Water Quality Function Of An Extensive Vegetated Roof

The projects are located on a variety of building sites and represent a diverse set of available extensive green roof installation types including vegetated mat built up and modular tray systems as well as plant types.

Water quality function of an extensive vegetated roof.

Stormwater drainage quality function of the vegetated roof was compared to a conventional impermeable high albedo membrane roof in addition to paired measurements of wet and bulk depositions at the study site. Through the appropriate selection of materials even thin vegetated covers can provide significant rainfall retention and detention functions. By reducing both the volume and the rate of storm water runoff vegetative roofs benefit cities with combined sewer overflow cso impacts. Vegetated roof covers can be optimized to achieve water quantity and water quality benefits.

Nutrient losses tn tp doc were low associated with the strong water retention. Water quality function of the roof did not change over the study period. Additionally pollutant removal within vegetated roofs is often expected. This study investigated influence on runoff water quality from two full scale vegetated roofs an intensive from japan and an extensive from sweden.

A four year study of wet and bulk deposition and water quality in runoff from an extensive urban vegetated roof. Dimitar todorov department of construction management school of business and justice studies utica college 1600 burrstone rd utica ny 13502 united states. That being said if you can do at grade landscaping i e. Rain gardens bio swales etc it will almost always be more economical than a vegetative roof.

This study investigated influence on runoff water quality from two fullscale vegetated roofs an intensive. In this report we present an analysis of water benefits from an array of observed green roof and control non vegetated roof project sites throughout nyc. We present concentrations and fluxes of nutrients and major solutes. Request pdf water quality function of an extensive vegetated roof in this paper we present the results of a four year study of water quality in runoff from an extensive sedum covered.

A marked seasonal variation was evident in the retention of nutrients. However it is commonly not a design feature. Runoff water quality from vegetated roofs is an important environmental aspect in particular if vegetated roofs are combined with open storm water systems. Water quality function of an extensive vegetated roof.

Water quality function of an extensive vegetated roof.