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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: 1X <br />Number of Story: 2 Section width: 39(ft)Section length: 33(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 = 39(ft), L = 33(ft), H = 23(ft)-->L/B = 0.85, H/L = 0.7 <br />Wall coefficient: Cpw = 0.8, Cpl = -0.5 <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 =1.17, SD1 = 2FvS1/3 =0, <br />Seismic design category: D, I = 1, 0.7*V = 0.7*SDS*I*W/Rx = 0.7*1.17*1*W/6.5 = 0.126*W <br />Total Seismic Load = 90.72 + 118.31 = 209.03 PLF <br />Redistrib: 720*19 + 939*9 = 22131 PLFxFT <br />DIAPHRAGM & CHORD FORCE PER ASCE07-16 SECTION 12.10 <br />ROOF DIAPHRAGM <br />Max shear = 184.59 x 39 / (2 x 33) = 109.08 PLF <br />Use: 15/32" apa rated unblock 32/16 w/8d common nails at 6", 6", 12" o.c. <br />Chord force = 184.59 x 39^2 / (8 x 33) = 1063.49 LBS <br />Splice w/ min. (6) 16d sinker nails each side of splice at 8" o.c. (standard construction) <br />FIRST FLOOR DIAPHRAGM <br />Max shear = 124.96 x 39 / (2 x 33) = 73.84 PLF <br />Use: 23/32" apa rated unblock w/10d common nails at 6", 6", 12" o.c. <br />Chord force = 124.96 x 39^2 / (8 x 33) = 719.94 LBS <br />Splice w/ min. (4) 16d sinker nails each side of splice at 8" o.c. (standard construction) <br />(z, Kz, qz, P): (23, 0.93, 24.46, 27.07); (19.5, 0.9, 23.62, 26.5); (15, 0.85, 22.35, 25.64) <br />ROOF <br />Roof = 15*33 = 495 PLF <br />Wall = 15*2*4.5 + 10*2*4.5 = 225 PLF <br />Shear = 0.126(495+225) = 0.126*720 = 90.72 PLF <br />FIRST FLOOR <br />Roof + Floor = 15*7 + 13*33 = 534 PLF <br />Wall = 15*2*4.5 + 15*2*4.5 + 10*2*4.5 + 10*1*4.5 = 405 PLF <br />Shear = 0.126(534+405) = 0.126*939 = 118.31 PLF <br />Plate height: ROOF = 19(ft); FIRST FLOOR = 9(ft) <br />SHEAR ROOF = 209.03*720*19/22131 = 129.21 PLF <br />SHEAR FIRST FLOOR = 209.03*939*9/22131 = 79.82 PLF <br />SHEAR ROOF = 0.6*W = 128.3(plf) <br />SHEAR FIRST FLOOR = 0.6*W = 153.84(plf) <br />ROOF <br />FIRST FLOOR <br />129.21 PLF <br />153.84 PLF <br />SEISMIC GOVERN <br />WIND GOVERN <br />Page 6 of 57 <br />1834 W Third St & <br />#2,33/21/2025