Minimum Weight Of Green Roof

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.

Minimum weight of green roof.

Green roof vegetation type. Weight loading kg m 2 low herbaceous succulents and grasses 10 2. The type of green roof in question is engineered to be light and doesn t have typical soil with plants see link above. Large trees up to 15 m.

The thickness of the drainage layer will depend on the roof structure and the water storage capacity required depending on the. Saturated with water the weight can increase by as much as 35 to around 100 to 110 pounds per cubic foot. Small trees up to 6 m. 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.

It is a good growing medium and ensures good water absorption and tenacity. Sedum vegetation blanket instantly providing at least 90 coverage on an extensive green roof. 40mm high perforated edge drainage trim for bauder sedum blanket. For example a traditional intensive green roof system for plants and grass featuring at least six layers including soil filter fleece drainage layer and vegetation is.

The company s website lists weights from about 18 psf to a little over 45 50 psf or so. Structural loads weight of green rooftops. Shrubs up to 3 m. There are two types of green roof.

2 al40 edge trim frames and retains the xf301 system. 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. 1 xf301 sedum blanket system with integrated water retention and filter layer. One cubic foot of dry agricultural dirt or loam typically used for a green roof weighs between 75 and 81 pounds.

Medium trees up to 10 m. Green roof system weights columbia green technologies 79 se taylor st. 3 drainage including filterfleece 11 20 mm. Green roof vegetation weight loadings.

Perennials and low shrubs up to 1 5 m. When it comes to estimating the weight of an existing roof field verification of the in place construction is necessary. 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.