A wooden joist structure is formed with two elongated wooden beam members interconnected by a plurality of metal ribbed connectors. Each of the connectors includes a plurality of elongated connecting members interconnected by a plurality of support members. Each of the elongated connecting members has a plurality of teeth struck out from both of its end sections, which teeth extend in one direction from the connecting members or being embedded in the elongated wooden beams which are to be interconnected. These elongated connecting members are all parallel and lie in the same plane. The support members extend in an area between the intersections of the elongated connecting members and interconnected adjacent ones of the elongated connecting members. The support members extend in the same direction as the teeth that are struck out from the elongated connecting members. The support members are shorter than the elongated connecting members so that when the ribbed connector is attached to the wooden beams, the support members lie between the wooden members and act as a structural support for such wooden members. In constructing the wooden joist with the ribbed connectors, the ribbed connectors are arranged on opposite sides of the elongated wooden beams and can be arranged so that adjacent connectors on opposite sides of the wooden beams are longitudinally offset from each other so that they either partially overlap or have the edges arranged so that there is no overlapping.
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