초록 ▼

The present invention is directed to a framing member for use in a steel framed flooring structure. The framing member has a U-shaped rectangular cross section with two parallel spaced apart flanges and a central web bridging the flanges and connected to one edge of each of the flanges. The central

The present invention is directed to a framing member for use in a steel framed flooring structure. The framing member has a U-shaped rectangular cross section with two parallel spaced apart flanges and a central web bridging the flanges and connected to one edge of each of the flanges. The central web has an extension on each end thereof, the extension extending beyond the flanges a distance of at least half the width of the flange.

대표청구항 ▼

1. A steel framed floor comprising: at least one rim joist attached to a wall; the rim joist being a metal member having a generally U shaped rectangular cross section with two parallel spaced apart rim joist flanges and a rim joist central web bridging the rim joist flanges;a plurality of floor joi

1. A steel framed floor comprising: at least one rim joist attached to a wall; the rim joist being a metal member having a generally U shaped rectangular cross section with two parallel spaced apart rim joist flanges and a rim joist central web bridging the rim joist flanges;a plurality of floor joists each being a metal member having a generally C shaped rectangular cross section with two parallel spaced apart flanges and a central web bridging the flanges, each floor joist having two ends with at least one of said the two ends contained within and attached to the rim joist; each floor joist positioned in a parallel spaced apart relationship to each other and generally perpendicular to the rim joist to generally align the flanges of the floor joists with the rim joist flanges;the central web of each of the floor joists having an integral extension of the web located at and continuous with each of the two ends of the web, the two extensions of the web being bent inwardly between said two parallel spaced apart flanges of the floor joist to reinforce the end of the central web of the floor joist, and at least one of the extensions of the one of the two ends and the spaced apart flanges of the floor joist are contained within the rim joist with the at least one of the extensions abutting against the rim joist central web and being directly attached thereto by at least one screw. 2. The steel framed floor according to claim 1 wherein each floor joist is provided with slots between the central web and each of the extensions to allow the extensions to be easily bent. 3. The steel framed floor according to claim 2 wherein each floor joist flange has a width and each of the extensions have a width equal to the width of the floor joist flanges. 4. The steel framed floor according to claim 2 wherein each floor joist flange has a width and each of the extensions have a width equal to at least half the width of the floor joist flanges. 5. The steel framed floor according to claim 1, further comprising a beam, wherein one of said plurality of floor joists meets another floor joist over the beam, wherein said another floor joist comprises a metal member having a generally C shaped rectangular cross section with two parallel spaced apart flanges and a central web bridging the flanges, the central web of said another floor joist having an integral extension of the central web located at and continuous with an end of the central web which meets the one of said plurality of floor joists, wherein the extension of the web of said another floor joist is bent inwardly between said two parallel spaced apart flanges of the floor joist to reinforce the end of the central web of said another floor joist. 6. The steel framed floor according to claim 5, wherein the central web of the one of said plurality of floor joists is connected to the central web of said another floor joist by at least one screw. 7. The steel framed floor according to claim 5, wherein the central web of the one of said plurality of floor joists is connected to the central web of said another floor joist by at least one bolt. 8. The steel framed floor according to claim 1, wherein one of said two extensions of at least one of the plurality of floor joists is bent inwardly at an angle other than a right angle. 9. The steel framed floor according to claim 8, wherein the angle other than the right angle matches an angle between said at least one of the plurality of floor joists and the rim joist. 10. The steel framed floor according to claim 8, wherein the one of said two extensions of said at least one of the plurality of floor joists is bent inwardly along a bend line in the central web of said at least one of the plurality of floor joists having a plurality of slots cut along the bend line. 11. A steel framed floor comprising: at least one rim joist attached to a wall; the rim joist being a metal member having a generally U shaped rectangular cross section with two parallel spaced apart rim joist flanges and a rim joist central web bridging the rim joist flanges;a plurality of floor joists each being a metal, member having a generally C shaped rectangular cross section with two parallel spaced apart flanges and a central web bridging the flanges, each floor joist having two ends with at least one of said the two ends contained within and attached to the rim joist; each floor joist positioned in a parallel spaced apart relationship to each other and generally perpendicular to the rim joist to generally align the flanges of the floor joists with the rim joist flanges;the central web of each of the floor joists having an integral extension of the web located at and continuous with each of the two ends of the web, the two extensions of the web being bent inwardly between said two parallel spaced apart flanges of the floor joist to reinforce the end of the central web of the floor joist, and at least one of the extensions of the one of the two ends and the spaced apart flanges of the floor joist are contained within the rim joist with the at least one of the extensions abutting against the rim joist central web, wherein the central web of each of the floor joists is directly attached to the rim joist central web without additional support members other than screws.