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Job No. 123116-000 Page 4 <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 /> Number of anchors in column: n:= 1 <br /> Required resisting force per anchor 1req_an Tn =30-ki <br /> TiebackAnchor <br /> Multi strand anchors,class 1 <br /> Bond strength in lower Limestone layer: BS:= 150-psi <br /> Factor of safety-pullout: FSpo:= 2 <br /> Anchor inclination from perpendicular to slope: Ost =45-deg <br /> Bar ultimate strength: 1t_s:= 79-kip 8 bar <br /> R61 Grade 73&Grade 80► ll-7 hr"d Rebar ASTM A615' <br /> Bar Mlnlmum Mlnlmum Grade 75 Grade 80 Approx. <br /> 6eslgnatlan N�ilvea 111tlrnata Minimum Mhlmum Nominal Thread Part <br /> Thru Yield Yield Weight Ma1or Number <br /> 8 Pitch Threads Strength Strength Stren th Diameter <br /> #E-5 0.44 in' 44 kips 33 kips 35 kips 1.5 Ibsrft 718" R61-0fi <br /> f 19 mm 294 mm) 196 kN 147 kN 156 kN 2A k rn 22 mm <br /> n7-5 0-60 in° 60 kips 45 kips 48 kips 2.0 Ibsfft 1' RBI-07 <br /> 22 mm 397 m kN 200 kN 214 kN 3.0 k rn 25 mm <br /> #8-3-112 0.79 in' 79 kipps 59 kips 63 kips 2.7 Ihsfft 1-118' R61-08 <br /> (25 mm) (510 mre') (351 kN) (264 kN) (280 kN} (3.9 k rn) (29 rnrn) <br /> #9-3.10 1-00 in' 100 kips 75 kips 80 kips 3-4 Ihs1R 1-V4" 1161-09 <br /> 29 mm 645 mrW 445 kN 334 kN 356 kN 5.1 kglrn 32 rnrn <br /> #10-3 1.27 in' 127 kips 95 kips 102 kips 4.3 Itis+h 1-3+8' RBI-10 <br /> (32 mm m 819 m ') (565 kN 424 kN) 454 kN 5.5 k m 35 mm <br /> 411-3 1.56 in' 156 k 117 k t 1-112' R61-11(36 mm) (1006mrr') (694 N (521 ki ) (555kss) 7.9 k srn) (38 rnrn) <br /> #14-3 225 in' 225 kips 169 kips 180 kips 7-65 Ihsfft 1-719" R61-14 <br /> 43 mm 1452 mrn' 1001 kN 750 kN 801 kN 11-8 k rn 48 rnrn <br /> #19-3 4.00 in' 400 kips 300 kips 320 kips 13.6 Ibsft 2-7116' R61 18 <br /> 57 mm m 2581 m ' 1780 kN 1335 kN 1423 kN) 19-6 rn 62 mm <br /> 4%20-2-314 4-91 in' 491 kipps 368 kips (39316.7 16.7 Ihsfft 2-314' R61-20 <br /> (64 mm) {3168 mrr') (2184 kNy (1637 kN) {1748 kN} (24.8 kg m (70 mm <br /> #24-2-314 6.82 in' 6B2 kips 612 kips 546 kips 24.0 Ibsft 3-T16" R61-24 <br /> 76 mm 4400 mm' 3034 kN 2277 kN 2429 kN) 35-8 kiym 81 mm <br /> n28-2-14 9-61 in' %1 kips 720 kips 769 kips 32.7 Ibsfft 3-314' R61-28 <br /> (89 mm)' 6200 mm' 4274 kN 3206 kN 3421 kN 48-6 k rn 95 rnrn <br /> #32-2_14 12-56 in' 1256 kipps 942 kips 1004 kippss 43.0 Ibsft 4-114' R51412 <br /> (102 mm)' (8103 mm) (5587 kti}1(4190 kN) (44%kN) (64-0 m} (108 MM) <br /> Free length,Fill: 1'fl:= 15-ft through upper <br /> limestone <br /> Required tail length: 1't:= 2-ft <br /> Hole diameter: dt:= 4-in <br />