نتایج جستجو برای: roofs

تعداد نتایج: 2237  

2018
Lea Piscitelli Pierre-Adrien Rivier Donato Mondelli Teodoro Miano Erik J. Joner

Green roofs are used increasingly to alleviate peaks of water discharge into the sewage systems in urban areas. Surface runoff from roofs contain pollutants from dry and wet deposition, and green roofs offer a possibility to reduce the amounts of pollutants in the water discharged from roofs by degradation and filtering. These pollutants would otherwise enter wastewater treatments plants and ul...

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Green schools are a new type of school, in which the use of renewable energy is less than that of conventional schools. In this regard, nowadays, adding green layers to the roof of schools, in addition to increasing the Students' communication with nature, energy saving has improved in these spaces. However, to improve energy saving yield, the priority of these types of roofs in different clima...

2016
Ming Fai Chow

Green roof system is considered a relatively new concept in Malaysia even though it has been implemented widely in the developed countries. Generally, green roofs provide many benefits such as enhancing aesthetical quality of the built environment, reduce urban heat island effect, reduce energy consumption, improve stormwater attenuation, and reduce noise pollution. A better understanding on th...

Journal: :آب و خاک 0
طباطبائی یزدی طباطبائی یزدی رضائی پژند رضائی پژند خاتمی مشهدی خاتمی مشهدی

abstract this papare is resaults of analysing the data which reported from a harvesting project. the site for collecting data is buildings' roofs of azad islamic university of mashhad. a rain gauge and a small reservoir (capacity is 4 cubic meters) were set at this site. then the amount of precipitation and its runoff were measured during two years (from 1386, dey, 23 to 1388, tir, 3).the sampl...

2013
CHARLOTTE L. WALTERS

As the world population continues to increase, with more than 50 percent of people now residing within cities, remaining natural and semi-natural habitats within urban areas play an increasingly important role for people and wildlife (Mortberg and Wallentinus, 2000; Benedict and McMahon, 2002; Jim, 2004; Town and Country Planning Association, 2004; Bierwagen, 2007; Gill et al., 2007; Tratalos e...

Journal: :Water research 2011
Ramon Farreny Tito Morales-Pinzón Albert Guisasola Carlota Tayà Joan Rieradevall Xavier Gabarrell

Roofs are the first candidates for rainwater harvesting in urban areas. This research integrates quantitative and qualitative data of rooftop stormwater runoff in an urban Mediterranean-weather environment. The objective of this paper is to provide criteria for the roof selection in order to maximise the availability and quality of rainwater. Four roofs have been selected and monitored over a p...

Journal: :Environmental science & technology 2009
Kristin L Getter D Bradley Rowe G Philip Robertson Bert M Cregg Jeffrey A Andresen

Two studies were conducted with the objective of quantifying the carbon storage potential of extensive green roofs. The first was performed on eight roofs in Michigan and four roofs in Maryland, ranging from 1 to 6 years in age. All 12 green roofs were composed primarily of Sedum species, and substrate depths ranged from 2.5 to 12.7 cm. Aboveground plant material was harvested in the fall of 20...

Journal: :Water research 2011
Carolina B Mendez J Brandon Klenzendorf Brigit R Afshar Mark T Simmons Michael E Barrett Kerry A Kinney Mary Jo Kirisits

Due to decreases in the availability and quality of traditional water resources, harvested rainwater is increasingly used for potable and non-potable purposes. In this study, we examined the effect of conventional roofing materials (i.e., asphalt fiberglass shingle, Galvalume(®) metal, and concrete tile) and alternative roofing materials (i.e., cool and green) on the quality of harvested rainwa...

Journal: :محیط شناسی 0
داود نهرلی استادیار مهندسی فضای سبز، دانشکدة کشاورزی، دانشگاه تبریز مهدی عبداللهی دانشجوی کارشناسی ارشد، جغرافیا و برنامه ریزی شهری، دانشکدة علوم انسانی و اجتماعی، دانشگاه تبریز مجتبی ولی بیگی دانشجوی دکترای، جغرافیا و برنامه ریزی شهری، دانشکدة علوم انسانی و اجتماعی، دانشگاه تبریز

due to the high value of land, low area of green space and its unsuitable distribution in the regions, the use of green roof technology in iran’s metropolises seems a suitable option in order to improve the quality of urban environment. using hierarchical analysis technique (ahp) and a survey research, this study identifies challenges which prevent the extension of green roofs in iran. so by st...

2003
Brian Bradshaw

Layers in ArcScene containing polygon features can be extruded to create 3D blocks for display in the current scene. While this is useful for representing flat-roofed buildings within ArcScene it does not create a new, 3D shapefile and cannot create buildings with peaked or curved roofs. A method to create 3D shapefiles representing buildings with complex roofs and then export these objects to ...

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