Intensive Green Roof Loads

Where added loading is required the 6 inch or 8 inch depths can be designed as functional vegetative green roofs.

Intensive green roof loads.

Functional or extensive vegetative green roofs are well suited to roofs with little load bearing capacity. 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. 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.

The solution is simple. Semi intensive green roofs include features of both types. 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. Photo by andrew wutke.

They are usually accessible. 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. A variation of the extensive green roof is called semi extensive. In older buildings or new build this may require costly structural reinforcement which in some cases may prove prohibitively expensive.

The second trussed roof is designed for a dead load of 160kg m 2 and a live load of 40kg m 2. The venny green roof melbourne. Applicable to the greengrid 4 inch depth.