Vegetation Volume Fraction Green Roof Extensive

The plants chosen must be appropriate for the roof type extensive intensive or semi intensive.

Vegetation volume fraction green roof extensive.

For a conventional roof. 15 to 50 per square foot. Because extensive roofs are lighter than other green roofs they require a specific type of vegetation. Control name lid type layer parameter value gr your initial green roof surface berm height 3 vegetation volume fraction 0 2 surface roughness 0 1 surface slope 1 0 soil thickness 6 porosity 0 5 field capacity 0 2 wilting point 0 1 conductivity 0 5 conductivity slope 10 suction head 3 5 drainage mat thickness 1 void fraction 0 5 roughness 0.

Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used. An intensive green roof is a deeper typically greater than six inches heavier system designed to sustain complex landscapes. In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs. Along with the makeup and depth of the growing medium selecting the right plants is crucial to the success of a green roof.

Climate clearly plays a major role in choosing the best plants for a green roof. The bauder green roof vegetation installation guide and the bauder extensive green roof maintenance guide both of which can be found at www bauder co uk. 24 control name lid type layer parameter value gr your initial green roof surface berm height 3 vegetation volume fraction 0 2 surface roughness 0 1 surface slope 1 0 soil thickness 6 porosity 0 5 field capacity 0 2 wilting point 0 1 conductivity 0 5 conductivity slope 10 suction head 3 5 drainage mat thickness 1 void fraction 0 5 roughness 0. 8 to 20 per square foot.

Green roofs are suggested as one of the potential solutions of adapting cities to climate change and as a means to cool urban areas rosenzweig et al 2009 rosenzweig et al. A 2006 study by the university of michigan comparing costs of conventional and green roofs showed that on average installing a green roof costs about 22 00 sq. For intensive green roof. Succulents these are exceptional plants to consider and they are used to cover an important area of green roofs.

Green roofs on small 1 8 by 2 4 m buildings consisting of a conventional flat roof covering a root barrier a 12 mm thick enka drainage layer 89 mm of growth medium 25 mm of porous expanded. An extensive green roof is a thin usually less than six inches lightweight system that is typically predominantly planted with succulents drought tolerant ground covering plants and grass. Plants for an extensive green roof here is a list of 10 of the best plants in various categories that you can use.