The difference in the reservoir level and the lowest point of the water mains is 180 m. The 

expected pressure due to water hammer is 7.5 kg/cm2

 in a pressure conduit of diameter 1 m. 

Assuming the efficiency of the riveted joints of the pipe as 0.6 and minimum cover 3 mm for 

corrosion, the thickness of the pipe materials, is 

(A) 10 mm 

(B) 15 mm 

(C) 20 mm 

(D) 25 mm 

1 Answer

Answer :

(C) 20 mm

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