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ti <br /> '"' Seattle Genetics - 8/4%2D23 ' �'� <br /> EC Ll PS E <br /> ENGINEERING Everett,WA 98203 RVC <br /> Anchor Analysis Cont.: <br /> Check For Concrete Breakout-Uplift <br /> kcr= 17 Coeff. For Concrete Breakout Strength (ACI Sec. 17.4.2.2) <br /> Aa= 1 Modification Factor for Lightweight Concrete <br /> Nb= 5456 lbs. Concrete Breakout Strength for a Single Anchor(ACI Eq. 17.4.2.2a) <br /> AN.o= 95.1 in.2 Projected Concrete Failure Area of a Single Anchor(ACI Eq. 17.4.2.1c) <br /> AN.= 315.1 in.2 Projected Concrete Failure Area of an Anchor Group(ACI Sec. 17.4.2) <br /> Ncbg= 18081 lbs. Nominal Concrete Breakout Strength of Bolt Group (ACI Eq. 17.4.2.1b) <br /> ck= 0.65 Strength Reduction Factor <br /> `YNcbg= 8814 lbs. Factored Breakout Capacity of Bolt Group <br /> Nuag= 7123 lbs. Ultimate Uplift per Anchor Group <br /> Nua/clNn= 0.81 OK Utilization Such That kNcbg>_ N„a,g <br /> 1.5h,, <br /> ANc <br /> Check For Anchor Strength-Shear 1.5h1,�f <br /> N = 4 Number of Anchors in Group s2 <br /> Vsa= 6875 lbs. Nominal Shear Strength per Anchc <br /> = 0.65 Strength Reduction Factor c+z <br /> 4Vsa= 4469 lbs. Factored Shear Strength per Anch( _ <br /> Vua= 454 lbs. Ultimate Shear per Anchor <br /> Vua/cV„= 0.10 OK Utilization Such That cl)Vsa>_Vua <br /> Check For Concrete Pryout Strength-Shear <br /> N = 4 Number of Anchors in Group <br /> Ncpg= 18081 lbs. Nominal Concrete Breakout Strength of Bolt Group (ACI Eq. 17.4.2.1b) <br /> kip= 2 Coeff. For Pryout Strength (ACI Sec. 17.5.3.1) <br /> Vcpg= 36162 lbs. Nominal Pryout Strength for Anchor Group (ACI Eq. 17.5.3.1b) <br /> = 0.70 Strength Reduction Factor <br /> CI)Vcbg= 25313 lbs. Factored Pryout Strength of Bolt Group <br /> Vuag= 1818 lbs. Ultimate Shear per Anchor Group <br /> Vua/ctiVn= 0.07 OK Utilization Such That cl)Vcbg>_V„a,g <br /> Interaction of Tension and Shear Loads <br /> Nua/ckNo= 0.81 Max. Utilization for Tension (Uplift) <br /> Vua/�Vn= 0.10 Max. Utilization for Tension (Shear) <br /> Utilization= 0.72 OK Max. Utilization for Combined Tension and Shear <br /> 5/3 V 5/3 <br /> Eua l (- 1 ua < 1.0 (ACI'Section R17.6) <br /> � n <br /> 13/49 <br />