| 摘要 |
The present invention concerns a building element for constructing noise protection screening, the element having a largely U-shaped cross section and being provided, on at least two opposite sides 1, 2, with coupling members 9, 10, 11, 12 for joining together or coupling with complementary coupling members of another essentially identical element, so that two coupled elements together form at least one closed hollow space, and the sides 1, 2, 3, 4 forming the element and having the coupling members are connected to each other by way of corner sections 5, 6, 7, 8 whose apices are directed in towards the longitudinal centre axis of the element. <IMAGE> |
