Minimum Weight Of Green Roof

Shrubs up to 3 m.

Minimum weight of green roof.

One cubic foot of dry agricultural dirt or loam typically used for a green roof weighs between 75 and 81 pounds. The two key elements that contribute to weight are the density of the different layers that make up the green roof and how heavy it becomes as a result of rain absorption. Medium trees up to 10 m. 1 xf301 sedum blanket system with integrated water retention and filter layer.

Saturated with water the weight can increase by as much as 35 to around 100 to 110 pounds per cubic foot. 3 drainage including filterfleece 11 20 mm. Green roof system weights columbia green technologies 79 se taylor st. The thickness of the drainage layer will depend on the roof structure and the water storage capacity required depending on the.

Structural loads weight of green rooftops. Intensive green roofs are essentially roof gardens and may also need to allow for the additional weight of paving and terracing furniture and even trees. What contributes to green roof weight. Intensive roofs which are thicker with a minimum depth of 12 8 cm 5 1 16 in and can support a wider variety of plants but are heavier and require more maintenance and extensive roofs which are shallow ranging in depth from 2 cm 13 16 in to 12 7 cm 5 in lighter than intensive green roofs.

There are two types of green roof. It is a good growing medium and ensures good water absorption and tenacity. When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary. Sedum vegetation blanket instantly providing at least 90 coverage on an extensive green roof.

2 al40 edge trim frames and retains the xf301 system. Substrate roll is a lightweight green roof substrate manufactured from long mineral wool fibres. A built up roof for example will typically include the built up membrane itself with or without gravel as well as some kind of insulation and cover board which will vary in thickness from roof to roof. The company s website lists weights from about 18 psf to a little over 45 50 psf or so.

Perennials and low shrubs up to 1 5 m. An interesting example of an intensive green roof is manaton the award winning private house on dartmoor that uses local meadow grass to blend the family home into the landscape. The type of green roof in question is engineered to be light and doesn t have typical soil with plants see link above. Green roof vegetation type.

Green roof vegetation weight loadings. Small trees up to 6 m. Weight loading kg m 2 low herbaceous succulents and grasses 10 2.