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PB STRUCTURES Foundation Design Job No.18050 <br /> PETER M BLAKELY,SE 3020 Gedney street 06.19.18 <br /> WA LICENSE 46754 Everett,WA 98201 <br /> SEISMIC LOADS ASCE 7-12,SECTION 12.14 Page: 5 �r <br /> SIMPLIFIED ALTERNATIVE STRUCTURAL DESIGN CRITERIA FOR SIMPLE BEARING WALL <br /> OR BUILDING FRAME SYSTEMS <br /> SEISMIC DESIGN CATEGORY= D ASD INCREASE FACTOR=1.2 (12.4.3.3) <br /> RISK CATEGORY= 1.5-1 CAN BE COMBINED WITH DOL PER NDS <br /> SITE CLASS= B <br /> SEISMIC FORCE RESISTING SYSTEM = BEARING WALL <br /> R= 6.5 EW,WOOD SHEAR WALL p= 1.0 EXCEPTION A <br /> R= 6.5 NS,WOOD SHEAR WALL Eh= p*Qe= Qe <br /> V= Cs*W= ULT ASD Ie= 1 1.5.2 <br /> Cs= Sds/R= 0.14 0.10 Ss= 1.338 S1= 0.508 <br /> Cs= Sds/R= 0.14 0.10 Sms= 1.338 Sml= 0.763 <br /> T= 0.02*H= 0.44 (12.8-7) Sds= 0.892 Sd1= 0.508 <br /> K= 1.05 <br /> ASD LOAD COMBINATIONS E=Eh+Ev(ASD EQ 5 AND 6) (12.14-3) <br /> 5. (1.0+0.14Sds)D+0.7Qe E=Eh-Ev(ASD EQ 8) (12.14-4) <br /> 6. (1.0+0.105Sds)D+0.525Qe+0.75L+0.75S Eh=Qe (12.14-5) <br /> 8. (0.6-0.14Sds)D+0.7Qe Ev=0.2*Sds*D(=0 WHERE Sds<0.125) (12.14-6) <br /> OVERSTRENGTH ASD LOAD COMBINATIONS OVERSTRENGTH FACTOR <br /> 5. (1.0+0.14Sds)D+1.75Qe Em=Emh+EvN (ASD EQ 5 AND 6) (12.14-7) <br /> 6. (1.0+0.105Sds)D+1.313Qe+0.75L+0.75S Em= Emh-Ev(ASD EQ 8) (12.14-8) <br /> 8. (0.6-0.14Sds)D+1.75Qe Emh=2.5*Qe <br /> WALL ANCHORAGE DESIGN FORCES <br /> Fp= 0.4*Ka*Sds*Wp= 0.45 *Wp (12.14-10;12.14.8-SIMPLIFIED LAT FORCE PROCEDURE <br /> 0.31 *Wp ASD V= F*Sds*W/R ASD(12.14-11) <br /> Fp MIN= 0.2*Ka*Wp= 0.25 *Wp Vew= 0.16688 *W 0.12 *W <br /> 0.18 *Wp ASD Vns= 0.16688 *W 0.12 *W <br /> Ka= 1.0* (Lf/100)= 1.26 (12.14-11; F= 1.1 (2 STORY BUILDING) <br /> Ka MAX= 2 Fa= 1.1 (SOIL SITE) <br /> Lf= 26 Sds= 0.67*Fa*Ss= 0.98611 <br /> USE 12.4 PROCEDURE <br /> PO BOX 354,MAPLE VALLEY,WA 98038 <br /> 18050 3020 Gedney Structural Calcs Pages 2-5 425.691.0443/pete.pbstructures@gmail.com <br />