Wind loads on low buildings with 4:12 gable roofs in open country and suburban exposures

Case, Peter; Isyumov, N.

doi:10.1016/s0167-6105(98)00136-6

Cited by 32 publications

(16 citation statements)

References 2 publications

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“…Measurement of the pressure coefficient is thus not distorted; as the systematic error of 10% at the windward side of the model occurs when the blockage is higher than 5% while for the leeward side it is even less, see [3]. According to [4], the correction effect by blockage (calculated according for the model over the entire height of the tunnel) and used for the dimensions of the presented building model is only 6%. It can therefore be assumed that for the measured case in which pressure is determined on the roof it is not necessary to consider a correction.…”

Section: Model Preparationmentioning

confidence: 99%

“…Also the type of the exposure (terrain) is important. The paper [4] discusses the phenomenon that the suburban exposure produces lower wind loads than those experienced in the open country and compares the local pressures on low buildings with gable roof. Another paper, [5] analyses the wind pressure on gable roof buildings, through comparisons with existing results and relative wind load codes.…”

Section: Introductionmentioning

confidence: 99%

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Measurements of dynamic wind pressures on gable roofs – comparison with ČSN EN 1991-1-4

et al. 2017

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Abstract. The contribution is dealing with the wind tunnel measurements of dynamic pressures on the canopy roofs. It compares experimentally determined pressure coefficients Cp with the values in ČSN EN 1991-1-4 and former code ČSN 73 0035 as well. The pressures are expressed by the dynamic values. Thus, the averaged values are presented together with the fluctuating part, which significantly contributes to the overall loading. The measurement is carried out at two roof models, two basic directions, and two turbulence intensities.

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Section: Model Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Measurements of dynamic wind pressures on gable roofs – comparison with ČSN EN 1991-1-4

et al. 2017

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“…Kanda and Maruta [2] investigated the characteristics of long low-rise building with gable roof for the case of large aspect ratio. Case and Isyumov [3] showed that the suburban exposure produces lower wind loads than those experienced in the open country exposure by the comparisons of local pressures and selected structural loads on low buildings with 4 : 12 gable roof.…”

Section: Introductionmentioning

confidence: 99%

Wind Tunnel Tests for Wind Pressure Distribution on Gable Roof Buildings

Jing

2013

The Scientific World Journal

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Gable roof buildings are widely used in industrial buildings. Based on wind tunnel tests with rigid models, wind pressure distributions on gable roof buildings with different aspect ratios were measured simultaneously. Some characteristics of the measured wind pressure field on the surfaces of the models were analyzed, including mean wind pressure, fluctuating wind pressure, peak negative wind pressure, and characteristics of proper orthogonal decomposition results of the measured wind pressure field. The results show that extremely high local suctions often occur in the leading edges of longitudinal wall and windward roof, roof corner, and roof ridge which are the severe damaged locations under strong wind. The aspect ratio of building has a certain effect on the mean wind pressure coefficients, and the effect relates to wind attack angle. Compared with experimental results, the region division of roof corner and roof ridge from AIJ2004 is more reasonable than those from CECS102:2002 and MBMA2006.The contributions of the first several eigenvectors to the overall wind pressure distributions become much bigger. The investigation can offer some basic understanding for estimating wind load distribution on gable roof buildings and facilitate wind-resistant design of cladding components and their connections considering wind load path.

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“…Some authors have focused their studies on local wind loads on roofs and facades (Ahmad and Kumar, 2001;Case and Isyumov, 1998;Ho et al, 1990;Jozwiak et al, 1995;Khanduri et al, 1998, Lam et al, 2008, 2009, whereas some others have focused on the overall structural loads on buildings, including the changes on the windinduced dynamic response of tall buildings due to other upstream buildings (Khanduri et al, 1998;Lia et al, 2006;Niemann and Kopper, 1998;Tang and Kwok, 2004;Xie and Gu, 2007;Zhang et al, 1995). The influence of the urban environment normally reduces the suction loads on the low-buildings as they are embedded in the surroundings (Case and Isyumov, 1998). However, in the case of two buildings (or a less dense configuration of buildings) an increase of the wind suctions has been also pointed out (Ahmad and Kumar, 2001;Jozwiak et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Influence of an upstream building on the wind-induced mean suction on the flat roof of a low-rise building

Pindado

Meseguer

Franchini

2011

Journal of Wind Engineering and Industrial Aerodynamics

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The effect of an upstream building on the suction forces on the flat roof of a low-rise building placed in the wake of the former is analyzed. The analysis has been performed by wind tunnel testing of a flat roof, low-rise building model equipped with pressure taps on the roof and different block-type buildings (only configurations where the upstream building is as high or higher than the downstream one are considered in this paper). The influence of the distance between both buildings on the wind loads on the downstream building roof is analyzed, as well as the height of the upstream one and the wind angle of incidence. Experimental results reveal that the wind load increases as the relative height of the upstream building increases, the wind load being highest for intermediate distances between buildings, when a passage between them is formed.

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Wind loads on low buildings with 4:12 gable roofs in open country and suburban exposures

Cited by 32 publications

References 2 publications

Measurements of dynamic wind pressures on gable roofs – comparison with ČSN EN 1991-1-4

Measurements of dynamic wind pressures on gable roofs – comparison with ČSN EN 1991-1-4

Wind Tunnel Tests for Wind Pressure Distribution on Gable Roof Buildings

Influence of an upstream building on the wind-induced mean suction on the flat roof of a low-rise building

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