On the deviation of mean pressure coefficients in wind loading standards for a low-rise, gable-roofed building with boundary walls

The provisions in wind loading standards routinely overlook the influence of nearby small-size objects on loads low-rise buildings. One such object is boundary walls that significantly modify surrounding field thereby affecting To investigate this phenomenon, four low-rise, gable-roofed buildings: one with and three without were tested a layer tunnel. calculated external pressure coefficients ( C ¯ p ) subsequently compared given ASCE 7 (2016), NBCC (2015), EN 1991-1-4 (2005), AS/NZS 1170.2 (2011). comparison showed good agreement for using 7-16 (2016) (2011) building those tunnel test. However, all overestimated buildings because they did not account shielding effect walls. largest discrepancies magnitude distribution observed windward wall upwind roof slope. These modifications strong dependency upstream lateral separation distances between