Water Balance Of A Green Roof

Indeed for a green roof located in the greater paris area characterized by a temperate climate the water balance during a rainfall event can be reduced to three components see eq.

Water balance of a green roof.

In the rainy season there sults were as follows. Conventional roof green roof and also roof with substrate and without plant. Measurements of the water balance components of a large green roof in the greater paris area article pdf available in earth system science data 12 2 1025 1035 may 2020 with 43 reads. 1 where p is the precipitation qthe discharge flowing out.

Green roofs can also reduce stormwater runoff. It should have good consistent drainage and aeration with a structure that enables it to hold water. Each vegetation green roof modules contains a complete hierarchy of green roof systems including drainage rain retention filtration growth media and plants. Local rainfall has been analysed with the help of an optical.

Current green roof models are more sophisticated and complete than 10 years ago accurate green roof modeling requires energy and mass balance all models should to be fully validated before implementation in building energy simulations software don t try this at home. Green roof trays is simple in design easy to install and uses our standard green roof planting method for roof maintenance and repair. Validated green roof model is coming soon. The value of the runoff coefficient of the modules with vegetation was onaverage 0 569 0 068 the module without vegetation and the conventional.

Water is stored by the roof s substrate and then taken up by the plants from which it is returned to the atmosphere through transpiration and evaporation. It should also be light weight resistant to decomposition and compression and physically and chemically stable. To assess the performance of green roofs in storm water reduction a simple water balance approach was used modified from hilten et al. 1 δ m c p e t r o where p is the precipitation e t is the evapotranspiration r o is runoff from the system and δ m c is the change in substrate moisture content.

1 as evapotranspiration can be neglected. The blue green wave bgw is a large 1 ha wavy form vegetated roof located in front of école. A root barrier can be incorporated into the waterproofing itself or may consist of an additional membrane on top of the waterproofing. The water balance for three scenarios.