Thin-walled beam with channel section and bent web

摘要

A narrow -walled beam with a curved centre having a centre of height (H) and its perpendicular width shelves (W) is characterised by this,that the centre is curved inward to the depth (k) creating a curve (4), and the shelves have a flat outer surface,and the inner surface consists o f rectangular boxes (1) o f height (d) and width (f) o f each, moved to a distance (e) from the edge o f the shelf.