Investigating the hydrological performance of green roofs using storm water management model

Paithankar, Deepak Narayan; Taji, Satish G.

doi:10.1016/j.matpr.2020.05.085

Cited by 14 publications

(6 citation statements)

References 20 publications

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“…The observed modeled runoff peak flow reduction was comparable with calculation results reported for two buildings' urban catchment with extensive green roofs located in India, where a decrease in flow was determined as approx. 10% for the applied rainfall events [25]. On the other hand, the 61.8-100% peak flow reduction reported for seven extensive green roofs in Beijing, China [80], or average values of 49.0-90.0% for colder climates presented in a survey paper [24] were higher than those presented in this study, however, these values were measured solely for green roofs and standard roofs.…”

Section: Discussioncontrasting

confidence: 81%

Hydrologic Effectiveness and Economic Efficiency of Green Architecture in Selected Urbanized Catchment

Widomski

Musz-Pomorska

Gołębiowska

2023

Land

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This paper presents a numerical assessment of the influence of green roofs applied in the urbanized catchment on the rainwater outflow hygrogram as well as costs and economic efficiency analysis of the proposed green architecture application. The campus basin of the Lublin University of Technology, Poland, was selected as the object of the study. Three variants of extensive green roof applications were designed. The numerical model of surface runoff was developed in US EPA’s SWMM 5.2 software. The simulations were performed for three different rainfall events of various intensities and durations. The cost efficiency of the proposed green architecture was assessed by the Dynamic Generation Costs indicator, while economic effectiveness was tested by Benefits–Costs Ratio and Payback Period determined for all assumed variants. The determination of economic efficiency indicators was based on investment and maintenance costs estimation, assumed discount rate, and time duration of assessment. Results of numerical calculations showed up to 16.81% of peak flow and 25.20% of runoff volume reduction possibly due to the green roof application. All proposed variants of green roof applications in the studied urbanized catchment were assessed as generally profitable due to possible financial benefits related to heating and cooling energy savings and avoiding periodical change of bitumen roof cover.

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Section: Discussioncontrasting

confidence: 81%

Hydrologic Effectiveness and Economic Efficiency of Green Architecture in Selected Urbanized Catchment

Widomski

Musz-Pomorska

Gołębiowska

2023

Land

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“…Carpenter et al (2016) calculated the green roof discharge volume for precipitation events of 15 mm or greater in Syracuse, New York. Paithankar & Taji (2020) found that the water storage capacity of a green roof with a depth of 150 mm ranges from 12.75 to 19.75 mm. The water retention performance can be increased by increasing the substrate depth and altering the substrate composition or by altering the properties of green roof structures (Stovin et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

“…In the current study, we conducted an in situ examination of the properties of a green roof substrate; such studies have seldom been previously performed. The effects of climatic parameters have also been relatively neglected in previous studies that have computed the water retention capabilities of green roofs (Paithankar & Taji, 2020). The effect of land use on the potential for converting grey roofs to green roofs was also examined, for the first time, in this study.…”

Section: Introductionmentioning

confidence: 99%

Increasing water retention capacity via Grey roof to green roof transformation

Chen

2022

Water & Environment J

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This study evaluated the potential of transforming nonvegetated (grey) roofs into vegetated (green) roofs to increase their water retention capacity and the retention of surface runoff in Taipei City. Of the total area of Taipei City (26 855 ha), we found that 304.5 ha of grey roof could be converted to green roof. Residential areas with higher living standards had a greater potential for grey roof to green roof transformation. The sampled substrate had an average porosity of 59.2% and a bulk density of 1.00 g/cm3. Surface runoff is likely to occur when the level of precipitation exceeds the field capacity of the green roof (13.3 mm/day). The highest percentage of runoff reduction (59.0%) occurred in the cold season. During the rainy months, the runoff reduction ranged from 14% to 28%. The water retention capacity of the green roof was higher during low‐intensity rainfall events than during high‐intensity rainfall events.

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“…(Stovin et al, 2012) Yeşil çatıların hidrolojik performansı Mahar ashtra (SWMM) Yeşil çatıların tepe akışlarını %10,80 oranında azalttığı tespit edilmiştir. (Paithankar and Taji, 2020) Yağmur suyu hasadı İstanb ul…”

Section: Analizunclassified

Yeşil Altyapı Sistemleri Kapsamında Yağmur Suyu Yönetimi: Malatya Kent Örneği

DİNÇER

Yılmaz

2022

Türk Tarım Ve Doğa Bilimleri Dergisi

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Aşırı kentleşme ve beraberinde getirdiği altyapı sorunları yağmur suyundan kaynaklı bir takım çevresel problemlere yol açmaktadır. Büyüyen ve gelişen kentlerimizde zamanla meydana gelen yoğun yapılaşma, beton, asfalt vb. gibi geçirimsiz yüzey miktarlarının artmasına ve yeşil alan gibi geçirimli yüzeylerin azalmasına sebep olmaktadır. Bunun sonucunda ise yeryüzüne inen yağmur suları geçirimsiz yüzeyler tarafından emilemeyip yüzeysel akışa neden olmakta ve sonucunda sel, taşkın vb. gibi çevresel problemlere yol açmaktadır. Bu problemlere çözüm oluşturması sebebiyle dünya genelinde alternatif yaklaşımlara doğru bir eğilim olmaktadır. Bu yaklaşımlardan biride yeşil altyapı/düşük etkili gelişim bileşenleridir. Bu çalışmada yağmur suyunun meydana getirdiği sorunlara yeşil altyapı/düşük etkili gelişim bileşenleri gibi alternatif yaklaşımlarla çözüm üretilmeye çalışılmıştır. Bu bağlamda yapılaşmanın yaşandığı Malatya kent merkezinde, yağmur suyunun meydana getirdiği yüzeysel akışların belirlenmesi ve düşük etkili gelişim bileşenlerinin etkinliğinin değerlendirilmesi amacıyla süreç tabanlı bir yağmur suyu yönetim modeli SWMM (Storm Water Management Model) uygulanarak çeşitli simülasyon çalışmaları gerçekleştirilmiştir. Dört farklı düşük etkili gelişim bileşeninin; yeşil çatı (1), yağmur varilleri (2), geçirimli kaplamalar (3), ve yağmur bahçeleri (4), planlanan alanın uygun kısımlarına belirli oranlarda entegre edilmesiyle gerçekleştirilen simülasyon çalışmalarında toplam yüzeysel akışlarda; yeşil çatı sistemlerinin kullanılmasıyla %2.15, yağmur varilleri kullanılmasıyla %8.10 ve eşit oranda geçirimli kaplama sistemleri ve yağmur bahçeleri kullanılmasıyla ise her iki bileşen için %6.60 oranında bir düşüş meydana gelmiştir. Bütün bileşenler birbiriyle entegreli olarak kullanıldığında ise yağmur suyunun meydana getirdiği yüzeysel akışlar %22.20 oranında azalarak bu sistemlerin kentsel alanlarda geleneksel altyapı sistemlerine alternatif olarak kullanılabileceği tespit edilmiştir.

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Investigating the hydrological performance of green roofs using storm water management model

Cited by 14 publications

References 20 publications

Hydrologic Effectiveness and Economic Efficiency of Green Architecture in Selected Urbanized Catchment

Hydrologic Effectiveness and Economic Efficiency of Green Architecture in Selected Urbanized Catchment

Increasing water retention capacity via Grey roof to green roof transformation

Yeşil Altyapı Sistemleri Kapsamında Yağmur Suyu Yönetimi: Malatya Kent Örneği

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