Patent ID: 9366027
Filing Date: 2016-06-14
CPC Classification: E04B,E04C

Claim Text:
1. A lattice girder system ( 100 ), comprising primary scaffolding elements ( 7 ) comprising struts ( 1 ), tie rods ( 2 ), king posts ( 3 ), and knee rafters ( 4 ), and secondary scaffolding elements comprising ridge poles ( 5 ), purlins ( 6 ), and other rafters, using special joints ( 10 , 11 , 12 ), wherein the special joints ( 10 ) connect the struts ( 1 ) to a king post ( 3 ), the special joints ( 11 ) connect the king post ( 3 ) to a tie rod ( 2 ), and the special joints ( 12 ) connect the struts ( 1 ) to ends of the tie rod ( 2 ), and multiple joints ( 13 ) interconnect said primary and secondary scaffolding elements, wherein said knee rafters ( 4 ) are constrained to said multiple joints ( 13 ) by means of hinges whose axes are perpendicular to a plane of a truss of the lattice girder system, and wherein said multiple joints ( 13 ) feature a plurality of anchoring hinges ( 21 , 22 ) for the knee rafters ( 4 ) and are configured for selection of a hinge ( 31 ) to connect individual knee rafters as a function of the geometry of the lattice girder system, so as to concentrate an axial thrust transmitted by the individual knee rafters to every tie rod or strut ( 1 ) proximate to a neutral axis of the tie rod or strut, wherein said multiple joints ( 13 ) feature a recess ( 15 ) to permit the passage of structural elements having an axis perpendicular to a plane of a truss of the lattice girder system, wherein the structural elements comprise purlins ( 6 ).