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ESR-3699 Page 15 of 18 <br /> <br /> <br /> <br /> <br /> <br />FIGURE 6—TAPCON+ SCREW ANCHOR LOCATED IN THE SOFFIT OF CONCRETE <br />OVER STEEL DECK FLOOR AND ROOF ASSEMBLIES <br />(1 inch = 25.4 mm) <br /> <br /> <br /> <br /> <br /> <br />TABLE 5—TAPCON+ SCREW ANCHOR DESIGN INFORMATION FOR ANCHORS LOCATED IN THE <br />SOFFIT OF CONCRETE OVER STEEL DECK FLOOR AND ROOF ASSEMBLIES1,2,3,4,5 <br />CHARACTERISTIC SYMBOL UNITS NOMINAL ANCHOR DIAMETER (inch) <br /> 1/2 <br />Location of installation — — Lower Flute Upper Flute <br />Minimum hole depth hhole in. 21/2 41/2 21/2 <br />Nominal embedment depth hnom in. 2 4 2 <br />Minimum effective embedment depth hef in. 1.32 3.02 1.32 <br />Characteristic pullout strength, <br />uncracked concrete over metal deck Np, deck,uncr lbf 1,720 4,950 2,405 <br />Characteristic pullout strength, cracked <br />concrete over metal deck Np, deck,cr lbf 975 2,805 1,360 <br />Characteristic shear strength, concrete <br />over metal deck Vsa, deck lbf 3,825 6,130 3,825 <br />Characteristic shear strength - seismic, <br />concrete over metal deck Vsa, deck,eq lbf 2,820 4,520 2,820 <br />Reduction factor for pullout strength in <br />tension  — 0.65 <br />Reduction factor for steel strength in <br />shear  — 0.60 <br />For SI: 1 inch = 25.4 mm, 1 ft-lbf = 1.356 N-m. <br />1Values for Np,dec,uncr, Np,dec,cr, Vsa,deck and Vsa,deck,eq apply to sand-lightweight concrete having a minimum concrete compressive <br />strength, f'c , of 3,000 psi. <br />2The characteristic pull-out strength for greater concrete compressive strengths shall be increased by multiplying the tabular <br />value by (f'c/3,000 psi)0.5. <br />3The strength reduction factor applies when the load combinations from the IBC or ACI 318 are used and the requirements of <br />ACI 318-19 17.5.3, ACI 318-14 17.3.3 or ACI 318-11 D.4.3, as applicable, are met. If the load combinations of ACI 318-11 <br />Appendix C are used, the appropriate strength reduction factor must be determined in accordance with ACI 318 -11 D.4.4. <br />4The minimum anchor spacing along the flute must be the greater of 3 hef or 1.5 times the flute width in accordance with Section <br />4.1.11 of this report. <br />5Installation must comply with Figure 6 of this report. <br />