Green Roof Drainage Plan
Green roof systems can be modular layered systems already prepared in trays including drainage layers growing media and plants or each component of the system can be installed separately on top of the structure.
Green roof drainage plan. The systems are designed to ensure that stormwater can be used by plants for longer periods of time without oversaturation of the system. Green roof systems can be shallow typically referred to as extensive or deep typically referred to as intensive. The design of the different drainage layers allows for a portion of the stormwater to be retained above where the water is allowed to flow freely off of the roof. For flat or nearly flat roofs primary drains are located at the lowest point of the roof.
Green roofs have influence on cost reduction due to low or no need for raincatching cisterns and similar equipment which is usually used for. The roof is likely to consist of an impermeable layer a susbstrate or growing medium and a drainage layer although not all green roofs require a drainage layer. Protection drainage and filtration. Green roof design.
Your green roof design will depend on the roof your preferred green roof system as well as your desired build up and vegetation. A green roof may need to incorporate edge detailing around mechanical structures and should be. Flow of water into them is promoted by positive drainage. As a rule of thumb a pitch under 10 degrees is normal for green roofs where a minimum fall of 1 60 can help encourage drainage.
Green roofs comprise a multi layered system that covers the roof of a building or podium structure with vegetation cover landscaping. The roof can often be the space where major building systems are specified including for mep. Bauder sdf drainage layer material of the drainage layer polyamide monofilament weight of the drainage layer 400 g m. The green roof design needs to accommodate adequate water retention suitable drainage structural loading and the depth of green roof growing substrate.
It is made of a filtration veil and the polyamide monofilament fibre network layer.