| 摘要 |
The plate (1) has longitudinal outwardly bent formation (12, 13) in the area where the body parts (4, 5) evolve into the upper flanges (3). The profiled plate is used in a composite joist where it supports a layer of cast-on concrete which works in conjunction with the embossed (10, 11) and outwardly bent formation (12, 13). |
