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ESR-3699 Page 11 of 18 <br /> <br /> <br />TABLE 1—INSTALLATION INFORMATION FOR TAPCON+ SCREW ANCHORS <br /> AND SAMMYS THREADED ROD ANCHORS1,5 <br />CHARACTERISTIC SYMBOL UNITS <br />NOMINAL ANCHOR DIAMETER (inch) <br /> 1/4 1/4 3/8 1/2 <br />Head Style — — <br />SAMMYS for <br />Vertical Rod <br />(CCST 516) <br />SAMMYS for <br />Horizontal Rod <br />(SW-CCST 516) <br />Hex Head Hex Head Hex Head <br />Nominal Outside <br />diameter (Shank) da in. 0.25 0.25 0.38 0.50 <br />Nominal Outside <br />diameter (threads) — in. 0.33 0.33 0.46 0.59 <br />Drill bit specification dbit in. 1/4 Tapcon+ Bit <br />1/4 <br />Tapcon+ <br />Bit <br />1/4 <br />ANSI <br />Bit <br />3/8 <br />ANSI <br />Bit <br />1/2 <br />ANSI <br />Bit <br />Minimum base plate <br />clearance hole <br />diameter <br />dh in. Not applicable2 3/8 1/2 5/8 <br />Maximum installation <br />torque4 Tinst, max ft-lbf Not applicable3 20 50 70 <br />Maximum Impact <br />Wrench Torque <br />Rating <br />Timpact, max ft-lbf Not applicable3 115 200 345 <br />Effective embedment <br />depth hef in. 1.67 1.45 1.78 1.32 2.17 3.02 <br />Minimum nominal <br />embedment depth5 hnom in. 21/4 2 21/2 2 3 4 <br />Minimum hole depth hhole in. 21/2 21/4 23/4 21/4 31/4 41/4 <br />Minimum concrete <br />member thickness hmin in. 4 4 4 4 6 <br />Critical edge distance cac in. 21/2 21/2 41/2 3 4 5 <br />Minimum edge <br />distance cmin in. 11/2 11/2 11/2 21/2 13/4 21/2 <br />Minimum spacing smin in. 3 3 3 3 31/2 3 <br />For SI: 1 inch = 25.4 mm, 1 ft-lbf = 1.356 N-m. <br />1The data presented in this table is to be used in conjunction with the design criteria of ACI 318 -19 Chapter 17, ACI 318-14 <br />Chapter 17 or ACI 318-11 Appendix D, as applicable. <br />2The Sammys Anchor is installed without a base plate, directly into the concrete. <br />3Installation must be performed with an ITW torque limiting nut driver, as applicable. See Section 4.3 for additional information. <br />4Tinst,max applies to installations using a calibrated torque wrench. <br />5For the 3/8-inch-, and 1/2-inch-diameter Tapcon+ anchors, the design of anchor groups in accordance with ACI 318 (-19 and -14) <br />Chapter 17 or ACI 318-11 Appendix D, as applicable, is only valid for screw anchors with a thread length of at least 80 percent <br />of the nominal embedment depth. Anchors with a thread length less than 80 percent of the nominal embedment depth shall be <br />designed as single anchors. <br />