| 摘要 |
The element includes a batten-engaging formation 220, and a channel 240 for draining precipitation towards an eave, with a first end 242 of the channel being receivable inside a second end 244 of a neighbouring element channel. The first end may be narrower and shallower than the second end and be defined by a stepped profile 252. The batten-engaging portion may include first and second flanges 222, 224, and be located at the second end of the channel on a second side wall 250 which is higher than a first side wall 248. The first flange may be parallel to the channels base 246, and the second flange may be perpendicular to the first. The first and second ends of the channel may have constant widths. Also claimed is a drainage system with a plurality of the drainage elements fixed to battens along a sloping perimeter of a roof. |
