With reference to Problem 29, develop an approximately equivalent bolting reinforcement system using one-inch diameter, Grade 60
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With reference to Problem 29, develop an approximately equivalent bolting reinforcement system using one-inch diameter, Grade 60 steel (60,000 psi elastic limit) bolts. Rock properties are: E = 4.9 million psi, v = 0.18, Co = 7,500 psi, To = 750psi,γ = 148pcf. Specify bolt spacing’s (in-row, between rows, ft) and bolt lengths (ft).
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