What should be the thickness of a cast iron pipe 45 cm diameter if it – McqOptions

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1.	What should be the thickness of a cast iron pipe 45 cm diameter if it is required to sustain 6 kg/sq cm inside pressure ? The maximum stress in the pipe material being limited to 140 kg/cm2
A.	12 mm
B.	10 mm
C.	7.5 mm
D.	5 mm
E.	15 mm
Answer» C.

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