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19011 Wood-Sno Road NE,Suite 100 <br /> BTLWoodinville,WA 98072-4436 <br /> Phone:425-914-8448 i <br /> ENGINEERING Fax:425-821-2120 <br /> Stud Wall Design <br /> Based on 2018 NDS Combined axial and bending formula: <br /> [f./FJ2+fb/Fb'11-(f,./F.E)1 < 1 in which: F,E = 0.822(Emin')/(2e/d)2 <br /> Wall: Interior Walls Wall Height: 9 ft <br /> Desired Stud Spacing: 24 in oc <br /> No Fire Rating 9W Design Axial Dead Load: 203 plf <br /> 2x4 qV Design Axial Live Load: 540 pif <br /> SPF Stud qW Design Axial Snow Load: 0 plf <br /> Design Lateral Pressure(0.6W): 5 psf <br /> Deflection Criteria: U 180 <br /> STUD CHECK 6e/d < 50 OK <br /> D+0.6W(CD= 1.60) <br /> [f,/F,]2+fb/Fb'11-(f./FcE)1 = 0.41 < 1 OK <br /> f./F.E2+(fb/FbE)L= 0.00 < 1 OK <br /> D+0.75L+0.75(0.6W)+0.75S (CD = 1.60) <br /> [f./F.']2+/fb/Fb'[1-(f,/F�E)I= 0.99 < 1 OK <br /> fc'FCE2+ (fb/FbE)'= 0.00 < 1 OK <br /> D+0.75L+0.75S (Cc= 1.15) <br /> fc/F� = 0.69 < 1 OK <br /> D+L(CI)= 1.0) <br /> fc/F.'= 0.86 < 1 OK <br /> Deflection (No Increase for Load Duration): <br /> Defl: U 180 = 0.60 0.23 < 0.60 OK <br /> SPF Stud 2x4 @ 24 oc OK <br /> PLATE CRUSHING CHECK' <br /> Checks Crushing for Stud Spacing` <br /> No Stress Increase for Load Duration <br /> Hem Fir Plates: f./F,- ' = 0.46 < 1 OK <br /> Douglas Fir Plates: f,/F,= 0.30 < 1 OK <br /> Plate must also be checked for bending. <br /> 2 Check on crushing only applies to stud spacing. Joists above <br /> must also be checked for crushing effect on plate. <br /> Also, no stress increase is allowed due to load duration. <br /> Date: 1/27/2021 <br /> Page: M 1 .3 <br />