Question

Calculate the hoop stress at the bottom of penstock, if a steel penstock of 1 m and 10 mm thick is subjected to 100m head of water. Take w = 9.81 kN/m³.

a.

49 N/mm²

b.

47 N/mm²

c.

45 N/mm²

d.

43 N/mm²

Answer: (a).49 N/mm²

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Q. Calculate the hoop stress at the bottom of penstock, if a steel penstock of 1 m and 10 mm thick is subjected to 100m head of water. Take w = 9.81 kN/m³.

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