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___________________________________________________________________________________________________________ <br />28202 Cabot Road, Suite 300 <br />Laguna Niguel, CA 92677 <br />949-371-5238 <br />info@LagunaEngineers.com <br />110 mph <br />C <br />Gable Roof <br />20 degrees <br />20 ft <br />21.3 ft <br />0 ft <br />(Eq. 26.10-1) <br />0.90 (Table 30.3-1) <br />1.00 (Fig. 26.8-1) <br />0.85 (Table 26.6-1) <br />1.00 <br />110 mph (Fig. 26.5-1A) <br />II (Table 1.5-1) <br />qh = 23.75 <br />Zone 1 Zone 2 Zone 3 Positive <br />ya = 0.77 0.77 0.80 0.77 <br />GCp = -2.00 -2.88 -3.60 0.52 (Fig. 30.3) <br />Uplift Pressure = -36.6 psf -52.7 psf -68.4 psf 9.4 psf (Eq. 29.4-7) <br />ASD Uplift Pressure = -22.0 psf -31.6 psf -41.0 psf 9.6 psf <br />X Standoff Spacing = 4.00 4.00 2.67 <br />Y Standoff Spacing = 3.04 3.04166667 3.04166667 <br />Tributary Area = 12.17 12.17 8.11 <br />Dead Load on attachment = 37 lb 37 lb 24 lb <br />Footing Uplift (0.6D+0.6W) = -246 lb -363 lb -318 lb <br />Zone 1 Zone 2 Zone 3 Positive <br />ya = 0.80 0.80 0.80 0.80 <br />GCp = -2.00 -3.00 -3.60 0.57 (Fig. 30.3) <br />Uplift Pressure = -38.0 psf -57.0 psf -68.4 psf 10.9 psf (Eq. 29.4-7) <br />ASD Uplift Pressure (0.6W)= -22.8 psf -34.2 psf -41.0 psf 9.6 psf <br />X Standoff Spacing = 4.00 4.00 2.67 <br />Y Standoff Spacing = 1.75 1.75 1.75 <br />Tributary Area = 7.00 7.00 4.67 <br />Dead Load on attachment = 21.00 21.00 14.00 <br />Footing Uplift (0.6D+0.6W) = -147 lb -227 lb -183 lb <br />-363 lb <br />450 lb <br />Therefore, OK <br />Fastener = 1 - 5/16" dia. lag <br />Number of Fasteners = 1 <br />Embedment Depth = 2.5 <br />Pullout Capacity Per Inch = 250 lb <br />Fastener Capacity = 625 lb <br />w/ F.S. of 1.5 & DOL of 1.6= 667 lb <br />Therefore, OK <br />Wind Calculations <br />Maximum Design Uplift = <br />Design Wind Pressure Calculations <br />qh = 0.00256 * Kz * Kzt * Kd * Ke * V^2 <br />Kz (Exposure Coefficient) = <br />Kzt (topographic factor) = <br />Wind Speed <br />Exposure Category <br />Roof Shape <br />Roof Slope <br />Effective Wind Area <br />Per ASCE 7‐16 Components and Cladding <br />Input Variables <br />Fastener Capacity Check <br />Mean Roof Height <br />Ground Elevation <br />Kd (Wind Directionality Factor) = <br />667.2 lb capacity > 363 lb demand <br />Ke (Ground Elevation Factor) = <br />V (Design Wind Speed) = <br />Risk Category = <br />Standoff Uplift Calculations-Portrait <br />Standoff Uplift Calculations-Landscape <br />Standoff Uplift Check <br />Standoff Uplift Capacity = <br />450 lb capacity > 363 lb demand <br />Hoffmann Residence Santa Ana CA SE Calcs.xlsm 3 <br />2045 W Martha Ln <br />12/13/21