{"id":284,"date":"2017-02-04T10:12:53","date_gmt":"2017-02-04T10:12:53","guid":{"rendered":"http:\/\/141.23.68.248\/wp\/?page_id=284"},"modified":"2021-01-25T10:10:22","modified_gmt":"2021-01-25T10:10:22","slug":"green-rooftop","status":"publish","type":"page","link":"http:\/\/141.23.68.248\/wp\/?page_id=284","title":{"rendered":"Green Rooftop"},"content":{"rendered":"

Definition<\/h3>\n

A green roof system is an extension of the existing roof. It is indeed an assembly of materials including plants added to a traditional roof system[1]<\/a>.<\/p>\n

Green rooftop provides a number of social, environmental and economic benefits both in private and public. These benefits are summarized in the following table :<\/p>\n\n\n\n\n
For Public<\/td>\nFor People<\/td>\nFor Building<\/td>\n<\/tr>\n
Stormwater Retention[2]<\/a>,\u00a0Moderation of Urban Island, Heat, Improved Air Quality, Habitat Creation<\/td>\nAesthetic, Recreation Time, Agriculture<\/td>\nEnergy Saving, Fire Resistance, Prolonging life of waterproofing membranes, Sound Insulation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Domains Requirements<\/strong><\/p>\n

The Layers<\/em><\/p>\n

    \n
  • The layers are put directly on the roof desk.<\/li>\n
  • The first layer is the waterproofing membrane which protects the roof from humidity.<\/li>\n
  • The insulation layer isolates the roof thermally.<\/li>\n
  • The protection fabric and the roof barrier also protect the roof.<\/li>\n
  • The drainage layer drains the exceeding of water to avoid the roots to rot, the choice of this layer is function of the tilt of the roof.<\/li>\n
  • The filter layer holds the soils and the vegetation which could block the drainage.<\/li>\n
  • The vegetation will grow on the growing media.<\/li>\n<\/ul>\n

    The structural loading Capacity<\/em><\/p>\n

    Before the installation of the green roof the structural assessment must be checked. The structure must indeed support the weight of the green roof (more than 400 kg\/m\u00b2 for an intensive green roof).<\/p>\n

    Vegetation<\/em><\/p>\n

    The choice of vegetation depends of the climate, the exposition of sun, wind and the use of the green roof. The vegetation will also influence the need of maintenance (some vegetation need more maintenance than other) and the depth of the growing media. Vegetation is a main domain of a green roof top and the main benefits of a green roof top is due to vegetation.<\/p>\n

    \"Layers<\/a>
    Layers of a green roof top, source: dcgreenworks.org<\/figcaption><\/figure>\n

    Water system management<\/em><\/p>\n

    An irrigation[3]<\/strong><\/a> system and a drainage system need to be installed. The drainage system is indispensable to deal with extreme rainfall events or flooding. The irrigation system has to be designed considering the purpose of the roof, the substrate water storage, the water availability, the vegetation, climate and water pressure. For instance, the irrigation system can be a recycling system, a drip irrigation system or a sprinkler system.<\/p>\n

    The research lead to the creation of this ontology :\u00a0Green Rooftop Ontology<\/a>\u00a0.<\/p>\n

     <\/p>\n

    The parametric Model<\/h3>\n

    Green Rooftop Parametric Model<\/a><\/p>\n