With reference to Problem 4.32, develop an approximately equivalent bolting reinforcement system using one-inch diameter, Grade 60
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With reference to Problem 4.32, develop an approximately equivalent bolting reinforcement system using one-inch diameter, Grade 60 steel (410 MPa elastic limit) bolts. Rock properties are: E =33.8GPa, v = 0.18, Co = 51.7 MPa, To = 5.17Mpa, γ = 23.4kN/m3. Specify bolt spacing’s (in-row, between rows, m) and bolt lengths (m).
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Given Problem 32 data E338 GPa v018 Co517 MPa To 517 MPa y 234 kNm oy 410 MPa Oneinch diam...View the full answer
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