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NOTE: DATA describes the factors used to calculate pressures. <br />BASE EQUATIONS: <br />External pressure = gGCp <br />Internal pressure = gGCpi <br />NOTE: Where applicable for component design add the <br />positive external pressure to the Negative internal <br />pressure. Then check the case of Negative external <br />pressure added to positive internal pressure. <br />NOTE: Wind is perpendicular to side L walls. Wind can be <br />in any direction for roofs. <br />NOTE: After combining pressures if the absolute value is <br />less than 10 psf, use 10 psf for design! <br />DATA DESC: kz=exposure coeff., kzt=; errain wind coeff. <br />G=gust factor, Cp=pressure cocf., q=velocity pressure <br />