Weight Of Extensive Green Roof

Extensive green roofs traditionally support 50 120 kg m 2 10 25 pounds per square foot of vegetation while intensive roofs support 390 730 kg m 2 80 150 pounds per square foot of vegetation.

Weight of extensive green roof.

Once the plants are installed and the soil is moist these rooftop green spaces can weigh as much as 150 pounds per square foot. You can plant plants that have a shallow root system on these roofs. Green roofs are also known as vegetative or eco roofs. Extensive roofs are lower maintenance that intensive ones and lighter in weight.

A green roof is a layer of vegetation planted over a waterproofing system that is installed on top of a flat or slightly sloped roof. It weighs 60 and 200kg per square metre. Green roofs which are planted and seeded tend to perform better in the long term. Although there are no precise definitions of.

Green roofs consist of a number of layers including a waterproofing layer drainage layer substrate and planting. As surface area increases the weight of green roofs obviously increases proportionally. A green roof with a lightweight solution of 30 kg m2 is only possible with sedum vegetation and a green roof with a weight of 220 kg m2 is composed of a combination of sedum grasses herbs or host plants. So in dry state 50 m2 traditional green roof weighs around 5 tons while a similar sized urbanscape roof weighs just 1 ton.

Intensive green roofs weigh from 35 pounds to beyond 100 pounds per square foot when dry it is all a matter of the soil depth which is affected by the amount of mounding that is used. Such facilities include different types of plants with the shallow root system. Extensive green roofs on the other hand have a shallow soil of 200mm thick. What is a green roof.

They fall into three main categories extensive intensive and semi intensive. 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 planting medium in intensive green roofs starts at 6 inches although you will see some wiggle room in various definitions and really elaborate designs may exceed a couple feed.