Search results for " roof"
showing 10 items of 76 documents
Evaluating the Environmental Performance of Green Roofs by a Life Cycle Approach: an Application of the LCA Method on a Case Study in Italy
2011
Forecasting green roofs’ potential in improving building thermal performance and mitigating urban heat island in the Mediterranean area: An artificia…
2023
Green roofs are widely used in hot or cold climates mainly because they are capable to improve the energy efficiency of buildings and, when implemented at a large scale, reducing air pollution and the urban heat island effect (UHI) in urban contexts. Artificial Neural Network (ANN) black-box algorithms are a valid alternative to studying complex systems. However, the literature highlights - quite surprisingly – none of the available research refers to coupling ANNs and green roofs in the Mediterranean area, where green roofs are instead considered one of the most suitable technologies to reduce the high cooling demand. Therefore, the objective of this research work is to create and validate…
Ein neues captorhinomorphes reptil aus dem thüringischen rotliegend (Unter-Perm; Ost-Deutschland)
1991
Thuringothyris mahlendorffae n.gen. n.sp. is described on the basis of the skull roof, palate, stapes and much of the postcranial skeleton from the Upper Rotliegend (Tambach-Schichten) of the Thuringian Forest in eastern Germany. The new taxon shows both protorothyridid and some captorhinid features. The interrelationships of the »Protorothyrididae«, primitive Captorhinidae, and earliest Diapsida are reviewd. The tetrapod material is used to reassess the biostratigraphic position of the fossil-bearing horizon.
Evaluation of Green Roof Ageing Effects on Substrate Hydraulic Characteristics
2020
The vegetated substrate of green roofs may undergo various chemical and physical changes with time. Minidisk infiltrometer (MDI) tests were conducted to assess the short-term variations of the near-saturated hydraulic conductivity, K0, in the extensive green roof test plot established at the University of Palermo. Sampling was repeated four times: before planting (Age 0) and then after four months (Age 1), seven months (Age 2) and ten months (Age 3). A total of 144 infiltration tests were conducted at two pressure heads, h0 = −3 cm and h0 = −0.5 cm and infiltration data analysed by the Zhang (Soil Science Society of America Journal 61(4):1024–1030, 1997) model. Both K-3 and K-0.5 underwent …
Green roof effects on the rainwater response in the Mediterranean area: first results of a Sicilian case study
2021
<p>Over the last decades, we have been witnessing an increasing frequency of urban floods often attributed to the interaction between intensification of rainfall extremes due to climate change and increasing urbanization. Consequently, many studies have been trying to propose different new alternatives to mitigate ground effects of ever more frequent and severe extreme rainfall events in a context of growing urbanization, such as rain gardens, green roofs, permeable parking lots, etc., which are commonly referred to as green infrastructures.</p><p>With this regard, one of the most promising mitigation solutions is represented by multilayer green roo…
Studies on sedum taxa found in Sicily (Italy) for mediterranean extensive green roofs
2018
One type of green roof whose function is ecological and environmental rather than aesthetic is the extensive green roof. Many studies have shown that Sedum performs very well compared to other hardy species in substrates of less than 10 cm. It seems that Sedum species are able to survive in very thin substrates; they tolerate extreme temperatures and sudden variations in temperatures, high levels of solar radiation, strong winds, poor substrate fertility and extreme drought. In particular, this paper looks at the potential of a number of species from the Sicilian taxa of the genus Sedum (Crassulaceae), which are considered to be those xerophytes most suited for use in extensive green roof s…
Installazione di un tetto verde multistrato in un tipico ambiente urbano del sud Italia
Il verde pensile è un sistema tecnologico che prevede l’utilizzo della vegetazione come strato superiore della copertura di un edificio, impiegato sia per le sue funzioni ambientali che per le sue caratteristiche estetiche (Cascone, 2019). Infatti, la realizzazione di un tetto verde, oltre al suo intrinseco valore ecologico, consente numerosi vantaggi economici ed ambientali rispetto alle coperture tradizionali (Berardi & Ghaffarianhoseini, 2014). Nel tempo, l’interesse nei confronti dei tetti verdi è sempre più cresciuto, sia per i benefici conseguibili che rispondono a molti degli obiettivi delle diverse politiche nazionali, europee e internazionali per la mitigazione e l’adattamento …
LA COPERTURA IN FERRO DEL POLITEAMA GARIBALDI. UNA INNOVATIVA SPERIMENTAZIONE NELLA PALERMO DEL XIX SECOLO
2015
The roofing of the nineteenth Politeama Garibaldi in Palermo creates to the designer, Giuseppe Damiani Almeyda, technical and architectural difficulties: in fact, if the scene roofing has been resolved applying established schemes, for the roofing of the stalls area, made years later, an efficient connection with the existing roofing and the external walls was manifested. The goal of this study is the knowledge of the iron structure, the production and processing techniques adopted for the realization of the roofing, also aimed to the recognition of the inspiring structural models, the connecting systems, the state of preservation. Through the analysis of the used shapes and techniques, the…
IL RECUPERO DELLE STRUTTURE LIGNEE DEL PORTICO PRINCIPALE DEL DUOMO DI MONREALE
2009
The green roofs for reduction in the load on rainwater drainage in highly urbanised areas
2021
AbstractRapid weather phenomena, particularly sudden and intense rainfall, have become a problem in urban areas in recent years. During heavy rainfall, urban rainwater drainage systems are unable to discharge huge amounts of runoff into collecting reservoirs, which usually results in local flooding. This paper presents attempts to forecast a reduction in the load on the rainwater drainage system through the implementation of green roofs in a case study covering two selected districts of Opole (Poland)—the Old Town and the City Centre. Model tests of extensive and intensive roofs were carried out, in order to determine the reduction of rainwater runoff from the roof surface for the site unde…