A driving rain exposure index for Norway

Rydock, James P.; Lisø, Kim Robert; Førland, Eirik J.; Nore, Kristine; Thue, Jan Vincent

doi:10.1016/j.buildenv.2004.11.018

Cited by 37 publications

(22 citation statements)

References 2 publications

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“…Contudo, o equipamento necessário para isso (medidor de parede vertical ou "driving rain gauge") não é um equipamento padrão em estações meteorológicas e, portanto, a chuva dirigida não é medida de maneira rotineira [9]. Seria, então, interessante que a chuva dirigida fosse mensurada através de dados usualmente lidos nas estações.…”

Section: Indice De Chuva Dirigida (Icd Anual Icd Direcional E Icd Meunclassified

Análise do índice de chuva dirigida em cidades do Paraná e sua importância no projeto de fachadas de edifícios

Medeiros

Batista²,

Rufato³

et al. 2017

Simpósio Paranaense De Patologia Das Construções

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Resumo:Tendo em vista a progressiva preocupação com a durabilidade das construções, torna-se necessário estabelecer métodos para análise da influência das condições ambientais sobre as estruturas. Neste contexto, este trabalho visa o estudo do fenômeno de chuva dirigida (chuva associada ao vento) e sua influência sobre a durabilidade de fachadas. A análise baseou-se nos dados de três estações metereológicas do estado do Paraná, localizadas nas cidades de Londrina, Maringá e Curitiba, buscando identificar as orientações de chuva dirigida mais criticas destas cidades. Analisouse a variação da chuva dirigida ao longo do tempo através dos Índices de Chuva Dirigida Anual, Mensal e Direcional, que indicam, respectivamente: o grau de exposição dessas cidades ao fenômeno de chuva dirigida, o índice de chuva dirigida crítico para a cidade e a orientação critica das preciptações associadas ao vento. Estes índices podem orientar os critérios de projeto de edificações nestas cidades. Segundo os resultados, para as cidades de Curitiba e Londrina as orientações críticas de fachada são Leste e Nordeste e para Maringá, Norte e Nordeste.Palavras-chave: Chuva Dirigida; Nível de Exposição; Índice de Chuva Dirigida Direcional; Durabilidade de Fachadas.Abstract: Establishing methods to analyse the influence of environmental conditions on structures is essential when considering the progressive concern with structures' durability. In this context, the present work aims to study the phenomenon of wind-driven rain (rain associated with wind) and its influence on durability of facades. The analysis was based on data from meteorological stations of three different cities in Paraná state: Londrina, Maringá and Curitiba. It sought to identify the most critical directions of wind-driven rain in those cities. The rainfall variation over time was analysed using annual, monthly and directional driving rain indexes, which indicate, respectively: those cities' degree of exposure to wind-driven rain phenomenon, the city's critical driving rain index and the critical orientation of precipitations in association with wind. Those indexes may guide building design criteria for those cities. According to results, for the cities of Curitiba and Londrina the critical facade orientations are East and Northeast while for Maringá, they are North and Northeast.

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Section: Indice De Chuva Dirigida (Icd Anual Icd Direcional E Icd Meunclassified

Análise do índice de chuva dirigida em cidades do Paraná e sua importância no projeto de fachadas de edifícios

Medeiros

Batista²,

Rufato³

et al. 2017

Simpósio Paranaense De Patologia Das Construções

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“…A series of climate-indices were developed or adapted to the Norwegian climate. Examples of such indices are wood decay (Lisø, 2006), frost decay (Lisø et al, 2007) and driving rain (Rydock et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Assessment of climate vulnerability in the Norwegian built environment

2011

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Abstract. The main trends expected for the change of Norwegian climate for this century are increasing temperatures, precipitation and wind. This indicates a probable increase of climate-related risks to the Norwegian built environment. Through co-operation between the Norwegian Meteorological Institute and SINTEF Building and Infrastructure, building and climate information have been combined to estimate changes in strain to the built environment due to climate change. The results show that the risk of wood decay will increase for the whole country. Almost two million buildings will be subject to an increase in risk of wood decay from medium to high level. Similar analyses have been performed for other climate indices, demonstrating a clear increase in potential damages due to water and humidity, while frost damage probably will decrease.

