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Dong Engineering Inc. <br />NEW MAIN HOUSE & JADU <br />1834 W.3RD ST, UNIT 2, SANTA ANA, CA 92703 <br />Job#: 240051 <br />Date: 7/17/2024 <br />PLAN: 1 <br />CODE: CBC 2022 <br />SECTION: 1Y <br />Number of Story: 2 Section width: 33(ft)Section length: 39(ft) <br />Base height: 0.5(ft)Slope roof height: 25.5(ft)Gable mean roof height: 22.5(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 = 33(ft), L = 39(ft), H = 23(ft)-->L/B = 1.18, H/L = 0.59 <br />Wall coefficient: Cpw = 0.8, Cpl = -0.46, Roof coefficient: Cpw = (0.17;-0.3), Cpl = -0.6 <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 =1.17, SD1 = 2FvS1/3 =0, <br />Seismic design category: D, I = 1, 0.7*V = 0.7*SDS*I*W/Ry = 0.7*1.17*1*W/6.5 = 0.126*W <br />Total Seismic Load = 102.06 + 138.98 = 241.04 PLF <br />Redistrib: 810*19 + 1103*9 = 25317 PLFxFT <br />DIAPHRAGM & CHORD FORCE PER ASCE07-16 SECTION 12.10 <br />ROOF DIAPHRAGM <br />Max shear = 209.33 x 33 / (2 x 39) = 88.56 PLF <br />Use: 15/32" apa rated unblock 32/16 w/8d common nails at 6", 6", 12" o.c. <br />Chord force = 209.33 x 33^2 / (8 x 39) = 730.64 LBS <br />Splice w/ min. (4) 16d sinker nails each side of splice at 8" o.c. (standard construction) <br />FIRST FLOOR DIAPHRAGM <br />Max shear = 142.27 x 33 / (2 x 39) = 60.19 PLF <br />Use: 23/32" apa rated unblock w/10d common nails at 6", 6", 12" o.c. <br />Chord force = 142.27 x 33^2 / (8 x 39) = 496.58 LBS <br />Splice w/ min. (3) 16d sinker nails each side of splice at 8" o.c. (standard construction) <br />(z, Kz, qz, P): (26, 0.95, 25.09, 26.75); (19.5, 0.9, 23.62, 25.74); (15, 0.85, 22.35, 24.88) <br />ROOF <br />Roof = 15*36 = 540 PLF <br />Wall = 15*2*4.5 + 10*3*4.5 = 270 PLF <br />Shear = 0.126(540+270) = 0.126*810 = 102.06 PLF <br />FIRST FLOOR <br />Roof + Floor = 15*11.5 + 13*33.5 = 608 PLF <br />Wall = 15*2*4.5 + 15*2*4.5 + 10*3*4.5 + 10*2*4.5 = 495 PLF <br />Shear = 0.126(608+495) = 0.126*1103 = 138.98 PLF <br />Plate height: ROOF = 19(ft); FIRST FLOOR = 9(ft) <br />SHEAR ROOF = 241.04*810*19/25317 = 146.53 PLF <br />SHEAR FIRST FLOOR = 241.04*1103*9/25317 = 94.51 PLF <br />SHEAR ROOF = 0.6*W = 133.71(plf) <br />SHEAR FIRST FLOOR = 0.6*W = 149.28(plf) <br />ROOF <br />FIRST FLOOR <br />146.53 PLF <br />149.28 PLF <br />SEISMIC GOVERN <br />WIND GOVERN <br />Page 7 of 57 <br />1834 W Third St & <br />#2,33/21/2025