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Dong Engineering Inc. <br />GARAGE CONVERT TO ADU <br />2617 DEODAR ST, SANTA ANA, CA 92705 <br />Job#: 240140 <br />Date: 2/16/2025 <br />PLAN: 1 <br />CODE: CBC 2022 <br />SECTION: 1Y <br />Number of Story: 1 Section width: 21.5(ft)Section length: 18.5(ft) <br />Base height: 0(ft)Slope roof height: 13(ft)Gable mean roof height: 11.5(ft) <br />WIND PARAMETERS PER ASCE7-16, CHAPTER 27, MWFRS BUILDINGS OF ALL HEIGHTS: <br />Wind speed = 110, Wind exposure = C, Wind importance factor Iw = 1 <br />Coefficients: Kd = 0.85, Kzt = 1, G = 0.85, Gcpi = +/-0.18, omega = 1 <br />B = 47.5(ft), L = 52.5(ft), H = 13.5(ft)-->L/B = 1.11, H/L = 0.26 <br />Wall coefficient: Cpw = 0.8, Cpl = -0.48, Roof coefficient: Cpw = (0.13;-0.37), Cpl = -0.57 <br />Wind exposure = C-->anpha = 9.5, zg = 900 <br />Kz = 2.01*(15/zg)^(2/anpha)qz = 0.00256*Kz*Kzt*Kd*V^2*Iw P = G(Cpw*qz+Cpl*qh) <br />WIND LOAD: <br />SEISMIC PARAMETERS PER ASCE7-16, CHAPTER 12.8, ELF PROCEDURE: <br />Light frame wood-->Ry = 6.5, Site class :D, SDS = 2FaSs/3 =1.069, SD1 = 2FvS1/3 =0, <br />Seismic design category: D, I = 1, 0.7*V = 0.7*SDS*I*W/Ry = 0.7*1.069*1*W/6.5 = 0.1151*W <br />Total Seismic Load = 52.67 = 52.67 PLF <br />Redistrib: 457.5*9 = 4117.5 PLFxFT <br />DIAPHRAGM & CHORD FORCE PER ASCE07-16 SECTION 12.10 <br />ROOF DIAPHRAGM <br />Max shear = 75.24 x 21.5 / (2 x 18.5) = 43.72 PLF <br />Use: 15/32" apa rated unblock 32/16 w/8d common nails at 6", 6", 12" o.c. <br />Chord force = 75.24 x 21.5^2 / (8 x 18.5) = 235 LBS <br />Splice w/ min. (2) 16d sinker nails each side of splice at 8" o.c. (standard construction) <br />(z, Kz, qz, P): (15, 0.85, 22.35, 24.3) <br />ROOF <br />Roof = 15*18.5 = 277.5 PLF <br />Wall = 15*2*4.5 + 10*1*4.5 = 180 PLF <br />Shear = 0.1151(277.5+180) = 0.1151*457.5 = 52.66 PLF <br />Plate height: ROOF = 9(ft) <br />SHEAR ROOF = 52.67*457.5*9/4117.5 = 52.67 PLF <br />SHEAR ROOF = 0.6*W = 97.55(plf) <br />ROOF 97.55 PLF WIND GOVERN <br />8 of 14