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Job No. 123116-000 Page 3 <br /> Client RMR Aggregates, Inc. Date 8/10/2023 <br /> Project Mid Continent Mine Designed By KRF <br /> Subject Active Slope Stabilization Checked By AC <br /> tension crack length,RocPlane: ter:= 5.3-ft <br /> Joint cohesion,KUE: AM SO psf <br /> Joint friction angle,KUE: fit:= 25-deg <br /> Anchor inclination: Ost:= 45•deg <br /> w <br /> Upper face length: Lup:= up =80.75 ft <br /> cos(6up) <br /> Required tieback load: Tmax 47-k1f Iterative to <br /> achieve FS <br /> per slope length <br /> _ (H—ter) <br /> Area of sliding plane per linear foot: ^AW* sin(6fp) —92.42 ft <br /> Total resisting force,Wyllie&Mah: <br /> Fres c'A+[TmaX sin((6fp+ Ost)) + Fnorm.exis —Fwater].tan(Oj) =73.29•k1f <br /> Total driving force,Wyllie&Mah: Fdriving Fdr.exis —Tmax-cos((Tfp + Ost) =52.01-k1f <br /> Fres <br /> Factor of safety: FS.— — 1.41 <br /> r <br /> driving <br /> Pattern vertical spacing: vsp := 10-ft <br /> Pattern Horizontal spacing: Hsp := 10-ft <br /> Required resisting force per anchor column: Treq Tmax Hsp =470-ki <br />