This document contains technical specifications and design plans for a truss system with 15 trusses spaced at 600mm. The trusses are made of T26 grade timber and include jack rafters, purlins, binders, and floor joists. Fastening components like truss clips, framing anchors, and restraint straps are specified. Dimensions, spacing, and loading information is provided along with notes indicating this is a preliminary design and the overall structure stability is the responsibility of the building designer.