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Anchor Bolts Retro Grid 2 <br />CHECK FASTENER SHEAR STRENGTH : <br />Vs = 7865 lbs <br />f Vs =5.11225 k >Vua [Satisfactory] <br />where :f =0.65 (Table 4 ESR 2508) <br />CHECK CONCRETE BREAKOUT STRENGTH FOR SHEAR LOAD : <br />=0.747 k >Vua [Satisfactory] <br />where :f =0.7 Ca1 = C =1.750 <br /> yc,V term is 1.0 for location where concrete cracking is likely to occur. <br /> l term is load bearing length of the anchor for shear, not to exceed 8d. <br />Avco =4.5(Ca1)2 =13.78 in2 <br />Avc =2(1.5Ca1)2 =13.78 in2 <br />CHECK PRYOUT STRENGTH FOR SHEAR LOAD : <br />Vcp = min(KcpNa,KcpNcb) <br />Na =7.42 k <br />Ncb =11.57 k <br />Vcp =14.834 k >Vua [Satisfactory] <br />where :f =0.7 <br />kcp =2.0 for hef > 2.5 in. <br />f Vcp =10.3839 k <br />DETERMINE DESIGN SHEAR STRENGTH : <br />=0.747 K <br />CHECK TENSION AND SHEAR INTERACTION : <br />Since Nua >0.2 f Nn and <br />Vua <0.2 f Vn the full tension design strength is permitted. <br />The interaction equation must be used <br />0.47 <1.2 [Satisfactory] <br />Summary of Dimensional Properties of Fasteners <br />Effective <br />Gross Area of <br />Area of Threaded <br />Fastener Fastener Heavy Heavy Hardened <br />( in2 )( in2 )Square Hex Washers <br />0.250 1/4 0.049 0.032 0.142 0.201 0.117 0.167 0.258 <br />0.375 3/8 0.110 0.078 0.280 0.362 0.164 0.299 0.408 <br />0.500 1/2 0.196 0.142 0.464 0.569 0.291 0.467 0.690 <br />0.625 5/8 0.307 0.226 0.693 0.822 0.454 0.671 1.046 <br />0.750 3/4 0.442 0.334 0.824 1.121 0.654 0.911 1.252 <br />0.875 7/8 0.601 0.462 1.121 1.465 0.891 1.188 1.804 <br />1.000 1 0.785 0.606 1.465 1.855 1.163 1.501 2.356 <br />1.125 1 1/8 0.994 0.763 1.854 2.291 1.472 1.851 2.982 <br />1.250 1 1/4 1.227 0.969 2.288 2.773 1.817 2.237 3.682 <br />1.375 1 3/8 1.485 1.160 2.769 3.300 2.199 2.659 4.455 <br />1.500 1 1/2 1.767 1.410 3.295 3.873 2.617 3.118 5.301 <br />1.750 1 3/4 2.405 1.900 ---4.144 6.541 <br />2.000 2 3.142 2.500 ---5.316 7.903 <br />HexSquare( in ) <br />Fastener <br />Diameter <br />Bearing Area of Heads, Nuts, and Washers <br />( Ab ) ( in2 ) <br />0.2 <br />'1.5 <br />, , , ,7V V <br />cb bcd V c V cd V c V c <br />Vo Vo <br />lA A d fV V cdA Af f fy y y y   = =      <br />()min , ,n s cb cpV V V Vffff= <br />ua ua <br />n n <br />N V <br />N Vf f+ = <br />A2 <br />1311 N Towner St <br />9/24/2024