Patent ID: 7389621

Claim:
A system including a plurality of types of modular structural components for construction of structures, each structural component including a plurality of structural elements, the structural elements comprising: chords, each chord including a generally elongated main body having generally square cross section defined by four main walls surrounding a central bore and having four interior main surfaces and four exterior main surfaces, and a T-slot structure extending along and centered on each exterior main surface, each T-slot structure having an interior T-slot including a shaft slot extending inwards from an outer surface of the T-slot structure and connecting with a cross slot extending at a right angle to the shaft slot at an inner end of shaft slot and each T-slot structure defined by two parallel slot side walls extending outwardly in parallel from the exterior main surface of the chord and by two slot face walls extending inwardly from the outer edges of the slot side walls and parallel to the exterior main surface fo the chord, and forming strips, each forming strip including a single generally elongated strip plate formed into a plurality of strip segments, each strip segment being oriented at a right angle with respect to an adjacent strip segment and the strip segments being formed into regions including, in succession, a corner region forming a w-shaped cross section forming bearing surfaces mating with corresponding chord bearing surfaces formed by two adjacent main walls and an adjacent slot side wall of a T-slot structure, a face region forming a bearing surface mating with chord bearing surfaces formed by outer face surfaces of the T-slot structure face walls, and an attachment region extending outwards from an edge of the face region for stiffening of the forming strip.