ISE Incorporated <br />P.O. Box 50039 <br />Phoenix, Arizona 85076 <br />Phone: 602-403-8614 <br />FAX.- 623-321-1283 <br />Job: ATT EG46 Fox Hollow <br />Project: ISE Job No. 9437 <br />Client: Larson Camouflage <br />Date: June 11, 2015 <br />Designed by: MN <br />Anchor Bolt Development (ACI 318) <br />Anchor bolts are mechanically anchored with nuts and load plates at bottom of bolts. <br />Failure cones emanate at 35 degrees from top of nut. <br />The failure cones from the 4 bolts overlap and exit the sides of the caisson. <br />Concrete is assumed to crack and carry no load so, vertical reinforcing steel must be developed to transfer bolt loads. <br />Calculations presented below determine the required length of anchor bolt embedment <br />and reinforcing development necessary to transfer the design loads. <br />Minimum Development Length per ACI 318 12.2.2, Eq 12-1. <br />ld = db[fy/~(f,)](3/40)(cpr(p,k/2.5) : <br />where; fy = 60,000psi, f c = 4000 psi, and cptcp,k = 1.0, <br />ld = 28.46 db For # 10 Bar ld = 35.58 in. <br />Anchor Bolts are 2-1/4" X 84" with 72" Embedment on 39.75" Bolt Circle <br />Reinforcing Cage Diameter = 54.00 in. <br />Minimum Required AB Depth <br />cover= 3.00 in. <br />bottom grip = 3.00 in. <br />'/(Cage-BC) = 7.13 in. <br />lmi„ =1d + cover + bottom grip + /z(Cage-BC)/tan65 = 44.90 in. <br />Bolt Embedment Provided = 72.00 in. <br />Anchor bolts are restrained by fully developed reinforcement satisfying the requirements of 318 Appendix D. <br />