Question

a seamless pipe of 600 mm diameter contains a fluid pressure of 3 N/mm². If permissible tensile stress is 120 N/mm², what will be the minimum thickness of the pipe?

• A. 7 mm
• B. 6.5 mm
• C. 8 mm
• D. 7.5 mm

Answer 1

Answer:

D. 7.5 mm

Given: $p = 3N / m m ^ 2$ $d = 600mm = 0.6m$ $f_{a} = 120 N / m m ^ 2$ t >=\frac {p d}{ 2 f_ a} \Rightarrow t>= \frac{3\times600}{ 2\times120} \Rightarrow t=7.5 mm