| 摘要 |
A gutter arangement for a roof having, as a primary roofing material, corrugated roofing sheets 12 comprises a gutter 11 which extends substantially horizontally, and which is adapted to receive water discharged from the roofing sheets. The gutter is formed with at least one discharge aperture 14 or gulley to permit water to drain from the gutter. The gutter is covered by corrugated panels 13 which extend axially of the gutter. The gutter panels are perforated at least in the region above the or each discharge gulley. The perforations 17 extend into the region of the gutter panel which is located beneath the lower edges of the roofing panels so that even if the exposed apertures are blocked, some apertures will remain unblocked to permit water to drain from the valley into the gutter and thus to the discharge gulley. <IMAGE> |
