Laserfiche WebLink
Dong Engineering Inc. <br />2 ADU'S <br />512-514 HUYLARS LN, SANTA ANA, CA 92703 <br />Job#: 250195 <br />Date: 5/21/2025 <br />PLAN: 1 <br />CODE: CBC 2022 <br />SECTION: 1X <br />Number of Story: 1 Section width: 33(ft)Section length: 56.5(ft) <br />Base height: 1.5(ft)Slope roof height: 15(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 = 35(ft), L = 56.5(ft), H = 13(ft)-->L/B = 1.61, H/L = 0.23 <br />Wall coefficient: Cpw = 0.8, Cpl = -0.38, 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-->Rx = 6.5, Site class :D, SDS = 2FaSs/3 =1.06, SD1 = 2FvS1/3 =0, <br />Seismic design category: D, I = 1, 0.7*V = 0.7*SDS*I*W/Rx = 0.7*1.06*1*W/6.5 = 0.1142*W <br />Total Seismic Load = 143.49 = 143.49 PLF <br />Redistrib: 1257*8 = 10056 PLFxFT <br />DIAPHRAGM & CHORD FORCE PER ASCE07-16 SECTION 12.10 <br />ROOF DIAPHRAGM <br />Max shear = 215.6 x 33 / (2 x 56.5) = 62.96 PLF <br />Use: 15/32" apa rated unblock 32/16 w/8d common nails at 6", 6", 12" o.c. <br />Chord force = 215.6 x 33^2 / (8 x 56.5) = 519.44 LBS <br />Splice w/ min. (3) 16d sinker nails each side of splice at 8" o.c. (standard construction) <br />(z, Kz, qz, P): (16.5, 0.87, 22.8, 22.67); (15, 0.85, 22.35, 22.36) <br />ROOF <br />Roof = 18*56.5 = 1017 PLF <br />Wall = 15*2*4 + 10*3*4 = 240 PLF <br />Shear = 0.1142(1017+240) = 0.1142*1257 = 143.55 PLF <br />Plate height: ROOF = 8(ft) <br />SHEAR ROOF = 143.49*1257*8/10056 = 143.49 PLF <br />SHEAR ROOF = 0.6*W = 110.74(plf) <br />ROOF 143.49 PLF SEISMIC GOVERN <br />7 of 26