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“…Rydock et al (2005) used Lacy (1965 data as conversion factor, resulting from studies of 75 rain events during 16 years, where they had adopted that 1 m 2 /s corresponds to around 0,206 m or 206 mm of directed rain in vertical wall. The sum is taken over all the D angles which represent the wind blowing against the wall, including the sectors θ -80º a θ + 80º.…”

Section: Amount Of Driving Rain In Vertical Wall (I 0 )mentioning

confidence: 99%

“…In the studies carried out in Norway about the driving rain exposure in vertical wall, Rydock et al (2005) used the Equation 5 for establishing the accrued amount of rainwater in vertical surface for each direction. Rydock et al (2005) used Lacy (1965 data as conversion factor, resulting from studies of 75 rain events during 16 years, where they had adopted that 1 m 2 /s corresponds to around 0,206 m or 206 mm of directed rain in vertical wall.…”

Section: Amount Of Driving Rain In Vertical Wall (I 0 )mentioning

confidence: 99%

“…The scalar procedure is one of the types of procedure and the other being the directional driving rain (Bella et al, 2012). This index, usually computed annualy as DRI, has led many ountries to obtain maps of driving rain, such as the UK, Normay, Turkey, China, India, among others Bella et al, 2012;Lacy, 1971;Rydock et al, 2005;Sahal, 2005;Sauer, 1987;Chand;Bhargava, 2002). As parameters for classification of buildings and their respective regions in levels of aggression, Lacy (1977) adopts three levels of exposure to driving rain, according to the annual driven rain index (DRI).…”

Section: Introductionmentioning

confidence: 99%

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Relationship between the Deterioration of Multi Story Buildings Facades and the Driving Rain

Júnior

Carasek

2014

Revista de la Construcción

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In order to evaluate the behavior of facades in relation to driving rain, as well as the influence of the architectural elements in front of the deterioration, were calculated in this work the monthly directional driving rain index (dDRI-m) and the amounts of driving rain wall index (I0) to the city of Goiania, Brazil. Was performed a study of case over staining on facades through visual inspection and photographic record of buildings rendered with mortar and paint finish, with more than 12 story and construction aged 10 or under, located in the same city. Samples were collected on facades regions with stains for microbiological analyzes. As a result, it was found that facades of the same building are subject to different levels of moisture and deterioration, fact established by the correlation between the staining observed in the studies of case and the dDRI-m and I0. The stains, often described as dirt, showed the presence of microorganisms: filamentous fungi, phototrophics and actinomycetes. Resumen Con la finalidad de evaluar el comportamiento de fachadas en relación a la lluvia dirigida, así como la influencia de los elementos arquitectónicos en la deterioración, fueron calculados en este trabajo los índices de lluvia dirigida direccional mensual (ICDd-m) y las cantidades de lluvia dirigida sobre pared vertical (I0), para la ciudad de Goiânia-Brasil. También fue realizado un estudio de caso de manchas en fachadas por medio de inspección visual y registro fotográfico de edificios recubiertos con mortero y pintura, con más de 12 pisos y con 10 o menos años de construcción, localizados en la misma ciudad. De las muestras colectadas en regiones de las fachadas con manchas, fueron realizadas análisis microbiológicos. Como resultado, se constató que las fachadas de una misma edificación están sujetas a diferentes niveles de humidad y deterioración, hecho comprobado por la correlación entre las manchas observadas en los estudios de caso y los índices ICDd-m y I0. Las manchas muchas veces descritas como suciedad, presentan microorganismos del tipo hongos filamentosos, actinomicetos y fototrofos.

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A driving rain exposure index for Norway

Cited by 37 publications

References 2 publications

Análise do índice de chuva dirigida em cidades do Paraná e sua importância no projeto de fachadas de edifícios

Análise do índice de chuva dirigida em cidades do Paraná e sua importância no projeto de fachadas de edifícios

Assessment of climate vulnerability in the Norwegian built environment

Relationship between the Deterioration of Multi Story Buildings Facades and the Driving Rain

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