1603.1.4 Wind Design Data

The following information related to wind loads shall be shown, regardless of whether wind loads govern the design of the lateral forceresisting ...

-pressure resistance is determined by design analysis, data from approved design standards and analysis conforming to generally accepted engineering ...

The alternate wind design provisions in this section are simplifications of the ASCE 7 Directional Procedure. Buildings, structures and parts thereof shall be designed to withstand the minimum wind loads prescribed herein. Decreases in wind loads shall not be made for the effect of shielding by other structures. Wind loads on every building or structure shall be determined in accordance with Chapters 26 to 30 of ASCE 7 or provisions of the alternate all-heights method in Section 1609.6. The type of opening protection required, the ultimate design wind speed, V ult , and the exposure category for a site is permitted to be determined in accordance with Section 1609 or ASCE 7. Wind shall be assumed to come from any horizontal direction and wind pressures shall be assumed to act normal to the surface considered. Exceptions: 1. Subject to the limitations of Section 1609.1.1.1, the provisions of ICC 600 shall be permitted for applicable Group R-2 and R-3 buildings. 2. Subject to the limitations of Section 1609.1.1.1, residential structures using the provisions of AWC WFCM. 3. Subject to the limitations of Section 1609.1.1.1, residential structures using the provisions of AISI S230. 4. Designs using NAAMM FP 1001. 5. Designs using TIA-222 for antenna-supporting structures and antennas, provided the horizontal extent of Topographic Category 2 escarpments in Section 2.6.6.2 of TIA-222 shall be 16 times the height of the escarpment. 6. Wind tunnel tests in accordance with ASCE 49 and Sections 31.4 and 31.5 of ASCE 7. The wind speeds in Figures 1609.3(1), 1609.3(2) and 1609.3(3) are ultimate design wind speeds, V ult , and shall be converted in accordance with Section 1609.3.1 to nominal design wind speeds, V asd , when the provisions of the standards referenced in Exceptions 4 and 5 are used. The text of Section 6.2.2 of ASTM E1996 shall be substituted as follows: 6.2.2 Unless otherwise specified, select the wind zone based on the strength design wind speed, V ult , as follows: 6.2.2.1 Wind Zone 1‒ 130 mph ≤ ultimate design wind speed, V ult < 140 mph. 6.2.2.2 Wind Zone 2‒ 140 mph ≤ ultimate design wind speed, V ult < 150 mph at greater than one mile (1.6 km) from the coastline. The coastline shall be measured from the mean high water mark. 6.2.2.3 Wind Zone 3 ‒150 mph (58 m/s) ≤ ultimate design wind speed, V ult ≤ 160 mph (63 m/s), or 140 mph (54 m/s) ≤ ultimate design wind speed, V ult ≤ 160 mph (63 m/s) and within one mile (1.6 km) of the coastline. The coastline shall be measured from the mean high water mark. 6.2.2.4 Wind Zone 4 ‒ ultimate design wind speed, V ult >160 mph (63 m/s). The ultimate design wind speed, V ult , in mph, for the determination of the wind loads shall be determined by Figures 1609.3(1), 1609.3(2) and 1609.3(3). The ultimate design wind speed, V ult , for use in the design of Risk Category II buildings and structures shall be obtained from Figure 1609.3(1). The ultimate design wind speed, V ult , for use in the design of Risk Category III and IV buildings and structures shall be obtained from Figure 1609.3(2). The ultimate design wind speed, V ult , for use in the design of Risk Category I buildings and structures shall be obtained from Figure 1609.3(3). The ultimate design wind speed, V ult , for the special wind regions indicated near mountainous terrain and near gorges shall be in accordance with local jurisdiction requirements. The ultimate design wind speeds, V ult , determined by the local jurisdiction shall be in accordance with Section 26.5.1 of ASCE 7. In nonhurricane-prone regions, when the ultimate design wind speed, V ult , is estimated from regional climatic data ...

In areas designated in Table R301.2(1) as having local historical data documenting structural damage to buildings caused by wind speed-up at isolated ...

= Wind load on the glass due to ultimate design wind speed, V ult , computed in accordance with Section 1609. F ge = Nonfactored load in accordance with ASTM E1300. The value for sandblasted glass is for moderate levels of sandblasting. Wired glass sloped 15 degrees (0.26 rad) or less from vertical in windows, curtain and window walls, doors and other exterior applications shall be designed to resist the wind loads in Section 1609 for components and cladding according to the following equation: where: F gw = Wind load on the glass due to ultimate design wind speed, V ult , computed in accordance with Section 1609. F ge = Nonfactored load from ASTM E1300 using a thickness designation for monolithic glass that is not greater than the thickness of wired glass. For designs outside the scope of this section, an analysis or test data ...