Chapter 9 14 green roofs page 5 design criteria basic requirements a green roof proposed to meet any of the design and performance standards at n j a c.
Green roof design criteria.
Design criteria green roofs typically consist of layers which are designed to support plant growth and retain water for plant uptake while preventing ponding on the roof surface.
Due to the increased soil depth the plant selection is more diverse and can include trees and shrubs which allows for the development.
Green roofs in sustainable landscape design steven cantor 2008 w w norton isbn.
Green roof layer requirements.
Design guidelines for green roof 5 the growing medium is often soil based ranging in depth from 20 60 cm 8 24 with a saturated weight increase of between 290 967 7 kg m2 60 200 lbs sf.
7 8 5 must be designed in accordance with the following design criteria.
The vf 1 fire design guide establishes clear criteria for minimizing the risk of fire on green roofs through prudent design and mandatory maintenance regiment.
Schiffer publishing ltd atglen pennsylvania 2007.
Ecological design and construction by earth pledge foreword by william mcdonough.