A 1000 ft long steel pipe carries water from areservoir with a water elevation at 826ft. The pipe has a diameterof 12in. with a wall thickness of 0.5in. A gate valve at thedownstream end is slowly closed during a half a minute period.Determine the maximum water hammer pressure if the initial pressureat the valve was measured to be 742ft above datum. The elevation ofthe valve is 545ft. Will rate lifesaver.