The invention relates to civil engineering and can be used for construction of floor and roofing of buildings and constructions. A glued plywood beam with X-type plywood wall has complicated geometrical form of the wall and thus provides its rigidity and, respectively, increased strength. Such geometry of the wall decreases probability of destruction of building construction due to loss of stability and simplifies technology of production, with arrangement of rigidity ribs at the ends of the beam only. Regular glued plywood beams include constructive need in installation of large number of cross rigidity ribs and thus have higher labor consumption, this is not needed in the case of X-type beams.
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