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S / <br /> Objective <br /> Design Headed Stud anchors for flexural spacing <br /> Assumption: <br /> Vertical spacing, Sv:=1 ft <br /> Horizontal Spacing, Sh:=6 ft <br /> Concrete compressive strength, f'c :=4.5 ksi <br /> Yield strength of nelson stud, fy:=51 ksi Nelson stud mil steel <br /> concrete anchors <br /> 1. Shear loading on anchors, due to dead weight of concrete only, is <br /> negligible. <br /> 2. Loading roughly equivalent to either side. <br /> Calculations: <br /> Wall Height H:=24 ft <br /> Soil Pressure S:=40 pcf•H =960 psf <br /> Seismic Surcharge, Se =17.5•pcf• H =420 psf <br /> Surcharge, Su :=80 psf <br /> Total pressure, q„:_(S+Se + Su) = 1.46 ksf (From Geotech report ) <br /> Total Load, P q„•Sv•Sh =8.76 kip <br /> Steel Strength of Anchor in Tension: <br /> Number of anchors in a group, n :=1 <br /> Specified tensile streng of an anchor steel f„t,:=1.9•fy =96.9 ksi <br /> Effective cross Sectional area of an anchor Asn:= P„ =0.121 i n 2 <br /> 0.75•n •f„ta <br /> Diameter of stud, D:=\14• Asn =0.392 in <br />