Intensive Green Roof Loads

Intensive green roofs have more soil and a deeper growing medium sometimes several feet that can support a more diverse plant selection including small trees.

Intensive green roof loads.

A variation of the extensive green roof is called semi extensive. Where added loading is required the 6 inch or 8 inch depths can be designed as functional vegetative green roofs. Functional or extensive vegetative green roofs are well suited to roofs with little load bearing capacity. In older buildings or new build this may require costly structural reinforcement which in some cases may prove prohibitively expensive.

Applicable to the greengrid 4 inch depth. A traditional green roof can exert a load of up to 250 kg per m2 and that inevitably means a strong building is required to support the weight. Typically the least expensive vegetative green roof application. The venny green roof melbourne.

Semi intensive green roofs include features of both types. Photo by andrew wutke. Depending on the source you look at these roofs may add 10 to 35 pounds per square foot to a roof s load. The venny green roof has shallow substrates on two types of roof the first roof is on shipping containers and is designed for a dead load of 250kg m 2 and live load of 100kg m 2.

Thus they have more substantial structural loads and need more frequent maintenance and watering. Extensive green roofs are the simplest to install and are very often added to existing roofs. 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.