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<br />Structural Calculations <br />Prepared By: Jeffrey A. Schaefer, P.E. <br />JRS Engineering & Design <br />Project Address: 2039 Victoria Dr <br />Project Description: Detached ADU <br /> <br />Lateral Structural Calculations <br />Wind Load <br /> <br /> <br />Chapter 28 Envelope Procedure <br />Risk Category II Table 1.5-1 Addition <br />Basic Wind Speed (mph) 96 Fig 26.5-1; 26.5-2 Mean Roof Height 9 ft <br />Wind Directionality (Kd) 0.85 Table 26.6-1 Wall Height 13.50 ft <br />Exposure Category C Section 26.7 Max Roof 14 ft <br />Topographic Factor (Kzt) 1.0 Section 26.8 East/West Length 34.0 ft <br />Ground elevation factor (Ke) 1.0 Section 26.9 North/South Length 39.0 ft <br />Enclosure classification Enclosed Section 26.12 <br />Internal Pressure Coefficient (GCp) 0.18 Section 26.13 <br />Velocity pressure coefficient (Kz) 0.7 Table 26.10-1 <br />Velocity pressure (qz) 14.04 <br />Roof Angle 0.00 <br />External Pressure Coefficient Fig C28.3-1 <br />Roof Surface 2 -0.69 <br />Roof Surface 3 -0.37 <br />Windward Wall 0.4 <br />Leeward Wall -0.29 Roof Uplift <br />Wind pressure: Roof (psf) -12.21 Eq 28.3-1 -16194 lbs <br />-7.16 -12 psf <br />-7.72 -277 lbs/purlin end <br />-2.67 1.33 purlin spacing <br />Wind pressure: Wall (psf) 3.09 Eq 28.3-1 700 H2.5A Tie Strength <br />-6.60 <br />1 Floors <br />Addition Overturning (C) Uplift at Wall Base <br />Base Shear (West-East) 3474 lbs 17.68 plf Self Weight Sufficient 0 lbs <br />Base Shear (North-South) 3028 lbs 15.42 plf Self Weight Sufficient 0 lbs <br />Associated Criteria for Buildings and <br />Other Structures Building Profile <br />Total Anchorage <br />2039 N Victoria Drive <br />#24/28/2025