A system includes an anchor body comprising a head and a hollow chamber shaft coupled to the head. The system also includes a housing sleeve configured to support the anchor body. The housing sleeve includes one or more fasteners pre-threaded into a base of the housing sleeve, and the housing sleeve comprises an arch configured to adapt to a ridge of a metal deck.

A metal beam with asymmetric section and damage warning function includes a main body; the cross-sectional shape of the main body section defines a neutral axis, and a pressure zone and a tension zone when subjected to a pure bending moment load. Each point of the main body is arranged in a linear relationship with respect to the neutral axis within the elastic range. The cross-sectional shape of the main body section is on both sides of the neutral axis in an asymmetrical arrangement. The section modulus of the pressure zone of the main body section at the maximum bending moment is greater than the section modulus of the tension zone. Before the pressure zone bears a stress reaching the elastic limit to yield and enter plastic deformation, the tension zone has a stress exceeding the elastic limit and yield to enter plastic deformation first, so that the plastic deformation of the yielding tension zone provides a warning about a possibly occurring compressive shear damage of the pressure zone, forming the present invention.

Embodiments of the invention included structural decking systems with at least a four-layered seam and methods for manufacturing and assembling structural decking systems with at least four-layered seams. The decking panels may be provided with an edge having an exposed “male lip” with two layers, and an opposite edge having a “female lip” with two layers. Individual panels may be coupled together by placing the female lip of a first panel over the male lip of an adjacent panel, thus creating an unjoined seam. In order to couple the panels together, the panels may be secured through various couplings configurations. The couplings may be formed by deforming, cutting, and/or welding the seam. Not only do the couplings help prevent vertical separation between adjacent panels, the couplings minimize lateral shifting along the seam, and ensure a desired level of shear strength in the seam and across the structural decking system.

Provided is a deck panel for construction, including: an upper side deck panel which includes an upper side deck plate, an upper side truss girder which is disposed on the upper side deck plate, and an upper side reinforcement part which is coupled to the upper side deck plate or the upper side truss girder; a lateral side deck panel which includes a lateral side deck plate, a lateral side truss girder which is disposed on the lateral side deck plate, and a lateral side reinforcement part which is coupled to the lateral side deck plate or the lateral side truss girder, and is disposed on at least one lateral side of the upper side deck panel; and a coupling member which fixes the upper side deck panel and the lateral side deck panel.

Provided is a deck panel for construction, including: an upper side deck panel which includes an upper side deck plate, an upper side truss girder which is disposed on the upper side deck plate, and an upper side reinforcement part which is coupled to the upper side deck plate or the upper side truss girder; a lateral side deck panel which includes a lateral side deck plate, a lateral side truss girder which is disposed on the lateral side deck plate, and a lateral side reinforcement part which is coupled to the lateral side deck plate or the lateral side truss girder, and is disposed on at least one lateral side of the upper side deck panel; and a coupling member which fixes the upper side deck panel and the lateral side deck panel.

Presently disclosed is a standoff fastener for use in a compound floor structure. The threaded fastener includes a threaded standoff portion designed to accept a nut which has a diameter larger than a head portion of the standoff fastener. The head portion is located centrally within the fastener in order to reduce a tendency of the fastener to pivot within a driver during the fastening process.

A building floor structure and a process for constructing the building floor structure comprising two or more spaced-apart beams, each beam comprising an upwardly facing support surface on at least one side of the beam; and one or more frameworks positioned between and adjacent two of the two or more spaced-apart beams, each of the one or more frameworks having two side regions, each side region comprising a downwardly facing bearing surface adapted to be received on the upwardly facing support surface of the respective beam.

A building floor structure and a process for constructing the building floor structure comprising two or more spaced-apart beams, each beam comprising an upwardly facing support surface on at least one side of the beam; and one or more frameworks positioned between and adjacent two of the two or more spaced-apart beams, each of the one or more frameworks having two side regions, each side region comprising a downwardly facing bearing surface adapted to be received on the upwardly facing support surface of the respective beam.

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 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.