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Project: Proposed Garage Conversion to ADU Sheet 12 <br />Address:2122 N. LEWIS ST AND 2122 N. LEWIS ST. #2 Job No.2024-22 <br />SANTA ANA, CA 92706-2236 Date: <br />B DESIGN OF DIAPHRAGM SHEATHING <br />B.1 ROOF DIAPHRAGM <br />1.Diaphragm Load =4.780 kips w =113.70 plf <br />ASD Design =3.586 kips <br />With Redeundancy (1.3) =4.662 kips <br />2.Diaphragm Span (L) = 41.00 ft Ratio =2.05 :1 < 4:1 OK <br />Diaphragm Depth (D) = 20.00 ft <br />. <br />3.Diaphragm Shear Force = 0.5 x Diaphragm Load =2,330.8 lbs <br />4.Diaphragm Unit Shear Force =0.5*w*L/D =116.54 plf <br />5.Using nominal 15/32 Thk. Plywood with 8D nailing at 6"-6"-12" <br />Blocked Diapragm 175 plf >116.54 plf OK <br />Per CBC Table 2306.2 <br />On Plan: Use 15/32" OSB (Rated Sheathing) with Radiant Barrier <br />CHORD DESIGN - (METAL STRAP DESIGN WHERE NEEDED) <br />Moment = 0.125 x w x L^2 =23,891.04 ft-lbs. <br />T = C = Moment / D 1,194.55 lbs. <br />Using MSTA36- Strap, Capacity =2,000.00 lbs.>1,194.55 OK <br />KM Associates Inc Structural Calculation Sheet <br />5/12/2024 <br />2122 N Lewis St & #2 <br />101118132-338/13/2024