| Title |
Comparison of Peak External Pressure Coefficients with Experiment and Wind Load Provisions |
| Authors |
Kong, Yun-Bae ; Lee, Jong-Won ; Shin, Sung-Woo |
| Keywords |
Low-rise Building ; Wind Load Provisions ; Peak External Pressure Coefficients |
| Abstract |
This study has compared the equivalent external pressure coefficients, (GCpf)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 database2). 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 and suburban terrain conditions1). (GCpf)eq was re-normalized based on the external pressure coefficients, GCpf, of ASCE 7-10. When compared to (GCpf)eq of the experiment data with 4.9m of eaveheight in open terrain, consequently, ASCE7-10(81%) ,NBCC2010 (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%. When compared to (GCpf)eq of the experiment data in suburban terrain, in addition, the same pattern was observed in most code. |