The beam unit includes a planar sole, two laterally spaced, elongate sidewall sections, and two longitudinally spaced endwall sections. The sole, sidewall sections and endwall sections combine to define a cuboid cavity at least partially filled with a composite material, wherein at least one endwall section includes one or more structural engagement connectors dimensioned to engage with, or interlock, under gravity assistance with one or more complementary structural engagement connectors forming part of a further prefabricated building unit of the building structure. Other embodiments relate to a prefabricated structural column unit.

Abstract: The present invention relates to a prefabricated deck unit for a building system, the deck unit including: a reinforcing framework encased in a composite material, the reinforcing framework comprising: a first metal mesh unit, a plurality of interspaced spheroidal void formers attached to or in intimate contact with the first mesh unit, and a second mesh unit resting upon, or attached to, the spheroidal void formers, wherein the framework defines at least one terminal channel on at least one end of the deck unit, the terminal channel being shaped and dimensioned to snugly receive an elongate connecting rod for connecting the deck unit to a further structural element of the building system.

Abstract: The present invention relates to a building system and a method of making and assembling the building system. In particular, the present invention relates to a footing for a building structure, the footing comprises a plurality of precast concrete layers, each precast concrete layer comprising reinforcement bars and a plurality of apertures. The footing further comprises a base structure comprising a base plate and a plurality of alignment bars protruding from the base plate. The footing is configured such that when the plurality of precast concrete layers are positioned on top of one another, the plurality of alignment bars of the base structure extend through the respective apertures of each precast concrete layer. Furthermore, the present invention relates to a building structure having one or more building modules.