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Job No. 123116-DOO Page 3 <br /> Client RMR Aggregates,Inc. Date 11/27/2023 <br /> Project Mid Continent Mine Designed By KRF <br /> Subject Active Slope Stabilization Checked By BZ <br /> tension crack length,RocRlane: ter:= 4.57-ft <br /> Joint cohesion,KUE: := 40•psf <br /> Joint friction angle,KUE: it:— 25•de g <br /> Anchor inclination: �St:= 45-deg <br /> Iyup <br /> Upper face length: LUP cos( 44.02 ft <br /> ffup� <br /> Required tieback load: Tmax:= 20•klf Iterative to <br /> achieve FS <br /> per slope length ll <br /> �H—trrJ <br /> Area of sliding plane per linear foot: ,= =52.19 ft <br /> 4 fp� <br /> Total resisting farce,Wyllie&Mah:Fres:= c•A+1Tmax sin((c fp+ 4)stll11 <br /> + Fnorrn exis—Fvva1er]•tan(4)jt) =31.02•klf <br /> Total driving force,Wylie&Mah: Fdriving:= Fdr.exis—Tmax cos(Qfp + 4)st}=20.25•k1f <br /> Fres <br /> Factor of safety: FS- F - 1.5 <br /> driti-ing <br /> Pattern vertical spacing: VSp:= 10•ft <br /> Pattern Horizontal spacing: HSp:= 10•ft <br /> Required resisting force per anchor column: iTreq:= Tmax Hsp =200 ki <br />