What will be the thickness of metal required for a cast iron main 800 – McqOptions

MCQOPTIONS

1.	What will be the thickness of metal required for a cast iron main 800 mm in diameter for water at a pressure head of 100 m if the maximum permissible tensile stress is 20 MN/m2 and weight of water is 10 kN/m3.
A.	15 mm
B.	20 mm
C.	25 mm
D.	30 mm
Answer» C. 25 mm

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