| 摘要 |
The invention is a section, preferably made of sheet metal, consisting of upper and lower flanges (2,3) together with webs (4) connecting these flanges.The aim of sections of this type is to be able to withstand heavy point loads while making the load area as large as possible in relation to the amount of manufacturing material used.This invention is characterised by the upper flanges (2) and the connecting webs (4) showing across the section's (1) longitudinal stiffeners (5 and 8).<IMAGE> |
