| 摘要 |
The drainage chamber 1 comprises a plurality of stackable sections and a barrier plate 4, the barrier plate comprising an aperture 5 and covering an aperture within the chamber. An adjustable connection is preferably provided between the barrier plate and the stackable sections of the chamber which enables slidable adjustment of the height of the barrier plate relative to the drainage chamber. The stackable sections may comprise O or C-shaped sections 2,3 that are preferably formed from inner and outer walls. Preferably, the aperture in the barrier frame 4 is offset relative to its centre, such that the relative position of the aperture with respect to the height of the chamber can be adjusted by inverting the barrier plate. The barrier plate preferably includes slits via which the plate is connected to the chamber section by bolts. Also claimed is a barrier plate capable of being fixed to a drainage chamber. |
