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A <br /> Restrained Retaining Wall Calculations .Project: Robinett Residence <br /> ©Geoff Tapert,P.E.,2004,All Rights Reserved By: AGT I <br /> Date: 1/4/17 <br /> Design Assumptions <br /> fc= 3,000 psi F.S. <br /> fy= 60 ksi Bearing 1.52 <br /> Soil Bearing Capacity,S= 3,000 psf <br /> Equivalent Soil Pressure,g= 35 pcf Min.Cover= 1.5 in <br /> Soil Weight,w= 120 pcf di„bu)= 6.25 In <br /> Wall Width,b= 8 in <br /> Design d= 6.0 in <br /> Footing Depth,T= 8 in 4 <br /> Wall Height,H= 10.00 ft <br /> Total Footing Width,D= 16 in r``- <br /> P1= 1,500 lbs/ft _ _R, <br /> o in <br /> b A <br /> Fl=(h^2)*yJ2=W= 1,750 lbs <br /> Mmax=0.1283WH= 2,245 ft-lbs H W� <br /> R1=W/3= 583 lbs BIM <br /> A <br /> R2=2W/3= 1,167 lbs ccuc�"4r5 �� <br /> 1 AM <br /> ). n � 'K.. <br /> ■` 1,.5 in cir <br /> # 4 bar at 12 in O.C. <br /> # 4 bar at 16 in O.C. <br /> # 4 bar at 16 In O.C. <br /> Bearing Capacity 48 <br /> Min y per Soil Bearing Capacity ,,,� # 4 bar at 12 in 0.C. <br /> yb=S/((bH+DT)150+P1) 11 in " (If D>16"only) <br /> Reinforcement-Stem <br /> Mu= 1.4Ma= 3,143 ft-lbs <br /> Mn=Mu/0.9= 3,493 ft-lbs ];] + 1 1.7 ' bM <br /> f c _4(1) 1`Z , <br /> Ma=A,f,A,_0.425bff+0.85M„f,b`0 Ai - fr l fr <br /> 4 4,2f, 2 <br /> As= 0.119 sift <br /> Area of Steel,As(si/ft) <br /> _ 6 in O.C.I 8 in O.C.J 10 in O.C.I 12 in O.C.i 14 in 0.C.1 16 in O.C. <br /> #4 0.393 0.294 0.236 0.196 0.168 0.147 <br /> #5 0.613 0.460 0.368 0.307 0.263 0.230 <br /> #6 0.883 0.662 0.530 0.442 0.378 0.331 <br /> #7 1.202 0.902 0.721 0.601 0.515 0.451 <br /> #8 1.570 1.17$ 0.942 0.785 0.673 0.589 <br /> Use# 4 bear at 12 inn O, Vertical As= 0.196 ' si/ft ✓ <br /> Use# 4 bar at 16 in O.C. Horizontal <br />