Nucor Corporation

Other

Asia Fastening (us), Inc.

David Lee Samuelson

Lionel Edward Dayton

Glenn Wayne Studebaker

Richard W Lukes

Embodiments of the present invention provide systems for connecting a flooring system to a vertical wall. In one embodiment the building structure includes a floor comprising a cementitious slab and a wall supporting at least a portion of the cementitious slab. A plurality of stand-off fasteners extend from the top of the wall into the cementitious slab and are configured to transfer forces between the cementitious slab and the wall. The stand-off fasteners comprise a lower portion and an upper stand-off portion. The lower portion is operatively coupled to the top of the wall, and the upper stand-off portion extends above the top of the wall and is encapsulated within the cementitious slab. In some embodiments, at least a portion of the lower portion is heat treated to a higher degree of hardness relative to the remainder of the stand-off screw.

Composite joist floor system

A building structure comprising a support structure having upper portion extending to adjacent a floor structure above the support structure and adapted to receive stand-off fasteners there along, a plurality of stand-off fasteners each having a lower portion and an upper portion, where the lower portion of the stand-off fasteners comprises a self-drilling end portion and an adjacent thread-forming portion and, when installed into the upper portion of the support structure, at least a portion of the upper portion of each stand-off fastener extends significantly above the upper portion of the support structure, a cementitious wall structure formed above the upper portion of the wall structure with the upper portions of the stand-off fasteners encapsulated in the cementitious wall structure.

Composite wall system

Embodiments of the present invention provide systems for connecting a flooring system to a vertical wall. In one embodiment the building structure includes a floor comprising a cementitious slab and a wall supporting at least a portion of the cementitious slab. A plurality of stand-off screws extend from the top of the wall into the cementitious slab and are configured to transfer forces between the cementitious slab and the wall. The stand-off screws comprise a lower screw portion and an upper stand-off portion. The lower screw portion is drilled into the top of the wall, and the upper stand-off portion extends above the top of the wall and is encapsulated within the cementitious slab. In some embodiments, at least a portion of the lower screw portion is heat treated to a higher degree of hardness relative to the remainder of the stand-off screw.

The composite joist floor system includes joists supporting metal decking and a stand-off fasteners are spaced along the length of the joist Each fastener has an upper portion with a through hardness between HRB 70 and HRC 40 and a lower portion having a threaded portion with a through hardness of between HRB 70 and HRC 40 and a thread-forming portion adjacent the threaded portion with at least a HRC 50 hardness and failure torque to thread-forming torque of at least 3.0 and a drive torque at least 20% less than a thread-forming torque, and a fluted lead portion adjacent the thread-forming portion with a nominal diameter between 70 and 95% of major diameter of the threaded portion adapted to form a fastener opening. These stand-off fasteners extend into and are encapsulated by a cementitious slab supported by the metal decking to form a composite floor system.

A joist support system including a joist having a joist seat at least at one end, each joist seat having a first portion fastened to an upper chord of the joist and a second portion adapted to engage a support structure and support the joist and a bearing load, and a second steel plate welded to the main steel plate extending downwardly from the main steel plate between the first and second portions, the second steel plate fastened with an upward support portion to an end portion of the joist extending inwardly adapted to resist transfer load on the joist seat, and a support structure adapted to support the one end of the joist by a portion of the joist seat.

Flush joist seat

The composite joist floor system includes joists supported by supporting members. Corrugated steel decking is positioned over the joists such that the corrugations are substantially perpendicular to the joists. Self-drilling, self-tapping, stand-off screws are spaced along the length of the joist, aligned with the deck corrugations. These stand-off screws provide the required shear transfer between the joist and concrete slab to form a composite floor system. The placed concrete encapsulates the upper non-threaded shank portions of the stand-off screws and the end of the joists. After the concrete has cured, the resultant system comprised of steel joists, steel decking, stand-off screws, and concrete, act together to form a composite system with greater load carrying capacity and less vertical deflection. The stand-off screws connect the joist upper chords to the concrete slab allowing the joist and concrete slab to act as a unit, by transferring shear between the two joined components.

Systems are provided for use in balcony structures. The system includes a joist comprising an upper chord and a lower chord separated by a web. One end of the joist is supported by a supporting member and a cantilevered balcony extends generally perpendicularly from the supporting member. The cantilevered balcony comprises a cementitious balcony slab extending from a cementitious floor slab. The cementitious floor slab includes a backspan region extending from the top of the supporting member opposite the cementitious balcony slab. A portion of the joist in the backspan region comprises a decking supporting member coupled to the web. The joist in the backspan region supports decking using the decking supporting member; however, the joist beyond the backspan region supports decking above the upper chord. In this way, the cementitious floor slab in the backspan region is thicker than the cementitious floor slab beyond the backspan region.

Balcony structure

A support structure is provided for supporting the one end of a floor joist using a flush joist seat. The flush joist seat generally includes a generally horizontal plate having a first portion, a second portion, and a third portion. The first portion is welded to the top of the floor joist and the third portion rests on the top of the support structure. The second portion is located beyond the end of the floor joist, between the first portion and the second portion. A generally vertical plate extends downward from the second portion of the generally horizontal plate and is welded to a portion of the end of the floor joist.

A mechanical header is provided for spanning a corridor in a building and for hanging mechanical equipment therefrom. The mechanical header includes a first angle member comprising a first horizontal portion and a first vertical portion, where the first horizontal portion extends away from the first vertical portion in a first direction. The mechanical header further includes a second angle member comprising a second horizontal portion and a second vertical portion, where the second horizontal portion extends away from the second vertical portion in a direction opposite the first direction. A spanning beam is coupled to the first vertical member and to the second vertical member. The first horizontal portion is configured to rest on top of a first wall structure, and the second horizontal portion is configured to rest on top of a second wall structure, such that spanning beam spans the corridor and hangs just at or below the level of the top of the first and second wall structures.

Mechanical header

Systems are provided for use in balcony structures. The system includes a joist comprising an upper chord and a lower chord separated by a web. One end of the joist is supported by a supporting member and a cantilevered balcony extends generally perpendicularly from the supporting member. The cantilevered balcony comprises a cementitious balcony slab extending from a cementitious floor slab. The cementitious floor slab includes a backspan region extending from the top of the supporting member opposite the cementitious balcony slab. A portion of the joist in the backspan region comprises a decking supporting member coupled to the web between the upper chord and the lower chord. The joist in the backspan region supports decking using the decking supporting member; however, the joist beyond the backspan region supports decking above the upper chord. In this way, the cementitious floor slab in the backspan region is thicker than the cementitious floor slab beyond the backspan region.

Growing community of inventors

Madison, NE, United States of America

David Lee Samuelson