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NYC Building Code

§ 1609.4.1 — § 1609.4.1

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What is NYC BC § 1609.4.1?

Quick Answer

This section outlines the method for determining wind exposure for buildings or structures based on selected wind directions. It specifies that exposures in the two upwind sectors, extending 45 degrees on either side of the wind direction, must be evaluated to identify the highest wind loads. Applies to building owners assessing structural integrity against wind forces.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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1609.4.1 Wind directions and sectors.

BC § 1609.4.1

For each selected wind direction at which the wind loads are to be evaluated, the exposure of the building or structure shall be determined for the two upwind sectors extending 45 degrees (0.79 rad) either side of the selected wind direction. The exposures in these two sectors shall be determined in accordance with Sections 1609.4.2 and 1609.4.3 and the exposure resulting in the highest wind loads shall be used to represent winds from that direction.

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