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Dong Engineering Inc. <br />ADU <br />3205 S.DEEGAN DR, SANTA ANA, CA 92704 <br />Job#: 240165 <br />Date: 4/15/2024 <br />PLAN: 1 <br />CODE: CBC 2022 <br />SECTION: 1X <br />Number of Story: 1 Section width: 20(ft)Section length: 44.5(ft) <br />Base height: 0(ft)Slope roof height: 15.5(ft)Gable mean roof height: 12.5(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 = 20(ft), L = 44.5(ft), H = 12.5(ft)-->L/B = 2.23, H/L = 0.28 <br />Wall coefficient: Cpw = 0.8, Cpl = -0.29 <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-->Rx = 6.5, Site class :D, SDS = 2FaSs/3 =1.038, SD1 = 2FvS1/3 =0, <br />Seismic design category: D, I = 1, 0.7*V = 0.7*SDS*I*W/Rx = 0.7*1.038*1*W/6.5 = 0.1118*W <br />Total Seismic Load = 104.8 = 104.8 PLF <br />Redistrib: 937.5*9 = 8437.5 PLFxFT <br />DIAPHRAGM & CHORD FORCE PER ASCE07-16 SECTION 12.10 <br />ROOF DIAPHRAGM <br />Max shear = 149.71 x 20 / (2 x 44.5) = 33.64 PLF <br />Use: 15/32" apa rated unblock 32/16 w/8d common nails at 6", 6", 12" o.c. <br />Chord force = 149.71 x 20^2 / (8 x 44.5) = 168.21 LBS <br />Splice w/ min. (1) 16d sinker nails each side of splice at 8" o.c. (standard construction) <br />(z, Kz, qz, P): (15, 0.85, 22.35, 20.68) <br />ROOF <br />Roof = 15*44.5 = 667.5 PLF <br />Wall = 15*2*4.5 + 10*3*4.5 = 270 PLF <br />Shear = 0.1118(667.5+270) = 0.1118*937.5 = 104.81 PLF <br />Plate height: ROOF = 9(ft) <br />SHEAR ROOF = 104.8*937.5*9/8437.5 = 104.8 PLF <br />SHEAR ROOF = 0.6*W = 99.28(plf) <br />ROOF 104.8 PLF SEISMIC GOVERN <br />Page 6 of 20 <br />3205 S Deegan Dr <br />#23/10/2025