| 摘要 |
<p>A trench drainage channel support 10 comprises a two-part bridge member 14 for insertion through opposing side walls 80 of a trench drainage channel 12 below a grating 50. A support element 16 extends from each bridge member part 22, 24, and an engagement element 18 engages a ground support member 20. Due to the bridge member 14 extending through the side walls 80 of the drainage channel 12, a thinner walled drainage channel 12 can be utilised, in this case preferably being of pressed metal. The bridge member 14 thus prevents or limits outward splaying of the opposing channel walls, as well as supporting the drainage channel 12. Later embodiments relate to a trench channel grating support, a pressed metal drainage channel, a channel assembly, a method of rigidifying the metal channel and a method of installing the channel assembly</p> |
