FIELD: construction.
SUBSTANCE: profiled sheet comprises longitudinal corrugations that repeat along the width of a metal sheet and are made of triangular shape with flat sections of identical width between them. Flat sections made by longitudinal corrugations comprises cross corrugations made at the angle to the axis of the flat section. Cross corrugations are made with periodical pitch at the angle to each other in the form of ledges of extended rectangular shape with rounded angles, and the opposite contours of the sheet are made as repeating each other.
EFFECT: increased stiffness of the sheet.
3 cl, 2 dwg
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