Composite joist floor system

Patent metadata

Field	Value
Publication number	US-9243404-B2
Application number	US-201414487403-A
Country	US
Kind code	B2
Filing date	Sep 16, 2014
Priority date	Jan 24, 2008
Publication date	Jan 26, 2016
Grant date	Jan 26, 2016

Abstract

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.

First claim

What is claimed is:

1. A building structure comprising:
a first supporting structure;
a second supporting structure;
a plurality of floor joists supported between and operatively coupled to the first supporting structure and the second supporting structure, wherein each of the plurality of floor joists comprise:
an upper chord;
a lower chord;
a joist shoe on at least a first end of the floor joist, and wherein the joist shoe is located between the upper chord and the lower chord and extends over and is operatively coupled to the first supporting structure beyond at least a portion of the upper chord of the floor joist, wherein the joist shoe is spaced apart from the upper chord and the lower chord; and
a web operatively coupled to at least the upper chord and the lower chord;

a plurality of joist shoe fasteners, each configured to operatively couple the joist shoe of the plurality of floor joists to the first supporting structure, wherein the joist shoe extends beyond at least a portion of the upper chord of the floor joist to provide sufficient room for utilizing a tool to operatively couple the joist shoe of the plurality of floor joists to the first supporting structure;
decking operatively coupled to the plurality of floor joists;
a closure extending between the first supporting structure and the decking forming a channel; and
wherein a cementitious slab is formed within the channel and above the decking that encapsulates at least a portion of the upper chord and at least a portion of the joist shoe of the plurality of floor joists, and at least a portion of the plurality of joist shoe fasteners.

2. The building structure of claim 1 , further comprising:
a plurality of decking fasteners, and wherein the decking is operatively coupled to the plurality of floor joists through the plurality of decking fasteners.

3. The building structure of claim 2 , wherein the plurality of decking fasteners comprise self-drilling stand-off screws.

4. The building structure of claim 2 , wherein the plurality of decking fasteners comprise welded shear stud fasteners.

5. The building structure of claim 1 , wherein the plurality of joist shoe fasteners comprise self-drilling stand-off screws.

6. The building structure of claim 1 , wherein the plurality of joist shoe fasteners comprise welded shear stud fasteners.

7. The building structure of claim 1 , further comprising:
at least one rebar located within the channel below or adjacent the upper chord; and
wherein the cementitious slab formed within the channel further encapsulates at least a portion of the rebar.

8. The building structure of claim 1 , wherein the joist shoe and the upper chord are each formed from two angles, and wherein the joist shoe extends beyond an upper chord end of the upper chord, or beyond a portion of one of the two angles of the upper chord.

9. The building structure of claim 1 , wherein the upper chord, the lower chord and the joist shoe of the plurality of floor joists are operatively coupled through the web, or through an end diagonal that is separate from the web.

10. The building structure of claim 1 , wherein a portion of the closure is assembled either above the decking or below the decking.

11. A building structure comprising:
a first supporting structure;
a second supporting structure;
a plurality of floor joists supported between and operatively coupled to the first supporting structure and the second supporting structure, wherein each of the plurality of floor joists comprise:
an upper chord;
a lower chord;
a joist shoe on at least a first end of the floor joist, and wherein the joist shoe is located between the upper chord and the lower chord and is operatively coupled to at least the first supporting structure, wherein the joist shoe of the plurality of floor joists is spaced apart from the upper chord and the lower chord; and
a web operatively coupled to at least the upper chord and the lower chord;

a plurality of joist shoe fasteners, each configured to operatively coupled the joist shoe to the first supporting structure
decking operatively coupled to the plurality of floor joists;
a closure extending between the first supporting structure and the decking forming a channel;
rebar located within the channel below or adjacent the upper chord; and
a cementitious slab formed within the channel and above the decking that encapsulates at least a portion of the upper chord and at least a portion of the joist shoe of the plurality of floor joists, at least a portion of the plurality of joist shoe fasteners, and at least a portion of the rebar.

12. The building structure of claim 11 , wherein the joist shoe of the plurality of floor joists extends beyond at least a portion of the upper chord of the floor joist to provide sufficient room for utilizing a tool to operatively couple the joist shoe of the plurality of floor joists to the first supporting structure.

13. The building structure of claim 12 , wherein the joist shoe and the upper chord are each formed from two angles, and wherein the joist shoe extends beyond an upper chord end of the upper chord, or beyond a portion of one of the two angles of the upper chord.

14. The building structure of claim 11 , further comprising:
a plurality of decking fasteners, and wherein the decking is operatively coupled to the plurality of floor joists through the plurality of decking fasteners.

15. The building structure of claim 14 , wherein the plurality of decking fasteners comprise self-drilling stand-off screws.

16. The building structure of claim 14 , wherein the plurality of decking fasteners comprise welded shear stud fasteners.

17. The building structure of claim 11 , wherein the plurality of joist shoe fasteners comprise self-drilling stand-off screws.

18. The building structure of claim 11 , wherein the plurality of joist shoe fasteners comprise welded shear stud fasteners.

19. The building structure of claim 11 , wherein the upper chord, the lower chord, and the joist shoe of the plurality of floor joists are operatively coupled through the web, or through an end diagonal that is separate from the web.

20. The building structure of claim 11 , wherein a portion of the closure is assembled either above the decking or below the decking.

21. A method for forming a building structure, the method comprising:
assembling a plurality of floor joists to a first supporting structure and a second supporting structure, wherein each of the plurality of floor joists comprise:
an upper chord;
a lower chord;
a joist shoe on at least a first end of the floor joist, and wherein the joist shoe is located between the upper chord and the lower chord and extends over and is operatively coupled to the first supporting structure beyond at least a portion of the upper chord of the floor joist, wherein the joist shoe is spaced apart from the upper chord and the lower chord;
a web operatively coupled to at least the upper chord and the lower chord; and
wherein assembling comprises using a plurality of joist shoe fasteners, wherein each are configured to operatively couple the joist shoe of the plurality of floor joists to the first supporting structure, wherein the joist shoe extends beyond at least a portion of the upper chord of the floor joist to provide sufficient room for utilizing a tool to operatively couple the joist shoe of the plurality of floor joists to the first supporting structure;

assembling decking to the plurality of floor joists;
assembling a

Assignees

• Nucor Corp

Inventors

• Studebaker Glenn Wayne
• Samuelson David Lee
• Dayton Lionel Edward

Classifications

• F16B25/0031

  the screw being designed to be screwed into different materials, e.g. a layered structure or through metallic and wooden parts · CPC title

• E04B1/165 Primary

  with elongated load-supporting parts, cast in situ (E04B1/161, E04B1/163 and E04B1/164 take precedence) · CPC title

• E04B2005/322

  with permanent forms for the floor edges · CPC title

• F16B5/0275 Primary

  the screw-threaded element having at least two axially separated threaded portions (F16B5/0283 takes precedence) · CPC title

• F16B25/0094

  the screw being assembled or manufactured from several components, e.g. a tip out of a first material welded to shaft of a second material · CPC title