Comparison of Wind Pressure Coefficients with Wind Load Provisions

Abstract:

This study has compared the equivalent external pressure coefficients, (GC_pf)_eq, with 6 wind load provisions and wind tunnel test data. The wind load provisions are the ASCE 7-10, NBCC 2010, AS/NZS 2011, EN 2005, AIJ 2004 and KBC 2009. Experiment data on low-rise building have been obtained at the University of Western Ontario (UWO) to contribute to the NIST aerodynamic database [. For the experiment, a model with 1:12 of roof slope and 4.9 and 12.2m of eave height was used under open terrain conditions (See also Ref. [). (GC_pf)_eq was re-normalized based on the external pressure coefficients, GC_pf, of ASCE 7-10. When compared to (GC_pf)_eq of the experiment data with 4.9m of eave height, consequently, ASCE 7-10 (81%), NBCC 2010 (84%), AS/NZS 2011 (70%), AIJ 2004 (68%) and KBC 2009 (53%) were all underestimated. Among them, KBC 2009 reveals the lowest value. On the contrary, EN2005 was overestimated with 122%. When the eave height was 12.2m, in addition, the same pattern was observed in most codes. EN2005 was slightly overestimated with 115%.

• Periodical: Advanced Materials Research (Volume 831)
• Pages: 124-128
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.831.124
• Online since: December 2013
• Authors: Jong Won Lee*, Yun Bae Kong, Sung Woo Shin
• Keywords: Building Codes, External Pressure Coefficients, Low-Rise Building

References

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