| 摘要 |
A steel beam for a slim floor for a slim floor using cold-formed steel is provided to decrease the floor height of a building, and to make the perfect composite action with reinforced concrete by installing a bolt. A steel beam(1) for a slim floor for a slim floor using cold-formed steel is formed by connecting two steel members(1a), which are manufactured by one steel plate and formed to have an integral structure of a lower flange(10), a web(20) and an upper flange(30), to face each other, wherein the lower flange is composed of a first horizontal unit(11), a first vertical unit(13) bent upward vertically from one side of the first horizontal unit, a second horizontal unit(12) bent parallel to the first horizontal unit from the first vertical unit and located in the upper part of the first horizontal unit, and a second vertical unit(14) bent upward from the other side of the first horizontal unit and contacted with the second horizontal unit, and the web is manufactured by bending a steel plate upward vertically from the second horizontal unit and located in an extension line of the second vertical unit, and the upper flange is formed on the top of the web and formed by bending the web to be parallel to the first and second horizontal units of the lower flange.
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