Hainan Steel tells you: Lightweight steel portal frame roof drainage What are the requirements

Light steel plant due to poor drainage and overflow gutter to the interior, the situation affect the normal use of occasionally occur, primarily designed to analyze the factors that is not rational. On the concrete roof, within days of the ditch water rose to the roof leaking problem usually does not occur, so "the construction of water supply and drainage design specifications" (GB500152003) provisions of the design storm sewer reproduce year only, riser secretion endless rain, allowing innings gable gutter secreted from the plant safety overflow through the roof.

The light steel plant roof and gutters are fabricated steel components, sealing performance is far less than the concrete slab roof, so the design roof drainage, should not apply the traditional concept of the concrete roof drainage, such as the roof area per 200m to set up a root rainwater pipe. Hainan Steel