A building structure including a first building member and a second building member may be connected by a plurality of fasteners, each fastener having a head, a threaded portion having a through hardness of between HRB 70 and HRC 40, a thread-forming portion of at least HRC 50 hardness enabling the fastener to form threads in at least the second steel building member, and a fluted lead portion of at least HRC 50 hardness with a nominal diameter between 70 and 95% of major diameter, such that the fastener is capable of providing a ratio of strip torque to thread-forming torque of at least 3.0 and a ratio of strip torque to drive torque greater than 6.0 when the second steel building member having a thickness of 0.25 inch and the fluted lead portion having at least one diameter within nominal diameter between 80 and 98% of major diameter.

A metal truss assembly comprises a plurality of C-shape structural members including at least one chord member and two or more adjacent web members, each structural member having a base and two opposing flanges. The at least one C-shape chord member has flanges extending from each side of the base with one flange having cutouts to receive two C-shape web members with a part of said flange of said chord member in place between said cutouts. Each said C-shape web member is placed into one of the cutouts in said flange to intersect the at least one chord member with the bases of the two C-shape web members adjacent the base of the at least one chord member.

A metal truss assembly comprises a plurality of C-shape structural members including at least one chord member and two or more adjacent web members, each structural member having a base and two opposing flanges. The at least one C-shape chord member has flanges extending from each side of the base with one flange having cutouts to receive two C-shape web members with a part of said flange of said chord member in place between said cutouts. Each said C-shape web member is placed into one of the cutouts in said flange to intersect the at least one chord member with the bases of the two C-shape web members adjacent the base of the at least one chord member.

A metal truss assembly comprises a plurality of C-shape structural members including at least one chord member and two or more adjacent web members, each structural member having a base and two opposing flanges. The at least one C-shape chord member has flanges extending from each side of the base with one flange having cutouts to receive two C-shape web members with a part of said flange of said chord member in place between said cutouts. Each said C-shape web member is placed into one of the cutouts in said flange to intersect the at least one chord member with the bases of the two C-shape web members adjacent the base of the at least one chord member.

A metal truss assembly comprises a plurality of C-shape structural members including at least one chord member and two or more adjacent web members, each structural member having a base and two opposing flanges. The at least one C-shape chord member has flanges extending from each side of the base with one flange having cutouts to receive two C-shape web members with a part of said flange of said chord member in place between said cutouts. Each said C-shape web member is placed into one of the cutouts in said flange to intersect the at least one chord member with the bases of the two C-shape web members adjacent the base of the at least one chord member.

A beam system and method of erecting a supporting arch enables large roofed structures to be erected quickly and economically. The method includes aligning a plurality of structural elements longitudinally; connecting upper corners of the structural elements to upper corners of adjacent structural elements, wherein adjacent lower corners of the structural elements remain unconnected; elevating first and second structural elements in a middle of the supporting arch; connecting lower corners of the first and second structural elements together; elevating third and fourth structural elements adjacent the first and second structural elements, respectively; and connecting lower corners of the third and fourth structural elements to lower corners of the first and second structural elements, respectively.

A long-span corridor comprising two sets of floor cantilevered inclined trusses combined with suspension cable bearing is provided, including floor cantilevered inclined trusses, floor double-arch trusses, radial circumferential connecting structures, V-shaped support structures, corridor truss structures and suspension cable bearing structures; two trapezoidal tapering planar inclined trusses of each set of floor cantilevered inclined trusses are connected to each other through a combination of the floor double-arch trusses and through the radial circumferential connecting structures to form a single-set system; and the corridor truss structures are arranged between the two single-set systems. The present disclosure has the following beneficial effect: the complicated long-span steel corridor truss structure of of the bottom large-space multi-side and multi-point floor long cantilevered inclined truss and middle long-span region suspension cable bearing combined architectural modeling can be implemented, and this structure can full play the advantages of the bottom large-space and multi-way long-span.

A long-span corridor comprising two sets of floor cantilevered inclined trusses combined with suspension cable bearing is provided, including floor cantilevered inclined trusses, floor double-arch trusses, radial circumferential connecting structures, V-shaped support structures, corridor truss structures and suspension cable bearing structures; two trapezoidal tapering planar inclined trusses of each set of floor cantilevered inclined trusses are connected to each other through a combination of the floor double-arch trusses and through the radial circumferential connecting structures to form a single-set system; and the corridor truss structures are arranged between the two single-set systems. The present disclosure has the following beneficial effect: the complicated long-span steel corridor truss structure of of the bottom large-space multi-side and multi-point floor long cantilevered inclined truss and middle long-span region suspension cable bearing combined architectural modeling can be implemented, and this structure can full play the advantages of the bottom large-space and multi-way long-span.

A metal truss assembly comprises a plurality of C-shape structural members including at least one chord member and two or more adjacent web members, each structural member having a base and two opposing flanges. The at least one C-shape chord member has flanges extending from each side of the base with one flange having cutouts to receive two C-shape web members with a part of said flange of said chord member in place between said cutouts. Each said C-shape web member is placed into one of the cutouts in said flange to intersect the at least one chord member with the bases of the two C-shape web members adjacent the base of the at least one chord member.

A metal truss assembly comprises a plurality of C-shape structural members including at least one chord member and two or more adjacent web members, each structural member having a base and two opposing flanges. The at least one C-shape chord member has flanges extending from each side of the base with one flange having cutouts to receive two C-shape web members with a part of said flange of said chord member in place between said cutouts. Each said C-shape web member is placed into one of the cutouts in said flange to intersect the at least one chord member with the bases of the two C-shape web members adjacent the base of the at least one chord member.