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A Cast Iron Pipe Is Lifted by a Hoist 28MPa28 \mathrm { MPa }

Question 8

Multiple Choice

A cast iron pipe (L=12 m, weight density =72kN/m3,d2=100 mm, and d1=75 mm) \left( L = 12 \mathrm {~m} \text {, weight density } = 72 \mathrm { kN } / \mathrm { m } ^ { 3 } , d _ { 2 } = 100 \mathrm {~mm} \text {, and } d _ { 1 } = 75 \mathrm {~mm} \right) is lifted by a hoist. The lift points are 6 m apart. The maximum bending stress in the pipe is approximately:
 A cast iron pipe   \left( L = 12 \mathrm {~m} \text {, weight density } = 72 \mathrm { kN } / \mathrm { m } ^ { 3 } , d _ { 2 } = 100 \mathrm {~mm} \text {, and } d _ { 1 } = 75 \mathrm {~mm} \right)    is lifted by a hoist. The lift points are 6 m apart. The maximum bending stress in the pipe is approximately:    A)   28 \mathrm { MPa }  B)   33 \mathrm { MPa }  C)   47 \mathrm { MPa }  D)   59 \mathrm { MPa }


A) 28MPa28 \mathrm { MPa }
B) 33MPa33 \mathrm { MPa }
C) 47MPa47 \mathrm { MPa }
D) 59MPa59 \mathrm { MPa }

Correct Answer:

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