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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,RocPlane: ter:= 2.22-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 ( —24.42 ft <br /> cvsl ffup� <br /> Required tieback load: Tmax:= 4.5-klf Iterative to <br /> achieve FS <br /> per slope length <br /> (H—tcr) <br /> Area of sliding plane per linear foot: �,-= s.„r6fpl 1 =28.49 ft <br /> "'l <br /> Total resisting farce,Wyllie&Mah: 1 <br /> Fres:= c-A'+1Tmax sin((c fp+ 4)st)) + Fnorm.exis—Fvva1er]•tan(4)jt) =8.57-klf <br /> Total driving force,Wylie&Mah: Fdriving:= Fdr.exis—Tmax cos(Qfp + 0st) = 5.74-klf <br /> Fres <br /> Factor of safety: F5- Fdri - 1.5 <br /> V-ing <br /> Pattern vertical spacing: VSp:= 5•ft <br /> Pattern Horizontal spacing: Hsp:= 30.ft <br /> Required resisting force per anchor column: iTreq:= Tmax Hsp = I35 ki <br />